Craftsman 917.776740 User manual

579764301 Rev. 1 03.07.16 BY Printed in U.S.A.
Model No.
917.776740
CAUTION:
Read and follow all
Safety Rules and Instructions
before operating this equipment.
Owner’s Manual
WHEELED
WEEDTRIMMER
675 Series Briggs & Stratton Engine
22 Inch Cut
Sears Brands Management Corp., Hoffman Estates, IL 60179 U.S.A.
Visit our Craftsman website: www.craftsman.com
• Español, p. 18

2
Warranty....................................................2
Safety Rules ...........................................2-4
Product Specifications..............................4
Assembly / Pre-Operation.........................6
Operation ...............................................7-9
Maintenance Schedule ...........................10
Maintenance.......................................10-13
Service and Adjustments...................13-14
Storage....................................................15
Troubleshooting ......................................16
Repair Parts........................................34-43
Sears Service ...........................Back Cover
WARRANTY
TABLE OF CONTENTS
LIMITED TWO YEAR WARRANTY ON CRAFTSMAN WEEDTRIMMER
For two (2) years from date of purchase, when this Craftsman Weedtrimmer is main-
tained, lubricated, and tuned up according to the operating and maintenance instruc-
tions in the owner’s manual, Sears will repair free of charge any defect in material or
workmanship.
If this Craftsman Weedtrimmer is used for commercial or rental purposes, this warranty
applies for only 90 days from the date of purchase.
This Warranty does not cover:
• Expendable items which become worn during normal use, such as rotating lines,
belts, air cleaners and spark plug.
• Repairs necessary because of operator abuse or negligence, including bent crank-
shafts and the failure to maintain the equipment according to the instructions con-
tained in the owner’s manual.
Warranty service is available by returning the Craftsman Weedtrimmer to the nearest
Sears Parts & Repair Center in the United States. This warranty applies only while this
product is used in the United States.
This Warranty gives you specific legal rights, and you may also have other rights which
vary from state to state.
Sears Brands Management Corporation, Hoffman Estates, IL 60179
WARNING: This trimmer is equipped with an internal combustion engine and
should not be used on or near any unimproved forest-covered, brush-covered or grass-
covered land unless the engine’s exhaust system is equipped with a spark arrester
meeting applicable local or state laws (if any). If a spark arrester is used, it should be
maintained in effective working order by the operator.
In the state of California the above is required by law (Section 4442 of the California
Public Resources Code). Other states may have similar laws. Federal laws apply on
federal lands. A spark arrester for the muffler is available through your nearest Sears
service center (see the REPAIR PARTS section of this manual).
SAFETY RULES
Look for this symbol to point out
important safety precautions. It means
CAUTION!!! BECOME ALERT!!!
YOUR SAFETY IS INVOLVED.
The operation of any trimmer can result in foreign objects thrown into
the eyes, which can result in severe eye damage. Always wear safety
glasses or eye shields while operating your trimmer or performing any
adjustments or repairs. We recommend standard safety glasses or a
wide vision safety mask worn over spectacles.
