Sears 358.356090-3.7/20" User manual

operator's
manual
Assembly
Maintenance
Repair Parts
MODEL NO, '_
358.356090-3.7/20"
358.356100-3.7/18"PS
i ....................
ii
Sears, Roebuck and Co., Chicago, IlL 60684 U.S,A.
66371-1-12084-2-17884 PRINTED IN U.S.A.

FULL ONE YEAR WARRANTY ON GASOLINE CHAIN SAW
(Excluding Bar, Chain, Spark Plug, Air Filter and Starter Rope) -
For one year from date of purchase, when you maintainl lubricate,'and tune up this chain saw according to the operating _:_
and maintenance instructions in the owner's manual, Sears will repair defects in material or workmanship in this gasoline
chain saw at no charge.
This warranty excJudes the bar, chain, spark plug, air filter, and starter rope which are expendable parts and become worn
during normal use.
If this chain saw is Used for Commercial or rental purposes, this warranty applies for only 30 days from date of purchase. WARRANTY
SERVICE ISAVAILABLE BY RETURNING THE CHAIN SAW TO THE NEAREST SEARS SERVICE CENTER INTHE UNITED STATES.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
Sears. Roebuck and Co.. Sears Tower. Dept. 698/731A. Chicago, IL 60684
TABLE OF CONTENTS
Specifications ............................... 2 Using the Power Sharp® System .............. 12
Safety Rules and Precautions ................. 3 Types of Cutting ............................ 14
..............................KnowYourChainSaw :T:-:: ::-::-: :-::::-:-:-::-_-:--:_ 5.....................-A.--BasicCutting-Te-Chriiq-u-e-.-TT:.-:.-:__T-:-_:._-_.-T:-1-4
A. Introduction ............................. 5 B. Tree Felling Techniques .................. 14
B. State and Local Ordinances ............... 5
C. Carton Contents .......................... 5
Preparing Your SaW For Use ..................... :6
A. Getting Ready ......... 6
B. Attaching the Hanclguard" : :: ::: ::_! ........ :6
C. Attaching the Spur ....................... 6
D. Attaching the Bar and Chain ................ 7
E. Chain Tension ............................ 8
F. -Engine Fuel Mixture ...................... 8
G, Bar and Chain Oil ........................ 9
Using Your Saw ............................ 10
A. Control Devices ......................... 10
B. Starting Instructions ..................... 10
C. Controlling Kickback ..................... 11
C. Bucking .................................. 16
D. Debranching and Pruning ............ -..... 17
Maintenance ............................... 18
A: Guide Bar and Chain .................... 18
B. Ignition, Cooling, and Exhaust Systems ...... 19
C. 'Starter Rope Repair and Replacement ...... 20
D. Clutch .and Drum/Sprocket ................ 21
E. Carburetor Adjustments .................. 22
F. Air Filter ............................... 23
G. Counter-Vibe ® Vibration System ........... 23
H. Storage ............................... 24
I. Maintenance Accessories ................. 24
J. Trouble Shooting Chart ................... 25
K. Maintenance Chart ...................... 26
Parts List .................................. 28
Quick Reference Page ....................... 35
SPECIFICATIONS
MODEL I 358.356090 (3.7/20") .
CU_IN. DISPLACEMENT '3.7 cu. in.160 cu. cm,
GUIDE BAR -':LO-KICK _20"SprocketNose
CHAIN " 3/8 Extendedr'Pitcli
....... _ Oregon'-*;Xtra*GUARD*-
',,r =_--_'" ,. -' : Chrome Cutters-7O Drive Links
SPARK PLUG
SPARK PLUG GAP
!GNITION
MODULE AIR GAP "
FUEL MIX
MUFFLER
OILER S¥STP-M '
FUEL TANK CAPACITY
OIL TANK CAPACITY
358.356100 (3,7118"P.S.),
3.7 cu. inl60 cu, ¢m,
18" Sprocket Nose "
318 Extended Pitch
Oregon ® Power Sha.rp ® :
Chrome Cutters-66 Drive Links ' " "
.... "Champion, CJ-BY
•, ,023 tO.027 .
'Solid State
,008 to .014
GasotinelOil Mixture 16:1
..... Spark Arresting Temperature Limiting
Automatic Manual
,19oz, 562 cu. cm.
12 oz. 355 cu. cm.
POWER SHARPADJUSTING
KNOB (MODEL358.356100)
AIRF,LTE. /_--HANDGUARD
COVER KNOBx /)_, . CHAIN
THROTTLE "_'_/'//i_...-'_r_ CHAIN TENSION
LO-KIc' GUIDEBAR
THROTTLt_ TRIGGER FRO_T CHAIN CATCHER = •
2
HANDGUARD
STARTER HANDLE
OIL
SPUR
OILER
THROTTLE DETENT
FUEL P REAR ;HAIN
. . '. CATCHER
SWITCH

t
SAFETY RULESAND PRECAUTIONS
:WARNING! :_:
Because a chain saw is a high-speed wood-cutting tool, special safety precautions
must be observed to reduce the risk of personal accidents. Careless or improper use
may cause serious injury.
A. KNOW YOUR SAW
1 Read your Owner's Manual carefully until you
completely understand and can follow all
safety rules and operating instructions before
attempting to operate the unit. :._i
:2. Restrict the use of your saw to adult users
who Understand and follow the safety rules,
....precautions, and operating instructions
B. PLAN AHEAD
Wear personal protective gear. At-
ways use steel-toed safety foot-
wear with nomsliP soles snug-
.......: fitting clothing :with reinforced
cutting resistant inserts; heavy-duty non'slip
, gloves; appropriate eye protection such as non-
fogging; vented goggles or face screen; an ap-
: ::proved safety hardhat, and sound barriers I ear
- =.plugs or mufflers to protect your: hearing. Regular
users should have hearing _hecked regularly, as
:"chain saw noisemay damage hearing. '"
' 2. Keepchildren, bystanders, and pets out of the
....work area.:Do not allow other people tobe near
::'the chain saw when starting or operating'the chain
saw_:
3. Do not handle or operate achain saw when you
are fatigued, ill, or upset; or if you havetaken
.i :alcohol, drugs or medication. You must be in
good physical conditionand mentally aiert. Chain
saw work is strenuous. If you have any condition
that might be aggravated by strenuous work,
check with your doctor before operating achain
saw.
4. Do not attempt to use your saw during bad
weather conditions such as strong wind, rain,
snow, etc., or during darkness.
5. Plan your sawing operations carefully in ad-
vance. DO not start cutting until you have a ctear
' iw0rkarea, secure footing, and if you are felling
• trees, a planned retreat path. :
GUARD AGAINST KICKBACK ..... ,
Cw
To reduce the hazard of kickback:
1. Hold the saw firmly with both hands. Left hand
on front handle barl right hand on rear handle
whether you are right-handed or left-handed.
Never use the saw with one hand .......
2. Do not overreach.
3. Do not let the tip of theguide bat contact the
ground, another log, branch, Or any other
obstruction.
5. Cut one log atatime.
6. Use extreme caution when. re-entering a pre-
vious cut.
.7. Donot attempt plunge cuts .....
8. Watch for shifting logs' or other forces that
could close a cut and pinch the chain.
9. DOnot cut above shoulder height.
10. Follow manufacturer's chain sharpening
and maintenance instructions. Keep the
chain properly tensioned. Check tension at reg-
ular intervals with the engine stopped, never
,,, with the engine, running,-Make: Sure the bar
clamp nuts are secure!y:tightened after !ension-
,, .ingthe chaio.. :.,_ .
11. _Use. the Guard Link. Chain and.. Lo-Kick®
Guide Bar designed foryour saw to reduce the
hazard of kickback. .......... -
D. AVOID REACTIVE FORCES _.
Pushback and Pull-in occur when the chain is
suddenly stopped by being pinched, caught, or
by :contacting a foreign object in thewood. This
results in areversal of the chain force used to cut
wood and causes the saw tomove inthe opposite di-
•rection Of chain rotation, resulting in loss of control
and possible serious personal injury.
To avoid Pushback:
1. Be extremely aware of situations or obstruc-
tions that may cause material to pinch the top of
or otherwise stop the chain.
: 2. Do not cut morethan one log at a time.
3. Do not twist the saw as the bar iswithdrawn
_ from an under-cut when bucking.
To avoid Pull-In: •
Kickback can lead to dangerous loss of control of
the saw and possiblY cause serious personal in- 1.
jury. Kickback isthe upwardand backward motion of
the guide bar that occurswhen the movingchain con- 2.
tacts an object atthe tip oftheguide bar.
Always begin cutting with the engine at full
throttle and the spike against the wood.
Use wedges made of plastic, wood, or light
alloy (never of steel or iron) to hold the cut
open.