WARNING: In order to prevent acci-
dental starting when setting up, transport-
ing, adjusting or making repairs, always
disconnect spark plug wire and place wire
where it cannot contact plug. 43
BRIGGS & STRATTON 4-CYCLE ENGINE
KEY PART
NO. NO. DESCRIPTION
455 593960 Cup-Flywheel
493 593330 Bracket-Mounting
(Carburetor)
505 793515 Nut (Governor Control Lever)
523 796503 Dipstick
524 691876 Seal-Dipstick Tube
562 793514 Screw
(Governor Control Lever)
598 592587 Shim-End Play (Crankshaft
or Camshaft Bearing)
601 791850 Clamp-Hose (Green)
608 594062 Starter-Rewind
613 590562 Screw (Muffler)
615 690340 Retainer-Governor Shaft
616 590516 Crank-Governor
617 270344s Seal-O Ring (Intake Manifold)
621 692310 Switch-Stop
623 799581 Seal-O Ring
(Carburetor Spacer)
633 691321 Seal-Choke/Throttle Shaft
(Throttle Shaft)
635 692076 Boot-Spark Plug
668 590546 Spacer (Flywheel)
718 690959 Pin-Locating
724 697478 Retainer-Seal
741 594105 Gear-Timing
745 691146 Screw (Brake) (#10-32 x .86)
745A 690589 Screw (Brake) (#10-32 x .5)
830 590536 Stud-Rocker Arm
832 594109 Guard-Muffler
836 690661 Screw (Muffler Guard)
842 691031 Seal-O Ring (Dipstick)
847 594110 Dipstick/Tube Assembly
850 100106 Sealant-Liquid
868 594096 Seal-Valve
875 594107 Base-Air Cleaner
914 591103 Screw (Rocker Cover)
KEY PART
NO. NO. DESCRIPTION
922 692135 Spring-Brake
923 691487 Brake
951 591104 Lever-Choke
957 594061 Cap-Fuel Tank
968 594106 Cover-Air Cleaner
971 590552 Screw (Air Cleaner Base to
Carburetor) (M4.2 x 14mm)
972 594112 Tank-Fuel
975 594632 Bowl-Float
1005 594102 Fan-Flywheel
1022 594088 Gasket-Rocker Cover
1023 594087 Cover-Rocker
1026 590515 Rod-Push
(Intake and Exhaust)
1029 590526 Arm-Rocker (Exhaust)
1029A 590527 Arm-Rocker (Intake)
1036 - - - Label-Emissions (Available
from a Briggs & Stratton
Authorized Dealer)
1058 N/A Operator’s Manual (Not
Available at this Printing)
1127 590554 Screw (Float Bowl to
Carburetor Body)
1238 590562 Screw (Carburetor Spacer)
(M5 x 17mm)
1263 697124 Reed-Breather
1264 793453 Screw (Breather Reed)
1329 N/A Replacement Engine (Not
Available at this Printing)
1330 N/A Repair Manual (Not Available
at this Printing)
- - 398067 Spark Arrester
(available accessory)
Carburetor Overhaul Kit – Key Number 121
Engine Gasket Set – Key Number 358
NOTE: All component dimensions given in U.S.
inches. 1 inch = 25.4 mm
MODEL NUMBER 103M02-0008-F1

42
KEY PART
NO. NO. DESCRIPTION
1 594100 Cylinder Assembly
3 299819s Seal-Oil (Magneto Side)
4 594101 Sump-Engine
5 594091 Head-Cylinder
7 592358 Gasket-Cylinder Head
11 590522 Tube-Breather
12 799587 Gasket-Crankcase
13 590512 Screw (Cylinder Head)
16 594104 Crankshaft
20 399781s Seal-Oil (PTO Side)
22 692551 Screw (Crankcase Cover/
Sump) (1/4-20 x 1.19)
22A 590673 Screw (Crankcase Cover/
Sump) (1/4-20 x .78)
23 594054 Flywheel
24 222698s Key-Flywheel (Aluminum)
25 594099 Piston Assembly (Standard)
26 594098 Ring Set (Standard)
27 691588 Lock-Piston Pin
28 298909 Pin-Piston
29 594089 Rod-Connecting
32 691664 Screw (Connecting Rod)
33 594095 Valve-Exhaust
34 594094 Valve-Intake
35 590532 Spring-Valve (Intake)
36 590532 Spring-Valve (Exhaust)
37 594103 Guard-Flywheel
40 594092 Retainer-Valve
43 697799 Slinger-Governor/Oil
45 590514 Tappet-Valve
46 594090 Camshaft
48 N/A Short Block (Not Available
at this Printing)
58 591108 Rope-Starter
60 281434s Grip-Starter Rope
78 793480 Screw (Flywheel Guard)
KEY PART
NO. NO. DESCRIPTION
104 590558 Pin-Float Hinge
105 594581 Valve-Float Needle
117 594059 Jet-Main (Standard)
118 593271 Jet-Main (High Altitude)
(5000 > 9000 Feet)
121 590589 Kit-Carburetor Overhaul
122 590549 Spacer-Carburetor
125 594057 Carburetor
133 591120 Float-Carburetor
137 594633 Gasket-Float Bowl
(Pack of 5)
155 594093 Plate-Cylinder Head
163 799580 Gasket-Air Cleaner
187 791766 Line-Fuel
(Cut to Required Length)
188 793480 Screw (Control Bracket)
192 590535 Adjuster-Rocker Arm
202 590517 Link-Mechanical Governor
209 590541 Spring-Governor (Purple)
216 590547 Link-Choke
217 590740 Spring-Choke Return
222 590560 Bracket-Control
227 590520 Lever-Governor Control
238 594097 Cap-Valve
300 594108 Muffler
305 590586 Screw (Blower Housing)
318 793480 Screw (Mounting Bracket)
(M5 x 14.1mm)
332 690662 Nut (Flywheel)
333 595009 Armature-Magneto
334 691061 Screw (Magneto Armature)
337 594056 Plug-Spark
356 595018 Wire-Stop
358 594114 Gasket Set-Engine
404 690272 Washer (Governor Crank)
445 593260 Filter-Air Cleaner Cartridge
BRIGGS & STRATTON 4-CYCLE ENGINE MODEL NUMBER 103M02-0008-F1
3
I. GENERAL OPERATION
• Read, understand, and follow all
instructions on the machine and in the
manual before starting. Be thoroughly
familiar with the controls and the proper
use of the machine before starting.
• Do not put hands or feet near or under
rotating parts.
• Keep all parts of your body away from
muffler and spinning line. A hot muffler
can cause serious burns.
• Only allow responsible individuals, who
are familiar with the instructions, to
operate the machine.
• Stay away from breakable objects, such
as house windows, auto glass, green-
houses, etc.
• Clear the area of objects such as rocks,
toys, wire, bones, sticks, etc., which
could be picked up and thrown by the
spinning lines.
• Be sure the area is clear of other people
before trimming, particularly small chil-
dren and pets. Stop machine if anyone
enters the area.
• Wear appropriate clothing such as a
long-sleeved shirt or jacket. Also wear
long trousers or slacks. Do not wear
shorts.
• Do not wear loose clothing which could
get caught in this equipment.
• Do not operate the machine when bare-
foot or wearing open sandals. Always
wear work gloves and sturdy footwear.
Leather work shoes or short boots work
well for most people. These will protect
the operator’s ankles and shins from
small sticks, splinters, and other debris,
and improve traction.
WARNING: Engine exhaust, some
of its constituents, and certain vehicle
components contain or emit chemicals
known to the State of California to cause
cancer and birth defects or other repro-
ductive harm.
CAUTION: Muffler and other engine
parts become extremely hot during
operation and remain hot after engine
has stopped. To avoid severe burns on
contact, stay away from these areas.
• Donotpullmachinebackwardsunlessab-
solutelynecessary. Alwayslookdownand
behindbeforeandwhilemovingbackwards.
• Do not operate the machine without
proper guards, plates or other safety
protective devices in place.
• See manufacturer’s instructions for
proper operation and installation of
accessories. Only use accessories ap-
proved by the manufacturer.
• Neveruseblades, wire, orflailingdevices.
This unit is designed for line trimmer use
only. Use of other accessories or attach-
ments will increase the risk of injury.
• Stop the rotating trimmer head when
crossing gravel drives, walks, or roads.
Wait for the cutting lines to stop rotat-
ing.
• Stop the engine (motor) whenever
you leave the equipment and allow it
to cool, before cleaning, repairing or
inspecting the unit. Be sure the trim-
mer head and all moving parts have
stopped.
• Operate only in daylight or good artifi-
cial light.
• Do not operate the machine while un-
der the influence of alcohol or drugs.
• Never operate machine in wet grass.
Always be sure of your footing: keep a
firm hold on the handle and walk; never
run.
• If the equipment should start to vibrate
abnormally, stop the engine (motor)
and check immediately for the cause.
Vibration is generally a warning of
trouble.
• Always wear safety goggles or safety
glasses with side shields when operat-
ing machine.
II. SLOPE OPERATION
Slopes are a major factor related to slip and
fall accidents which can result in severe
injury. All slopes require extra caution. If
you feel uneasy on a slope, do not trim it.