E. HANDLE FUEL WITH CAUTION ....
1. Eliminate all sources of sparks or flame in the
areas where fuel is mixed, poured, or stored.
There should beno smoking,open ftames, or work
that could cause sparks:
2. Mix, pour and store fuel in a well-ventilated
area, on bare ground, and in an approved,
marked container.
3. Wipe up all spilled fuel before starting your
saw.
4. Move at least 10 feet (3 meters) away from fuel
and fueling site before starting the engine.
5 Do not smoke while handling fuel or while
operating the saw.
6. Turn the engine off and let your saw cool be-
fore removing the fuel tank cap and refueling
the unit.
G, MAINTAIN YOUR SAW :IN GOOD
WORKING ORDER
1. Have all chain saw service performed by your
authorized service dealer center, otherthan the
items listed in the maintenance section of this
manual.
2. Keep fuel and oil caps, screws and fasteners
securelytightened.
3. Keep the handles dry, clean, and free of oil or
fuel mixture.
4. Make certain the saw chain stops moving
when the throttle trigger is released. If it does
not, refer topage 22 for correctcarburetor idle ad-
justment instructions.
5. Stop the saw if the chain strikes aforeign ob-
ject. Inspectthe unitand repair or replace parts as
necessary.
F. OPERATE YOUR SAW SAFELY
1. Do not operate a chain saw that is damaged,
improperly adjusted, or not completely and
securely assembled.
2. Do not operate the saw from a ladder or in a
•tree,
3. Position all parts of your body away to the side
of the saw chain protrudingto the leftofcutwhen
the engine is running.
4. Cut wood Only. Do not use to pry or shove away
limbs, roots or other objects.
5. Make sure the chain will not make contact be-
fore starting the engine. Never try to start the
saw when the guide bar is in aCutor kerr.
6. Use extreme caution when cutting small size
brush and saplings. Slender materialmay catch
the saw chain and be whipped toward you or pull
you off balance.
7. Be alert for springback when cutting alimb that
is under tension so you will not be struck by the
limb or saw when the tension in the wood fibers is
released.
8. Do not put pressure on the saw at the end of
a cut. This could cause you tolose control when
the cut is completed.
9. Stopthe engine before setting the saw down.
7.
ments.
Never modify your saw in any way. Use Only
attachments supplied or specifically recom-
mended by Sears.
H. CARRY AND YOUR SAW
SAFELY
1. Hand carry the unit with the engine stopped,
the Muffler away from your body, and the Guide
Bar and Chain tothe rearcowered preferably with
ascabbard,
2. Before transporting in anyvehicle or storing in
any enclosure, allow your saw to cool com-
pletely, cover the bar and chainand properly se-
cureto avoidturnover, fuel spillageor damage.
3. Drain oil and fuel tank before storing for more
than 30 days.
4. Store ina dry area out of the reach of children
and away from where fuel vapors can reach an
open flame from hotwater heaters, furnaces, etc.
Exposure to vibrations through prolonged use of chain saws may produce Whitefinger disease (Raynaud's
phenomenon). This phenomenon reduces the hand's ability to feel and regulate temperature, produces
numbness and burning sensations and may cause nerve and circulation damage and tissue necrosis. An
anti-vibration system designed to reduce engine vibration is available on many Sears models and is
recommended for those using chain saws on a regular or sustained basis.
An anti-vibration system does not guarantee the avoidance of Whitefinger disease, Continual and regular
users should monitor closely their use of chain saws and physical condition.
4

KNOW YOUR CHAIN SAW
A. INTRODUCTION
The information found in this manual will help
you properly prepare your chain saw for use,
understand how to operate your saw safely, and
perform maintenance required to keep your unit
ingo0d working condition.
Your saw has beendesigned with safety in mind
and includes the following safety features as
standard equipment:
Spark Arrestor
B. STATE AND LOCAL ORDINANCE
REQUIREMENTS
Your saw is equipped with a temperature
limiting muffler and spark arresting screen
which meets the requirements of California
Codes 4442 and 4443. All U.S. forest land and the
states of California, Maine, Washington and
Oregon require many internal combustion
engines to be equipped with a spark arrestor
screen and a temperature limiting muffler by
law.
if you operate a chain saw in a state or locale
...................................Handguards where-such-regulationsexist;youarelegallyre; -
Counter-Vibe ®Vibration System sponsible for maintaining the operating condi-
Lo-Kick® Guide Bar
Guard Link Chain
The chain saw should never be operated unless
these devices are properly installed on the unit.
The Lo-Kick® Guide Bar and Guard Link Chain have
......:been designed to reducethe hazard ofkickback. You
should thoroughly read and understand the section,
"Controlling Kickback"on page 11.
Cm
tion of these parts;Failure to do so could subject
you to liability or to a fine. Muffler and spark arres-
tor maintenance isfound on page 19.
CARTON CONTENTS
After you unpack the carton:
1. Check the contents against the list below.
2. Examine the items for damage.
3. Notify your Sears Store immediately if a part
is missing or damaged ....
KEY NO. CARTON CONTENTS: QTY.
1
2
3
m4
5
6
7
8
9
10
Power Head
Guide Bar
8 oz. can, 2-Cycle Engine Oil
Loose Parts Bag (not shown)
LOOSE PARTS BAG coNTENTS:
Operator's Manual (not shown)
Handguard
Cap-Handguard
Screws-Handguard
Spur
Screw-Spur
Chain
Scrench
1
1
1
1
1
1
1
3
1
2
1
1
H