DO:
• Trim across the face of slopes: never up
and down. Exercise extreme caution
when changing direction on slopes.
• Remove obstacles such as rocks, tree
limbs, etc.
• Watch for holes, ruts, or bumps. Tall
grass can hide obstacles.

4
DO NOT:
• Do not trim near drop-offs, ditches or
embankments. The operator could lose
footing or balance.
• Do not trim excessively steep slopes.
• Do not trim on wet grass. Reduced foot-
ing could cause slipping.
III. CHILDREN
Tragic accidents can occur if the opera-
tor is not alert to the presence of chil-
dren. Children are often attracted to the
machine and the trimming activity. Never
assume that children will remain where
you last saw them.
• Keep children out of the trimming area
and under the watchful care of another
responsible adult.
• Be alert and turn machine off if children
enter the area.
• Before and while moving backwards,
look behind & down for small children.
• Never allow children to operate the
machine.
• Use extra care when approaching blind
corners, shrubs, trees, or other objects
that may obscure vision.
IV. SERVICE
• Use extra care in handling gasoline and
other fuels. They are flammable and
vapors are explosive.
- Use only an approved container.
- Never remove gas cap or add fuel with
with the engine running. Allow engine
to cool before refueling. Don't smoke.
- Never refuel the machine indoors.
- Never store the machine or fuel
container inside where there is an
open flame, such as a water heater.
- Move away from fueling site before
starting engine.
• Never run trimmer inside a closed area.
• Never make adjustments or repairs with
the engine (motor) running. Disconnect
the spark plug wire, and keep the wire
away from the spark plug to prevent ac-
cidental starting.
• Keep nuts and bolts, especially trimmer
head and engine bolts, tight and keep
equipment in good condition.
• Never tamper with safety devices.
Check their proper operation regularly.
• Keep machine free of grass, leaves, or
other debris buildup. Clean oil or fuel
spillage. Allow machine to cool before
cleaning or storing.
• Stop and inspect the equipment if you
strike an object. Repair, if necessary,
before restarting.
• Do not change the engine governor set-
ting or overspeed the engine.
• Clean and replace safety and instruction
decals as necessary.
Serial Number:
Date of Purchase:
Gasoline Capacity / Type: 1.6 Quarts (Unleaded Regular)
Oil Type (API SJ–SN): SAE 30 (above 32°F); SAE 5W-30 (below 32°F)
Oil Capacity: 15.5 Ounces
Spark Plug (Gap: .020") Autolite 3924
Trimmer Line Length: 18.75 Inches (0.155 Inch Diameter)
•The model and serial numbers will be found on a decal on the rear of the trimmer.
Record both serial number and date of purchase in the space provided above.
PRODUCT SPECIFICATIONS
41
BRIGGS & STRATTON 4-CYCLE ENGINE
455
332
668
78
37
850
23
1005
305
60
58
608
836
832
300
613
1022
358
842
868
524
163
623
12
3
20
7
Engine Power Rating Information
The gross power rating for individual gas engine models is labeled in accordance with SAE
(Society of Automotive Engineers) code J1940 (Small Engine Power & Torque Rating Procedure),
and rating performance has been obtained and corrected in accordance with SAE J1995 (Revision
2002-05). Torque values are derived at 3060 RPM; horsepower values are derived at 3600 RPM.
Actual gross engine power will be lower and is affected by, among other things, ambient operat-
ing conditions and engine-to-engine variability. Given both the wide array of products on which
engines are placed and the variety of environmental issues applicable to operating the equipment,
the gas engine will not develop the rated gross power when used in a given piece of power equip-
ment (actual “on-site” or net power). This difference is due to a variety of factors including, but not
limited to, accessories (air cleaner, exhaust, charging, cooling, carburetor, fuel pump, etc.), ap-
plication limitations, ambient operating conditions (temperature, humidity, altitude), and engine-to-
engine variability. Due to manufacturing and capacity limitations, Briggs & Stratton may substitute
an engine of higher rated power for this Series engine.
MODEL NUMBER 103M02-0008-F1

40
BRIGGS & STRATTON 4-CYCLE ENGINE
623
493
163
1238 951
125
133
975
1127
617
104
217
122
623
724
216
117
118
137
445
875
968
11
971
163
318
957
601
187
972
105
217
163
121
104
617
623
137
105
850
MODEL NUMBER 103M02-0008-F1
5
Congratulations on making a smart pur-
chase. Your new Craftsman® product is
designed and manufactured for years of
dependable operation. But like all prod-
ucts, it may require repair from time to
time. That’s when having a Repair Protec-
tion Agreement can save you money and
aggravation.
Purchase a Repair Protection Agreement
now and protect yourself from unexpected
hassle and expense.
Here’s what’s included in the Agreement:
• Expert service by our 12,000 profe-
sional repair specialists.
• Unlimited service and no charge for
parts and labor on all covered repairs.
• Product replacement if your covered
product can’t be fixed.
• Discount of 10% from regular price of
service and service-related parts not
covered by the agreement; also, 10%
off regular price of preventive mainte-
nance check.
• Fast help by phone – phone sup-
port from a Sears representative on
products requiring in-home repair, plus
convenient repair scheduling.
Once you purchase the Agreement, a
simple phone call is all that it takes for you
to schedule service. You can call anytime
day or night, or schedule a service ap-
pointment online.
Sears has over 12,000 professional repair
specialists, who have access to over 4.5
million quality parts and accessories.
That’s the kind of professionalism you can
count on to help prolong the life of your
new purchase for years to come. Pur-
chase your Repair Protection Agreement
today!
Some limitations and exclusions apply.
For prices and additional information
call 1-800-827-6655.
Sears Installation Service
For Sears professional installation of home
appliances, garage door openers, water
heaters, and other major home items, in
the U.S.A. call 1-800-4-MY-HOME®.
Repair Protection Agreements

6
ASSEMBLY / PRE-OPERATION
Read these instructions and this manual
in its entirety before you attempt to as-
semble or operate your new trimmer.
IMPORTANT: This trimmer is shipped
WITHOUT OIL OR GASOLINE in the engine.
Your new trimmer has been assembled
at the factory with the exception of those
parts left unassembled for shipping
purposes. All parts such as nuts, wash-
ers, bolts, etc., necessary to complete the
assembly have been placed in the parts
bag. To ensure safe and proper operation
of your trimmer, all parts and hardware
you assemble must be tightened securely.
Use the correct tools as necessary to
ensure proper tightness.
When right hand (RH) or left hand (LH) is
mentioned in this manual, it means when
you are in the operating position (stand-
ing behind the handle).
LIFT UP
Lower
handle
Upper handle
Handle
knob
Bottle of oil Trimmer Lines (2) Sets
(0.155 diameter
x 18.75 inches long)
Loose Parts Packed Separately
REMOVE TRIMMER FROM CARTON
1. Removeloosepartsincludedwithtrimmer.
2. Cut down two end corners of carton
and lay end panel down flat.
3. Remove all packing materials.
4. Roll trimmer out of carton and check car-
tonthoroughlyfor additional loose parts.
HOW TO SET UP YOUR TRIMMER
TO UNFOLD HANDLE
IMPORTANT: Unfold handle carefully so
as not to pinch or damage control cables.
1. Loosen handle knob enough to allow
upper handle to be unfolded from the
shipping position.
2. Raiseupperhandle section into placeon
lower handle and tighten handle knob.
3. Remove handle padding holding trim-
mer head control bar to upper handle.
Your trimmer handle can be adjusted for
your trimming comfort. Refer to “ADJUST
HANDLE” in the Service and Adjustments
section of this manual.
INSTALL STARTER ROPE
1. Loosen T-knob.
2. Place engine brake control in RUN
position.
3. Slowly pull engine starter rope out until
rope will slip into loop of rope guide.