PREPARING YOUR SAW FOR USE
A. GEEING READY
1. READ YOUR 0PERATOWS MANUAL
CAREFULLY'" .....
._......Your Operators; Manual has been developed to
i _ help you,prepare your saw for use and to under-
• Stand its safe operation. It is;important that you
read your manual completely to become familiar
with the unitbeforeyou beginassembly.
•, ,, H,,
B. ATTACHINGTHE HANDGUARD
The Handguard is a protective device designed
to hetp prevent your hand from coming in con-
tact with the cutting chain should your hand slip
off the handlebar, tt will not:eliminate the
possibility of injury from kickback or toss of con-
_trol of.the saw. .........
2. HAVE THE FOLLOWING AVAILABLE:
a. Protective gloves _-.....'
b; Approved, marked fuel container
c. One gallon leaded or unleaded, regular
gasoline • • : _ :_'
d. Bar and Chain Lubricant (see page 9).
e. Scrench--provided with your unit. No other
.tool is necessary for assembly. The long
end of the too! can be used as a slotted
screwdriver. The small PiPe end canbe us-
WARNING! .......
Do not use the saw without the handguard in
place. ,
• Lift and carry the chain saw by the handlebar
or rear handle, not by the handguard.
• Keep the handguard securely fastened at all
times. Check the handguard screws each
time the saw is used. ....
CAP HANDGUARD HANDLE
.... : :i:"::-iFigure 1 :_ ?_ _
C. ATTACHING THE SPUR
The spur is a special piece,of equipment de-
signed to assist the cutting operation. When
assembled to the saw, the spur. will dig into the
tree or log and: _i ....
--relieve contact pressure adding"ease to the
sawing operation.
--allow the saw to be more easily rotated or
pivoted into the cut.
To install:
1. Alignthe Handguard and Handguard Cap
around the handlebar as shownin Figure 1.
2. Fit the imounting pin on the Handguard into
the hole in the handlebar. Figure 1.
3. Insert the 3 mounting screws into the 3 holes
on the Handguard Cap.
4. Turn .each screw a little at a time clockwise,
until the Handguard Cap and Handguard
meet and there is no gap between the two
parts.
BAR
CLAMP. (
BAR NUTS
GUIDE BAR PLATES
Figure 2
To Install:
1. Remove Bar Clamp Nuts, Bar Clamp and
Guide Bar Plates.
2. Align the spur over the two holes on the bar
clamp side of the saw. Figure 2.
3. Insert the two screws and tighten evenly and
securely.
i,,i

D. ATTACHING THE BAR AND CHAIN
_ICAUTION:!Wear protective gloves when han.
dling or operating your saw. The chain is sharp
and can cut you even when it isnot moving!
• Your saw is equipped with a Lo-Kick ®Guide
Bar and a Guard Link Chain designed to help
reduce kickback.
• Always use the Lo-Kick _Guide Bar and the
Guard Link Chain specified for your chain
saw model, when replacing these parts.
WARNING_
WARNING! /!'
Never try to install the bar upside down to avoid in-
creasing the hazard of kickback.
c. Hold chain with cutters facing as shown in
Figure 6.
d. Place chain over and behind the clutch
drum onto the sprocket,
e. Slide Guide Bar to the rear of the saw as far
as possible.
f, Fit the bottom of the drive links between
the teeth in the sprocket.
g. Start at the top of the bar and fit the chain
drive links into the around the Guide
groove
-Bar. Figure 6. '
Do not start engine without guide bar and chain I h. Pull the Guide Bar forward until the chain is
completely assembled. Otherwise the clutch I snug in the guide bar groove Figure 7.
can come off and serious personal injury could / i Install the outer guide plate "Figure3
..................................result: .............................:.................................................................:...........................................................................................J_..................................................... by.__J_id_Lng....t.h'e_bar.........................
a. Install the Inner:Guide Plate over the bar
....... mounting studs. Figure 3,
NOTE: Be sure the Inner Guide Plate curves
or flanges toward the saw frame away from
the Guide Bar. Figure 4.
b. Mount the Guide Bar with the slotted end
over the bar mounting studs. Figure 5.
NOTE: Be sure the Guide Bar is positioned
with the round hole below the large slot.
INNER GUIDE
PLATE
Figure 3
Figure 4 c u'c"1
:-;1 ,
Figure 5
clamp over the mounting studs arid fitting
.the baradjusting pin into the round.hole
in the Guide Bar. Figure 8.
k. Replace the Bar Mounting Nuts and tighten
finger tight only.
NOTE: The Bar Clamp nuts must be slightly
loose to tension the chain correctly,
I, Follow "Chain Tension, •instructions,
page 8.
Figure 6
ADJUSTING PIN HOLE
Figure 7
BAR ADJUSTING PIN
6 6
Figure 8 7

E. CHAIN TENSION
•COrrect chain tension is very important:
--a loose chain will wear the bar and itself,
--a loose chain can jump off the bar while
you are cutting.
--a tight chain can damage the saw and/or
break,
•Chain tension is correct when the chain:
--can be lifted about 1/8" from the Guide Bar
at a point near the middle of the bar, and
•--will move freely around the bar.
•The chain stretches during use, especially
when new. Check tension:
:-- each time the saw isused
w more frequently when the chainisnew
Jas the chain warms upto normal operatingtem-
perature
•The Bar Clamp Nuts must be slightly loose to
tension the chain correctly.
1. Hold the tip of the Guide Bar up and turn the
Adjusting Screw. just until the,chain does not
sag beneath the Guide Bar, Figureg.
'NOTE: Turn screw clockwise to tighten ten-
sion; Turn screw counterclockwise to loosen
tension .....
2. Check the tension by lifting the chain from
the Guide Bar at the center of the bar. Figure
'i0.
F' U'XTURE:
• Your chain saw is powered by a two-cycle
engine which requres a fuel mixture of regu-
_lar gasoline anda high quality engine oil spe-
cially made for 2-cycle, air-cooled engines.
The internal design of the 2-cycle engine re-
quires lubrication of moving parts. Lubrica-
tion is provided when you use the recom-
...... mended mixtureof gasoline and oil, .
• Gasoline must be iclean and not over two
months old. After :a sl_ort period of itime,
3. Continue turning the Adjusting Screw until
the tension is correct. _ .
4, Hold the tip of the Guide Bar up and tighten
the Bar Clamp Nuts with the Scrench.
5, Recheck tension.
CHAIN CAN BE
LIFTED 1/8"" WHEN
TENSION IS
CORRECT.
TURN
TO LOOSEN
TENSION
TURN
TO TIGHTEN
TENSION
: gasoline ,begins to chemically 'break down
and will form compounds that can cause hard
starting and damage in 2-cycle engines.
;•The correct measure of gasoline to oil is very
: important.
:_ --Too much oil in the mixture will =fou! the
........ Spark plug.
........... --Too little oil will cause the engine to over-
heat resulting in damage,
• Mix the fuel thoroughly in a container since
gasoline and oil do not readilycombine. Do not
try to mix fuel directly in the fuel tank.
Figure 9
o
Figure 10
1. USE THE FOLLOWING FUEL MIXTURES:
2. DO NOT USE:
• BIA Oil (Boating Institute of America)
--Does not have proper additives for air-
cooled, 2-cycle engines and could cause
damage.
•AUTOMOTIVE OIL-
- Does not have proper additivesfor 2-cycle
engines and couldcause damage.
•GASOLINE CONTAINING ALCOHOL-
(High Test, Premium or Gasohol)
Stiffens criticalcarburetor fuel metering ele-
ments and causes engine damage from
overheating.
Increases vaporlock.
mAttractswater causing corrosiondamage.