4. Tighten T-knob.
Engine brake
control “RUN”
position
Engine
starter rope
Rope guide T-Knob
39
MODEL NUMBER 103M02-0008-F1
BRIGGS & STRATTON 4-CYCLE ENGINE
13
1026
1029
45
7
36
35
155
33
34
40
5
868
1029A
192
40
163
623
1022
914
1022
1023
238
238
830
337
635
188
334
333
635
222
209
202
745 745A
621
922
356
923

38
MODEL NUMBER 103M02-0008-F1
BRIGGS & STRATTON 4-CYCLE ENGINE
24
26
718
27
1
3
25
28
46
16
20
12
4
1264
505
616
562
615
227
1263
22
404
718
22A
741
32
29
27
43
524
847
523
842
598
48 1330132910581036
850
7
IMPORTANT: This trimmer is
shipped WITHOUT OIL OR
GASOLINE in the engine.
NOTE: Gasoline containing up to 10%
ethanol (E10) is acceptable for use in
this machine. The use of any gasoline
exceeding 10% ethanol (E10) will void the product warranty.
OPERATION
KNOW YOUR TRIMMER
READ THIS OWNER'S MANUAL AND ALL SAFETY RULES BEFORE OPERATING YOUR
TRIMMER. Compare the illustrations with your trimmer to familiarize yourself with the
location of various controls and adjustments. Save this manual for future reference.
Starter handle
Gasoline cap
Air filter
Trimmer
head
Handle knob
Trimmer
line
Engine oil cap
w/dipstick
Chassis
cover
Trimmer head control bar
Engine brake
control
Trimmer head
control lever
Engine brake control – used for starting
and stopping the engine.
Starter handle – used for starting the
engine.
Trimmer head control bar – must be held
down to the handle to engage trimmer head.
Release to stop the trimmer head.
These symbols may appear on your trimmer or in literature supplied with the product. Learn and
understand their meaning.
Muffler
Spark plug

8
HOW TO USE YOUR TRIMMER
TO ADJUST TRIMMING HEIGHT
CAUTION: Stop the engine and wait for
all moving parts to stop. Disconnect spark
plug wire from spark plug and place wire
where it cannot come in contact with plug.
The height of cut can be set to six (6) dif-
ferent positions ranging from 1-1/2 inches
to 3 inches. Recommended cutting height
for the average yard is 2 inches.
1. To adjust trimming height, push in the
locking plate tab and move trimmer
head up or down to desired position.
2. Release tab and be sure head is
locked into one of the six (6) height
positions.
TRIMMER HEAD DRIVE CONTROL
Your trimmer is equipped with a trimmer
head drive control bar which will require
the operator to be positioned behind the
trimmer handle to operate the trimmer.
• To start trimmer head rotation, push the
trimmer head control lever (1) forward
and hold the trimmer head control bar
down to the handle (2).
• To stop trimmer head rotation, release
the trimmer head control bar.
BEFORE STARTING ENGINE
ADD OIL
Your trimmer is shipped without oil in the
engine. For type and grade of oil to use,
see “ENGINE” in the Maintenance section
of this manual.
CAUTION: DO NOT overfill engine with
oil, or it will smoke on startup.
1. Be sure trimmer is level and area
around oil fill is clean.
2. Remove oil dipstick from oil fill spout.
Make sure that rim of spout is clean.
3. You receive a container of oil with the
unit. Slowly pour the entire container
down the oil fill spout into the engine.
NOTE: Initial oil fill requires only 18 oz.
due to residual oil in engine from the
manufacturers 100% quality testing. When
changing oil you may need 20 oz.
4. Insert and tighten dipstick.
IMPORTANT:
• Check oil level before each use. Add
oil if needed. Fill to full line on dipstick.
• Change the oil after every 25 hours of
operation or each season. You may
need to change the oil more often un-
der dusty, dirty conditions.
Locking
Plate Tab
Adjustable
Trimmer
Head
TO ENGAGE
TRIMMER HEAD
Trimmer head
control lever
Trimmer head
control bar
Theoperationofany trimmer can result in foreign objects thrown
into the eyes, which can result in severe eye damage. Always
wear safety glasses or eye shields while operating your lawn
mower or performing any adjustments or repairs. We recom-
mend standard safety glasses or a wide vision safety mask over spectacles.
Use ear
protec-
tors to
avoid
damage to hearing.