3. HOW TO MIX FUEL
a. Pour one-half of the gasoline into an ap-
proved, marked container. Do not try to mix
oil and gasoline directly in the fue! tank.
b. Add entire measure of 2*cycle Engine Oil.
c. Mix.
d. Add remainder of gasoline.
e. Mix thoroughly for one minute.
Figure 11
4. IMPORTANT POINTS
ao Eliminate all sources of sparks or flame in
the areas where fuel is mixed, poured, or
stored. There should be no smoking, open
flames or work that could cause sparks.
b. Mix, pour and store fuel in an approved,
marked, container and in awell-ventilated
area. Gasoline vapors are harmful to your
health and are a serious fire hazard. Use a fun-
nel or spout when pouring fuel.
c. Avoid overfilling the fuel tank. Allow3/4 inch
for ex pansion. Tighten Fuel Cap securely. Fig-
ure 11.
d. Wipe up all fuel spills. Wipe off any fuel spil-
led on the saw. Completely dry the saw before
using.
e. Move at least 10 feet (3 meters) away from
fueland fueling site before starUng the en-
gine.
G. BAR AND CHAIN OIL
1. USE THE FOLLOWING:
30°F or above Lubricant -- undiluted.
30°F - 0° F --
• The guide bar and cutting chain require con.
tinuous lubrication in order to remain in
operating condition. Lubrication is provided
by the automatic oiler system when the oil
tank is kept filled,
--Lack of oil will quickly ruin the bar and
chain.
--Too little oil will cause overheating shown
by smoke coming from the chain and/or
discoloration of the guide bar rails.
• Use Sears Bar and Chain Lubricant #71-36554
or clean SAE 30W oil.
In freezing weather oil will thicken, making it
necessary to thin bar and chain oil with a
small amount of Diesel Fuel #1 or Kerosene.
Bar and chain oil must be free flowing for the
oil system to pump enough oil .for adequate
lubrication.
FILLTHE
TANK EACH
THE FUEL TANK
IS FILLED
Figure 12
Below 0°F
95% lubricant to 5% Diesel
Fuel #1 or Kerosene.
90% lubricant to 10%
Diesel Fuel #1 or Kerosene.
3. IMPORTANT POINTS TO REMEMBER
b.
C.
a. Fill the oil tank each time you refill the fuel
tank to ensure there wilt be sufficient oi! for
the chain whenever you start and run the
saw.
The saw will use about 112 tank of chain oil
for each tank of fuel mixture. If tess oil is
used, check for a plugged oil hole in the
guide bar. ; •
It is normal for a small amount of oil to ap-
pear under the saw after the engine stops.
This is due to oil draining from the bar and
chain when not in use.
9
a. Stop the engine.
b. Turn saw on its side with oil cap up. Figure
12.
c. Loosen cap slowly and wait for pressure in
the tank to be released before removing the
cap.
d. Fill the oil tank.
e. Replace the oil cap securely.
2. HOW TO FILL THE OIL TANK

USING YOUR SAW .... i
i
A. CONTROL DEVICES
Understanding the control devices on your saw
is an important part of learning how to properly
and safely operate the unit. Figure 13. _
1: The ignition Switch is a!oggte switch which
is moved up for the "Start" position and mov-
ed down for the' "Stop" i_osition.
2. The two-position Choke helps to start the
saw by controlling the air flow to the fuel
system.
3. The Trigger accelerates and controls the
speed of the engine and is designed to be
used with the Throttle Lock.
THROTTLE
DETENT
BUTTON
bKE
ROTTLE
LOCKOUT
STARTtSTO
SWITCH TRIGGER
OILER
START
: STARTtSTOP
SWITCH
HALF OFF
prevents the Trigger from becoming accident-
ly engaged. The Throttle Lock must be press-
ed before the Trigger can be activated.
5;The Throttle Detent Button holds the Throttle
Lock and Trigger in position while the engine
is being started. Release the Throttle Detent
Button after the engine is started by lightly
squeezing the trigger.
your right thumb. Use the manual oiler to SUp- _.
plemeht the automatic Oiler:
--during a long felling cut
--when cutting into a tog or tree which is
greater in diameter than the tength0f the
guide bar.
_--anytime an additional supply of oil is de-
sired.
B. STARTING INSTRUCTIONS
1. IMPORTANT POINTS
a. Push down onthe throttle lockout, squeeze
the trigger, press and hold down the throt-
tle detent button, then slowly release the
trigger.
b. Engage choke according to "Starting In-
structions" below.
c. Hold saw firmly with the saw chain free to
turn without contacting any object. Figure
14.
d. Pull starter rope quickly, using no more
than 15-18 inches of rope per pull. Using the
full length of the starter,rope may cause it to
break, Do not let the starter rope snap back.
Hold the handle and letthe rope rewindslowly.
e. Release the throttle detent button after en-
gine starts, allowing the engine to idle. The
chain must not move when the engine runs at
idle speed, if correction is required_' refer to
CarburetorAdjustments, page 22.
f. Stop engine by moving the ignition switch
to the "STOP" position (Figure 13).:
WARNING_ --
Always wear gloves; safety footwear; snug-
fitting clothing; and appropriate eye, hearing,
and head protection devices when operating a
chain saw.
TO START -- HOLD FRONT HANDLE-
BAR AND PLACE RIGHT
FOOT THROUGH HANDLE.
Figure 14
WARNING.!
Avoid bodily contact with the muffler when starting
a warm engine. The muffler can become very hot
and can cause serious burns.
MM ign_. P.#chokeknob
2. STARTING PROCEDURE ,wMcbtDstilrtt01ullctmke
a. Cold Engine x: x
.... b. Warm Engine x c,okeo,
•C; Refueled:Engine after running X: x
out of gas
Prezsthrottle Press thmlge Pui_ruder rope I_sh _oke kilOb PtlITstarterrope Squeezet_gger
I_k =nd detent bMton untUsngLnefires in UL_Ier_ns ruIts to relOllSe
squu_ tdgger r_asa bigger _detent
X X 3-5 times X X X
%2 times X
X 3-5 times X XX
d. Flooded Engine xcho,eo, × x xx
e. Cold Weather starting xxxx_ t_m=s ,a_c,oke" x x
___ {out of cut)
* Allow engine to warm-up thoroughly on half-choke, then move choke to the "Off" position. Do not cut with the
choke at the "On" or "Half" position. Figure 13.
10