37
CRAFTSMAN WEED TRIMMER - - MODEL NUMBER 917.776740
KEY PART
NO. NO. DESCRIPTION
1 581708381 Chassis Assembly
2 182219 Line, Trimmer .155 diameter x 18.75 long
3 173715 Screw, Self-Tapping 5/16-18 x 1
4 185476 V-Belt
5 586909102 Bracket, Idler
6 166042 Pulley, Idler, V-Groove
7 173716 Bolt, Hex Head 3/8-16 x 1.25
8 73930600 Locknut, Hex 3/8-16
9 166043 Pulley, Idler, Flat
10 160829 Bolt, Shoulder
11 73930500 Locknut, Hex 5/16-18
12 173717 Spacer
13 174719 Bolt, Shoulder
14 409149 Nut, Hex, Flangelock
15 173811 Spring, Return
16 584953201 Deflector, Bottom
17 17060410 Screw 1/4-20 x 1/2
18 178848 Screw #10-24 x 3/4
19 586916602 Belt Keeper
20 430485 Cover, Chassis, Top
21 149746 Screw #10-24 x 1-3/4
22 73610600 Nut, Hex 3/8-24 UNF
23 850263 Washer, Lock 3/8
24 19121214 Washer, Flat 3/8
25 180340 Pulley, Driven
26 172551 Spacer, Pulley
27 174549 Bearing
28 172520 Jackshaft
29 169766X479 Cover, Chassis, Bottom
30 174543 Spindle Housing Assembly
(* Includes Upper Bearing, Key Number 27)
31 174581 Ring, Retaining, External, 17mm
32 173973 Spring, Locking Plate
33 172519 Locking Plate
34 180338 Carrier Plate Assembly
35 182217 Mow Ball Assembly
(Includes Key Numbers 27, 37 and 38)
36 172516 Cover, Bearing
37 174580 Ring, Retaining, Internal, 40mm
38 172523 Mow Ball
39 180334 Bolt, Mow Ball
40 180333 Spindle Assembly, Complete
(Includes Key Numbers 22-28 and 30-39)
41 174029 Spacer
43 174042 Decal, Instruction
45 174596X479 Belt Keeper, Bottom
46 17060408 Screw, Self-Tapping
47 182205 Decal, Instruction
NOTE: All component dimensions given in U.S. inches. 1 inch = 25.4 mm.
IMPORTANT: Use only Original Equipment Manufacturer (O.E.M.) replacement parts.
Failure to do so could be hazardous, damage your weed trimmer and void your warranty.

36
CRAFTSMAN WEED TRIMMER - - MODEL NUMBER 917.776740
12
43
14
1
17
17
4
13
16
18
34
33
39
38
27
37
27
30*
36
31
35
32
3
22
23
24
25
26
27*
28
9
10
19
7
6
41
5
8
11
15
29
40
45
21 47
46
20
2
9
TRIMMING TIPS
• If the weeds or grass are tall and thick,
operate the trimmer at a slower walking
speed.
• Frequently clean the underside of the
trimmer to remove any grass build up.
Keep top of engine around starter clear
and clean of grass clippings and chaff.
This will help engine air flow and extend
engine life.
• For best results and longer lasting
line, use the ends of the line to do the
cutting. This is easily done by moving
slowly through very thick and heavy
weeds.
• Use the left side of trimmer when trim-
ming along fences, walls, flowerbeds
and other such objects.
• If trimmer lines become too short, it
will take longer to complete the job. If
trimmer lines are worn to less than half
their original length, they should be
replaced. See “TO REPLACE TRIMMER
LINE” in the Maintenance section of this
manual.
• Trimmer head contact with concrete, as-
phalt or other hard surfaces may cause
premature wear of the ball on bottom of
trimmer head.
ADD GASOLINE
• Fill fuel tank to bottom of tank filler neck.
Do not overfill. Use fresh, clean, regular
unleaded gasoline with a minimum of 87
octane. Do not mix oil with gasoline. Pur-
chase fuel in quantities that can be used
within 30 days to assure fuel freshness.
CAUTION: Alcohol blended fuels (called
gasohol or using ethanol or methanol) can
attract moisture which leads to separation
and formation of acids during storage.
Acidic gas can damage the fuel system
of an engine while in storage. To avoid
engine problems, the fuel system should
be emptied before storage of 30 days
or longer. Drain the gas tank, start the
engine and let it run until the fuel lines
and carburetor are empty. Use fresh fuel
next season. See Storage Instructions for
additional information. Never use engine or
carburetor cleaner products in the fuel tank
or permanent damage may occur.
CAUTION: Wipe off any spilled oil or
fuel. Do not store, spill or use gasoline
near an open flame.
Gasoline
filler cap
Engine
oil cap
1. Move engine brake control lever to
RUN position.
2. Hold upper handle firmly and pull
starter handle quickly. Do not allow
starter rope to snap back.
TO STOP ENGINE
• To stop engine, move engine brake
control lever to OFF position.
TO START ENGINE
NOTE: Due to protective coatings on the
engine, a small amount of smoke may be
present during the initial use of the prod-
uct and should be considered normal.
NOTE: Your engine is equipped with an
automatic choke system. No priming or
choking is required before starting.
Starter
handle
Engine
brake
control

10
MAINTENANCE
GENERAL RECOMMENDATIONS
The warranty on this trimmer does not
cover items that have been subjected to
operator abuse or negligence. To receive
full value from the warranty, operator must
maintain trimmer as instructed in this
manual.
Some adjustments will need to be made
periodically to properly maintain your unit.
At least once a season, check to see if
you should make any of the adjustments
described in the Service and Adjustments
section of this manual.
• At least once a year, replace the spark
plug and replace air filter element. A
new spark plug and clean/new air filter
element assure proper air-fuel mixture
and help your engine run better and
last longer.
• Follow the maintenance schedule in
this manual.
BEFORE EACH USE
1. Check engine oil level.
2. Check for loose fasteners.
3. Clean under engine cover.
LUBRICATION
To prolong the useful life of your trimmer,
change engine oil as recommended in
this section of Owner’s Manual.
IMPORTANT: Do not oil or grease plastic
wheel bearings. Viscous lubricants will
attract dust and dirt that will shorten the life
of the self- lubricating bearings. If you feel
they must be lubricated, use only a dry,
powdered graphite type lubricant sparingly.
35
KEY PART
NO. NO. DESCRIPTION
1 - - - Engine, Briggs & Stratton,
Model No. 103M02-0008-F1
(See Breakdown)
2 150406 Bolt, Engine Mounting 3/8-16
3 588452702 Pulley / Flywheel, Engine
4 88348 Washer, Flat
8 169821X479 Handle, Lower
9 428867 Screw, Hex Washer Head
5/16-18 x 3/4
10 169797X479 Handle, Upper
11 170980 Bolt, Handle
12 189713X428 Knob, Handle
15 179751 Handle Adjuster Assembly
16 581902101 Guide, Rope
18 66426 Wire Tire
19 587564101 Control Bar
20 588599201 Engine Brake Control
21 199687 Screw, Hex Washer Head
22 447829 Axle Shaft Assembly
23 428867 Screw, Hex Washer Head
5/16-18 x 3/4
24 169823 Spacer
25 197480 O-Ring
26 431880X460 Wheel & Tire Assembly 12 x 1-3/4
27 409149 Nut, Hex, Flangelock 3/8-16
28 584954101 Drive Control Cable
30 501928601 Decal, Engine Cover
31 172221X004 Bracket, Support, Axle Shaft
33 191730 Nut
36 851084 Bolt, Hex Head
37 850263 Washer, Lock
38 851074 Washer, Flat, Hardened
41 445315X479 Tube, Axle Cover
42 581912601 T-Knob
- - 579764301 Owner's Manual
Available accessories not included with trimmer:
- - 71 33623 Gas Can (2.5 Gallon Container)
- - 71 33000 SAE 30W Oil (20 Ounce Bottle)
- - 71 79991 Trimmer Line
(Pack of 24 strings, .155 dia.)
CRAFTSMAN WEED TRIMMER - - MODEL NUMBER 917.776740
NOTE: All component dimensions given in U.S. inches. 1 inch = 25.4 mm.
IMPORTANT: Use only Original Equipment Manufacturer (O.E.M.) replacement parts.
Failure to do so could be hazardous, damage your weed trimmer and void your warranty.