C. CONTROLLING KICKBACK ........
Kickback isa dangerous reaction thatcancause
serious personal injury. Carefully study this man-
ual before you make the first cut with your new
saw. "Youmust understand what causes kickback,
.how you can reduce the chance of kickback, and how
:you can remain in the best control of the saw if
kickback does occur.
1. _WHAT CAUSES KICKBACK :
Kickback can occur when the moving chain
- __contacts an object at the tip or nose of the
guide bar. This contact causes the chain to dig
_-_.into the object and stops the chain for an instant.
The result is a lightning fast, reverse reaction
which kicks the saw tip up and back toward the
operator. The operator can lose control of the saw
and the cutting chain can cause serious personal
injury if it contacts any part of the body.
Figure 15
AVOID OBSTRUCTIONS
CLEAR WORKING AREA
Figure 16
;b
THUMB ON RM
UNDERSIDE _ ,_/,
OAFRANDLE_ _,Y,_#jSTRAIGHT
NEVER
_EVERSE
Figure 17 .....................
2. REDUCETHE CHANCE OF : :,:
KICKBACK
a. Recognize that kickback can happen. By
understanding and knowing about kickback,
you are better equipped to deal with an occur-
rence.
b. Never let the moving chain contact any ob-
ject at the tip ofthe guide bar. Figure 15.
c. Keep the working area free from obstruc-
tions such as other trees, branches, rocks,
fences, stumps, etc. Figure 16. Eliminate or
avoid any obstruction that your saw chain
could hit while you are cutting through apar-
ticular log orbranch.
d. Keep your saw chain sharp and properly
tensioned. A loose ordull chaincan increase
the chance of kickbackl
e. Begin and continue cutting at full throttle.
Ifthe chain is moving_ataslower-speedTthere ..........................!
isgreater chance for kickback tooccur.
f. Cut one log at a time.
g. Use extreme caution when re-entering a
previous cut.
h. Do not attempt plunge cuts.
i. Watch for shifting logs or other forces that
could close a cut and pinch or fall into the
chain.
j. Use the Lo-Kick_Guide Bar and Guard Link
Chain specified for your particular saw.
These devices have.been_designed to reduce
the hazard of kickback: ""
k. Use extra caution if your saw is equipped
with the Power Sharp-" System. The Power
Sharp '_saw is equipped with a Lo-Kick =.Guide
Bar and a Guard Link Chain. However, due to
the chain requirements of the built-in sharpen-
.ing mechanism, the kickback force from the
Power Sharp'" chain may be greater than that
from other Guard Link chains.
3. MAINTAIN THE BEST CONTROL
a. Keep a good firm grip on the saw with both
hands. Figure 117.Afirm grip can neutralize
kickback and help you maintain controlofthe
saw. Keep the fingers ofyour lefthandencirc-
ling and your left thumb under the front han-
dlebar. Keep your right hand completely
around the rear handle whether you are right
:handed or/eft handed. Keep your left arm
straight with theelbow locked.
b. Position your left hand on the front han-
dlebar so it is in a straight line with your
right hand on the rear handle. Figure 17.
Never reverse rightand lefthand position.
c. Stand with your weight evenly balanced on
both feet.
d. Stand slightly to the left side of the saw, to
keep your body from being in a direct line
with the cutting chain; Figure 17.
e. Do not overreach. You could be drawn or
thrown offbatance and lose controlofthesaw.
f. Do not cut above shoulder height. It isdiffi-
cult to maintain control of the saw above
shoulder height. 11

USING THE POWER SHARP®SYSTEM (MODEL 358.356100)
, , , , ,,
• Model 358.356100 is equipped with a Power Sharp ®
:System that will perform approximately 80% of the
sharpening necessary for the saw chain. The Power
Sharp® System uses a built-in grinding stone to shar-
pen the cutter top plates and set depth gauges. As
: the built-in sharpener is used, the cutter side plates
.gradually will be altered. Hand filing is required to
correct the cutter side plates.
• Sharpen the saw chain when:
--wood chips become small and powdery.
Wood chips made by the chain should be
about the size of the teeth of the chain.
• Always replace the sharpening stone when
--sparks are no longer seen at full adjust.
ment
--only 1/4 inch of stone is remaining
--stone hasbecome cracked or damaged.
--a new chain is installed. The used stone
wilt be worn to the shape of::the old chain
and can cause excessive wear to a new
chain. Replacement chain comessupplied
with Stone Cartridge Replacement #69099.
Refer to replacement instructions on page
13.
--saw has to be forced through the cut.
JCAUTION:J ALways wear gloves when handling
the chain. The chain can be sharp enough to cut
you, even when it is too dull to cut wood.
ventional chain is substituted for the Power
Sharp'_. Chain. _See instructionsfor removing the
Stone Cartridge on page 13. Use replacement
chain #71-3638. Follow chainsharpening instruc-
tions onpage 18.
A, AUTOMATIC SHARPENING
1. Stop the engine:
.... 2. Place the saw 'on a solid, flat surface and
make sure that the chain will not contact
any object.
3. Adjust the chain with correct tension. Refer to
Chain Tension page8.
: 'IMPORTANT: The chain must be tensioned
correctly for proper sharpening to occur.
4. Start the engine and operate at half to three/
quarters throttle during steps "5", "6", "7",
and "8".
NOTE: Saw must be running at half to three/
quarters throttle before knob is pressed.
_: 5:Push the Power Sharp ® i Kn0bdown slowly
: Untit fully pressed down. Figure19.
NOTE:If stone should contact chain before
knob is fully pressed down, release knob
and turn knob counterclockwise until condi-
tion does not exist. Repeat :Step "5" again.
6. Turn knob slowly clockwise until sparks can
be seen as shown in Figure 19.
NOTE: Pro per sharPePing occurs when a light
flow of sparks is seen: Im proper sharpening is
shown by a heavy flowof sparks or no sparks.
7. Release knob and turn one additional "click"
clockwise.
NOTE: It is important to turn the knob only
one "click" each time the knob is pressed.
More turnswilt result in making the chain dull
instead of sharp.
8. Press knob firmly against chain and hold for
10-15 seconds or until sparks can no longer
be seen.
9.. Reteaseknoband stop the engine.
10. Inspect chaincutters.
NOTE: A properly sharpened cutter will show
grinding marks across its entire width. Figure
20. If cutters do not appear sharp or burrs are
seen on the top front of the cutters, repeat
Steps "7" and "8".
SPARKS ARE SEEN HERE
POWER SHARP®KNOB
i Figure i9
:INSPECT CUTTERS FOR GRINDING MARKS
TOP VIEW OF CUTTER
Figure 20
12

B. HAND FILING
Sharpen the side ptates by hand after every 3rd
to 5th time the Power Sharp® System is used.
items Required:
Gloves flat file
5/32" file vise
file holder
NOTE: If abrasive materials such as rocks, nails,
sand or dirt are contacted by the chain, the side
plates should be checked more often. Damage
to the cutters caused by. abrasive materials
usually results in discoloration, spots where the
chrome has been worn away. Cutter side plates
should be filed until these spots are removed.
.: 1. Stop the engine.
2. Adjust the chain for proper tension ,page 8.
3. Clamp the bar in a vise to-hold the chain
steady. Do not clamp the,chain.
NOTE:Work.at the midpoint of the bar, mov-
.. ingTthe chain forward with a screwdriver as
each cutter is filed,:.
FLAT SIDE "
OF FILE HOLDER
ON TOP OF CUTTER Topic
HOLD FILE
HOLDER LEVEL 22°
4, Support the square rod on the file holder (with
5/32" round file)on cutter top plate. Figure 21.
.... ,
WITH THE 22°
GUIDE MARK
PARALLEL TO.
GUIDE BAR
5. Hold the file holder level with the 22 ° guide
• mark parallel to guide bar. Figure 22.
-6. File from inside toward outside of cutter in
one direction only -- 2 or 3 strokes per side
plate edge should be enough. Figure 23.
NOTE: Avoid hitting the top edge of the cut-
ters when filing the side plate.
7. Maintain a 1132" side plate projection. Figure
• 24. _
File all side plates on one side of the chain,
then move to the other side of bar and file re-
maining side plates.
C. REPLACE OR REMOVE THE
: 1.
2.
3
4.
STONE ANDCARRIER ASSEMBLY
Remove Carburetor Cover and Bar Clamp.
Remove the; two:screws which hold cartridge
assembly to crankcase. Figure 25.
Discard old assembly.
Install new cartridge assembly.
NOTE: Be careful not to tet the Slide Button
fall out.
:5. Reinstall Carburetor Cover and Bar Clamp.
ND FILE
_'_,k-.,_ DEPTH
PLATE _AUGE
SIDE PLATE
Figure 21
Figure 22
rFigure23
SIDE
PLATE l i
I o
TOP /_- 22
PLATE /
TOP VIEW
OF CUTTER
I
SIDE PLATE
PROJECTION_
1132"
MAXIMUM
Figure 24 .........
STONE .....
CARTRIDGE
ASSEMBLY
13

TYPES OF CUTTING .....
Ae BASIC CUTTING TECHNIQUE
1. IMPORTANT POINTS.
•a. Cut wood only. Do not cut metal, plastics,
masonry, non-wood, building materials;etc.
b. Stop the saw if the chain strikes aforeign
object. Inspect the unit and repair or replace
parts as necessary.
c. Keep the chain out of dirt and sand. Even a
small amount of dirt will quickly dull a_Chain and
thus, increase the possibility of kickback.
2. UNDERSTAND REACTIVE FORCES
Pushback and Pull-in occur when the chain is
suddenly stopped by being pinched, caught,
m
Toavoid Pull-in:
a. Always begin cutting with the engine at full
throttle and the spike against the wood.
b: Use wedges made of plastic, wood, or light
alloy (never of steel or iron) to hold the cut
open.
PROCEDURE
Practice cutting a few smalt logs using the follow-
ing technique to get the '_eel" of using your saw
before you begin a major sawing operation.
a. Accelerate the engine to full throttle just be-
fore entering the cut by squeezing the Throt-
tleTrigger.
...........................................o.r..by.#ontactinga, fore!gn.obje_ in_the_wood__...........................),....Begin cutting with the spur against the log.
This results in a reversal of the chain force used Figure 26,
to cut wood and causes the saw to move inthe op-
posite direction of chain rotation, resulting in loss
of control and possible serious personal injury.:'.
'e Pushback:
--occurs when the chain on top of the bar, is sud-
deftly stopped When the top of the bar is used for
cutting.
.... drives the saw straigl_t back toward the operator,
poss!bly causingloss of saw control.
To avoid Pushback:
a. Be extremely aware of situations or
obstructions that may cause material to stop
or pinchthe top ofthe chain.
....b. Do not cut more than one log at atime.
c. Do not twist the saw as the bar is withdrawn
=" from an under-cut_
c. Keep the engine at full throttle the entire
time you are cutting.
d. Allow the chain to Cutforyou; exert onlylight
downward pressure. If you force the cut, dam-
age tothe bar, chain oreng_ne can result.
e. Release the throttle trigger as soon as the
cut is completed, allowing the engine to idle.
If you run the saw at full throttle without a cut-
ting load, unnecessary wear can occur to the
chain, bar, and engine.
f. Do not put pressure oh the saw at the end
of the cut to avoid Iosing controlwhen the cut
iscomplete.
g. Stop the engine before setting the saw
down after cutting.
e Pull-in:
R occurs when the chain on the bottom of the bar
is suddenly stopped.
-- occurs when thespike orsaw housing isnot held
securely against the tree or limband/or when the
cut isnotbegun atfull throttle.
-'pu!!s the. saw forward, :and could cause the ==
operator to lose control.
=• •:
BEGIN CUTTING WITH THE
PUR AGAINST LOG.
Figure 26
B. TREE FELLING TECHNIQUES ....
.PLAN YOUR SAWING OPERATION CARE-
FULLY IN ADVANCE
a. Clear the work area. You needa clear area all
around the tree where you can have:secure
footing. • '=: _
b. Studythe natural conditions that can cause
thetree to fall in a particular direction:
1 :) The WIND direction and speed
2.) The LEAN ofthetree :
3.) WEIGHTED with BRANCHESon one side
4.) Surrounding TREES and OBSTACLES
c. Look for decay and r0t. Ifthe trunk is rotted,
itcould snap and falltoward the operator.
d. Check for broken or dead branches which
Could fall on you while cutting.
e: Make sure there is enough room for the tree
to fall. Maintaining adistance of 21/2 tree
lengths from the nearest person or other ob-
jects. Engine noise may drown out warning
carl.
f. Remove dirt, stones, loose bark, nails,
staples, and wire from the tree =where cuts
are to be made.
g. Plan to stand on the up-hill side when cut-
ting on a slope.
h. Plan a clear retreat path to the rear and
diagonal to the line of fall. Figure27.
14

2.
b.
FELLING SMALL TREES -- LESS THAN
6" IN DIAMETER
a. Ifyou knowthe direction offall:
1.) Make a single felling cut on the side away
from the direction offall.
2.) Cut all the way through.
3.) Stop the saw, put it down, and get away
quickly on your planned retreat path.
If you are not sure which way the tree willfall,
use the notch method described for felling
large trees.
WARNING!
DO NOT CUT:
near electrical wires or buildings.
ifyou do not know the direction of tree fall.
at night since you will not be able to see well.
wduring bad weather mstrong wind, snow, rain,
....etc. _--
3. FELLING LARGE TREES m6" DIAMETER
OR MORE
The notch method is used to cut large trees. A
notch is cut on the side of the tree in the desired
direction of fall. After afelling cut is made on the
opposite side of the tree, the tree will tend to fall
into the notch.
NOTE: If the tree has large buttress roots, re-
movebefore making the notch. Cut into the but-
tresses vertically, then horizontally, Figure28.
a. Makethe notch cut. Figure29.
1.) Cut the bottom of the notch first, through
1/3 of the diameter of the tree.
2.) Complete the notch by making the slant
cut.
3.) Remove the notch ofwood.
b. Make thefelling cut on the opposite sideofthe
notch about 2" higher than the bottom of the
notch.
c. Leave enough uncut wood between the felling
cut and the notch to form a hinge. Figure 30.
NOTE: The hinge helps to keel5 the tree from
twisting and falling in the wrong direction.
d. Use a wedge ifthere is any chance that the tree
will not fall in the desired direction.
DIRECTION __
-- 4_llmllllllmll ........
OF FALL _-_--_
4,_
Figure 27
t
/t
Figure 28
DIRECTION
OF FALL
NOTCH
\
DIRECTION OPENING OF
FELLING CUT
CLOSING
HINGE HOLDS THE TREE ON STUMP
AND CONTROLSTHE FALL
Figure 29 Figure 30
NOTE: Before the felling cut is complete, drive
wedges to open up the cut when necessary to
control the direction of fall. Use wood, plastic or
light alloy wedges but never steel or iron, to
avoid kickback and chain damage.
e. Be alert for signs that thetree is ready to fall:
1.) cracking sounds
2.) widening ofthe felling cut
3.) movement in the upper branches.
f. As the tree starts to fall; stop the saw; put it
down, and get away quickly on yourplanned
retreat path.
g. Be extremely cautious with partially fallen trees
that may be poody supported. When a tree
doesn't falllcomp!etely, set the saw aside and
,pul!down the tree with acable winch,block and
tackle or tractor. Do not cut itdown with your saw
to avoid injury.
Don't cut down wind.
DON'T PUT YOURSELF IN THESE POSITIONS
/
Don't cut on lean side. Check the l)ai_ance.
Don't cut on weighted side.
!5

C. BUCKING
Bucking is the term used for.cutting a fallen tree to the
desired log size.
1. IMPORTANT POINTS
a. Cut only one log at a time.
b. Cut shattered wood very carefuilyl Sharp
pieces of wood could be flung toward the
operator.
c. Use a sawhorse to cut small logs. Never
allow another person to hold the logwhile cut-
ting and never holdthe logwith yourleg orfoot.
d. Give special attention to logs under strain
to prevent the saw from pinching. Make the
first cut Onthe compression side torelieve the
stress on the log. (Figure 31)
e. Do not cut in an area where logs, limbs and
roots are tangled such as in a blown down
area. Drag the logsintoa clear area before cut-
ting by pulling out exposed and cleared togs
....................................................7................................first:............................................................................................_.................................................
f."_Make the first bucking cut 1/3 of the way
.through the log and finish with a 2/3 cut on
the opposite side. As the log is being cut, it
will tend to bend. The saw can become
.... ' pinched or hung in the log ifyou make the first
cutdeeper than 1/3ofthe diameter ofthe log.
2. TYPES OF CUTTING USED Figure 32.
-- Overcutting - begin on the top side of the
log with the spur against the log: exert light
pressure downward.
mUndercutting - begin on the under side ofthe
logwith thetop ofthe saw against the log;exert
light pressure upward. During undercutting,
the saw will tend to push back at you. Be pre-
pared for this reaction and hold the saw firmly
tomaintain control.
WARNING!
If saw becomes pinched or hungin a log, don't try
to force it out. You could lose control of the saw re-
sulting in personal injury and/or damage to the
saw. Stop the saw and driveawedge ofplastic,
wood orlight alloy into the cut until'saw can be re-
moved easily. Figure 33. Do not use a Steel or iron
wedge to avoid kickback and chain damage,
3. BUCKING--WITHOUT A SUPPORT
.
a. Overcut with a 1/3 diameter cut.
b. Roll log over and finish with an ovemut.
BUCKING -- USING ANOTHER LOG AS A
SUPPORT (Figure 34):
WARNING!
Do not stand on the log being cut. The cut portion
will roll down hill.
a. InareaA:
1.) Undercut 1/3 of the way through the log.
2.) Finish With an overcut.
b. In area B:
1.) Overcut, 1/3 ofthe waythrough thelog.
2.) Finish with an undercut.
16
WARNING!
Never turn the sawupside down to undercut, The
saw cannot be controlled in this position.
1ST CUT PRESSU RE SIDE
..--_
2NDCUT
Figure 31 _ ......
OVERCUT UNDERCUT
Figure32
WEDGE USED TO
HOLD CUT OPEN
/
i
/
Figure 33
ANOTHER - - .'_:?--__
LOG ASA SUPPORT " _
Figure 34

5. BUCKING wUSING A STAND (Figure 35):
a.
b÷
InareaA:
1.) Undercut 1/3 ofthe way through the log.
2.) Finish with an overcut.
Inarea B:
1.) Overcut 1/3 oftheway through the log.
2,) Finish with an undercut.
D. DEBRANCHING ANDPRUNING II,:.i:
•Work slowly, keeping both hands on the saw
=with a firm grip. Maintain secure footing and bal-
ance,
•Watch out for springpoles. Use extreme caution
............................................=when-cutting-smalt-size-timbs:--SlendeF_materiat .......................
may catch the saw chain andbe whipped toward
' - you or,pult you off balance. ' ,
eBe alert for sPringback. Watch.out for branches
that are bent or under pressure as youare cutting
to avoid being struck by the branch or the saw when
the tension in the wood fibers is released,
• Keep a clear work area. Frequently clear bran-
chesout oftheway to avoidtrippingover them.
1. DEBRANCHING
Limit debranching to limbs shoulder
height or below. Always debranch atree
,'after itisCut down. Only then can debranching
bedone safely and properly.
b. Leave the larger lower limbs to support the
_ :tree asyou work:
c. Start at the base of the felled tree and work
towards the top,_ cutting branches and
,. _ . :limbs. Remove small timbswith one cut. Fig-
= ure36.
d. Keep the tree between you and the chain.
Cut _from .the side of the tree opposite the
branch youare cutting. ,=
eo Remove larger, supporting branches with
the1!3, 2/3 cutting techniques described in
.... the bucking section. = =
...... 1.) Start with an overcut
2,) Finish with an overcut
f. Always =use an overcut to cut small and
freely hanging limbs. Undercutting could
.... cause imbs to fall and pinc h the saw.
2ND CUT 1ST CUT 2ND CUT
CUT CUT FIRST
CUT
Figure 35
WARNING!
Never climb int0a tree to debranch or prune_ Do
not stand on ladders, platforms, a log or inany
positionwhich might cause you to Josecontrol of
.....the-saw; ................................................................................................................................................._-"_...............................................
2. PRUNING
"a. Limit pruning to limbs shoulder height or
:.... below. Do not cut ifbranches are higherthan
your shoulder. Get a professional to do the
ijob_ :
b. Refer to Figure 37 for the pruning tech-
nique.
_: 1,) Undercut 1/3 of the waythrough the limb
: near the trunk ofthe tree.
2.) Finish with an 0vercut farther Outfrom the
' trunk. : : _ .... '_:
3.) Keep out of the way of the fall!ng limb.
4.) Cut thestump flush near the trunk of the
tree. ' ' :: ' ": ....
USE COMMONSENSE_ :
..... Remove smaii limbs
with one cut,.
Figure36
IJl SECONOPRUNINGCUT
THIRD
PRUNINGCUT
FIRST PRUNING CUT
Figure 37
WARNING!
BE ALERT FOR AND GUARD AGAINST
KICKBACK. Do not allow the moving chain to con-
tact any other branches or objects atthe nose of
the guide bar, when debranching or,pruning. Al-
lowing such contact could result in serious per-
sonal injury.
.......................... 17
:• v ::! . :. -

H
L¸: _ : . ,
MAINTENANCE
18
A good maintenance program of regular inspec-
tion and care will increase the service life and help
to maintain the safety and performance of your
saw.
• Make all adjustments or repairs (except car-
buretor adjustments) with:
spark plug wire disconnected
engine cool as opposed to a unit that has
just been run.
•Check the saw for loose bolts, screws, nuts,
and fittings on a regular basis. Loose fasten-
ers can cause an unsafe condition as well as
damage to your saw.
WARNING! t
All chain saw service, repair, adjustments and
maintenance not described in this manual should
be performed by your Sears Service Center.
GUIDE BAR AND CHAIN
IncreaSe the service life of your Guide Bar and
.....--Using the saw properly and as recommended
in this manual. -_
--Maintaining correct Chain Tension, page8.
--Proper lubrication, page 9.
--Regular maintenance as described in this sec.
tion.
1. CHAIN MAINTENANCE _:
• Sharpen the chain when: =
--wood chips are small and powdery. Wood
chips made by the saw chain should be
about the size of the teeth of the chain.
--saw has to be forced through the cut.
--saw cuts toone side
ROUND
_ _ FILE
SUPPORT = _ _//
FLAT SIDE _ _ _ DEPTH
OF FILE HOLDER _GUAGE
O1_TOP OF CUTTER T __
TOP PLA]'E
' . .. SIDE PLATE -o
Figure 38 .........
KEEP 30°MARK
PARALLEL
TO THE
CENTER OF
THE GUIDE
BAR
Figure 39
Figure 40
[CAUTION:i Wear protective gloves when han-
dling the chain, The chain can be sharp
": ;_.:
a. SHARPENING INSTRUCTIONS --Model
358.356090 only (For Power Sharp_i Model
358.356100, see page 12) ....
Items required:
Gloves Medium file .
7!32". file Depth Gauge Tool
6" file holder Vise
1.) Stop engine.
2.) Adjust the chain for proper tension,
page 8.
3.) Clamp bar in -a :vise to hold chain
steady. Do not clamp chain.
4.) Work at the midpoint of the bar, moving
the chain forward by hand as each cut-
ter is filed.
5.) Sharpen cutters.
a.) Support flat side of file holder (with
7/32" round file) on cutter top plate.
Figure38.
b.) Hotd the file holder level with the
30° guide mark parallel to the
.center line of the bar.Figure 39.
c.) _File from inside toward outside of
cutter, straight across, _in one direc-
tion only. Use 2 or 3 strokes per cut-
ting edge. Figure40.
6.) Correct Depth Gauges. .....
a.) Place depth gauge(Catal0g No. 71-
36557) tool over each cutter depth
gauge. Figure41.
b.) FiJe level with the fiat fiJe if depth
gauge is higher than the depth
gauge tool.
c.) Maintain rounded front corner of
depth gauge with a fiat file. Figure41.
NOTE: The very top of the depth
gauge should be flat with the front
half rounded off with a flat file.
b. CHAIN REPLACEMENT
1.)_ Replace the chain when cutters or links
break.
2.) See your Sears Service Center to
replace and sharpen individual cutters
to match your chain.
3.) Always replace the worn sprocket
when installing a new chain to avoid
excessive wear to the chain.

2.GUIDEBAR MAINTENANCE
• Conditionswhich can require guide bar
maintenance:
--saw cuts to one side
--saw has to be forced through a cut
--inadequate supply of oil to bar and
chain.
•Check the condition of the guide bar each
:r time the chain is sharpened. A worn guide
bar will damage thechain and make cut-
ting more difficult.
• Replace theguide bar when:
.... _the inside groove of the guide bar rails is
worn.
.,:--the guide bar is bent or cracked.
a, Remove the guide bar to service.
.... b. Clean oil holes at least once for each
five hours of operation.
......................................................................c:---Remove-sawd ust from-the- guide-bar ......................
groove periodically with a putty knife or
a wire. Figure43 '
Sg
d. Remove burrs by filing the side edges
of the guide bar grooves square with a
flat file. Figure44.
e. Restore square edges to an uneven rail
top by filing with aflat file. Figure44.
MAINTAIN ROUNDED CORNER
OF DEPTH GAUGE .030"" t
Figure 42
I
ICORRECT
GUIDE BAR
GROOVE
IGNITION, COOLING AND EXHAUST SYSTEMS
:: • Carbon deposits will build up on exhaust
ports, spark arrestor, muffler, and spark plug
as the sawis used. All of these parts should
•be cleaned at the same .time to prevent
engine damage, overheating, loss of power,
": and hard starting. ,
.e Clean parts: _
--asrequired
: 'i_at least once for each 25-30 hours of op*
•ration
1. COOLING AND EXHAUST SYSTEM
i
Figure 43
WORN GROOVES _FILE EDGES
SQUARE
Figure44
•Carbon build-up on the cooling and ex-
haust system can cause the engine to
loose power in a cut.
•Keep the spark arrestor clean at all times.
• Replace the spark arrestor when breaks in
the screen are found.
SPARK ARRESTOR
HEAT SHIELD
\
MUFFLER
t
Items required:
--wire brush
3/8" wrench
--hardwood stick
a. Disconnect.the spark plug.
b. Remove .the muffler, baffles, and
screen. Figure 45,
c. Pull the starter (ope until the piston
moves far .enough to close the exhaust
ports..
d. Scrape the carbon deposits from the
exhaust ports and surrounding exhaust
chamber using a hardwood stick.
Figure 46,
[CAUTION:I Do not use a metallic scrap-
ing tool to avoid damage to the piston.
Figure 45 Figure 46 19

,i .... e.
f.
g.
Blow out loosened carbon with com-
pressed air. •
Clean the Spark arrestor screen with a
wire brush or replace if breaks in the
screen are found.
Reassemble muffler parts.
2. SPARK PLUG
• Maintenance is indicated when the engine
is hard to start.
• Keep the spark plug:
--clean
--properly gapped (.025")
CHAMPIONCJ-8YSPARK PLUG
Figure 47
/
Items Required: Small brush, such as a
tooth brush, or a pocket knife.
a. Remove the carburetor cover.
b. Pull the rubber connector from the
spark plug and remove the spark plug
from the cylinder.
c. Clean deposits from the electrodes of
the spark plug with a small brush or a
pocket knife.
d,
e,
f.
NOTE: Be careful when removing,
cleaning, gapping and replacing the
spark plug. If it is damaged, it will not
work properly and must be replaced.
Set the gap between the electrodes to
.025 using a wire or flat gauge. Figure
47.
Replace the spark plug in the cylinder
and attach therubber connector.
Replace carburetor cover and knob.
C, STARTER ROPE REPAIR AND REPLACEMENT
_e A starter rope that breaks next to the pulley
can be repaired.
• Replace a starter rope that breaks more than
2 or 3 inches from thepulley.
2O
WARNING_
Always wear eye protection when ser-
vicing the starter rope. The recoil
spring beneath the pulley is under ten-
sion. if the spring should pop out seri-
ous personal inju rycould result.
NOTE: The recoil spring, located beneath the
pulley, is under tension. If spring pops out, it
will require considerable time and effort to
reinstall. For this reason, you maywant to let
_your Sears Service Center handle this repair.
If you do try to repair the starter rope and the
recoil spring pops out, take the unit to your
Sears Service Center. _ ....
1. Remove the four screws on the side of the
fan housing. Figure48.
: :NOTE: Notice the different lengths of the
screws and their proper locations while
removing the screws.
2. Remove the fan housing.
3. If the starter rope is not broken, release the
spring tension by pulling about 12 inches of
rope from the pulley and catch the rope in
the notch as shown. Figure 49.
,
NOTE: The tension On the starter spring will
be released if the rope has broken.
Turn the pulley counterclockwise until the
spring tension is released.
.L
/
/
/
MEDIUM--d_
Figure 48
_TURN PULLEY
._( _COU NTERCLOCKWISE
ToRELEASE
114"MAX. TAIL _', PULLEY
TO PREVENT ,.,-7 SCREW
INTERFERENCE _'_._
WITH STARTER ___
ooos.
Figure 50
Figure 49