Craftsman 987.799600 User manual

IMPORTANT MANUAL DO NOT THROW AWAY
SEARS
OWNER'S
MANUAL
MODEL NO.
987.799600
ACaution:
Read and Follow
All Safety Rules
and
Instructions
Before Operating
This Equipment.
SIEARS [RAFTSMAN™
5Horsepower
CHIPPER/VAC
Safety
Assembly
Operation
Customer Responsibilities
Repair Parts
SEARS, ROEBUCK AND CO., HOFFMAN ESTATES, IL 60179 U.S.A.
FORM 1769199 (12/93)

II.
•
Limited Warranty
For One Year from date of purchase, when this ChipperlVac is maintained, lubricated, and tuned up
according to the operating and maintenance instructions
in the Owner's Manual, Sears will repair free of
charge any defect
in material or workmanship.
This warranty excludes the collection bag, spark plug, air cleaner, and chipper blade which are
expendable parts and become worn during normal use.
If this ChipperlVac is used for commercial or rental purposes, this warranty applies for only 30 days from
the date of purchase.
WARRANTY SERVICE
IS AVAILABLE BY CONTACTING THE NEAREST SEARS SERVICE
CENTER/DEPARTMENT
IN THE UNITED STATES. This warranty applies only while this product is in
use 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, ROEBUCK AND CO., D/817WA -HOFFMAN ESTATES,
IL 60179
WARNING TO CALIFORNIA OWNERS AND OTHER POWER EQUIPMENT OPERATORS
Under California law, and under the laws of several other states, you are not permiUed to operate an internal combustion
engine using hydrocarbon fuels on any forest covered, brush covered, or grass covered land, or on land covered with
grain, hay, or other flammable agricultural crop, without an engine spark arrester in continuous effective working order.
The engine on your power equipment like most outdoor power equipment, is an internal combustion engine that burns
gasoline, a hydrocarbon fuel. Therefore, your power equipment must be equipped with a spark arrester muffler in
continuous effective working order. The spark arrester must be aUached to the engine exhaust system in such a manner
that flames or heat from the system will not ignite flammable material. Failure of the owner/operator of the equipment
to comply with this regulation is a misdemeanor under California law, and may also be a violation of other state and/or
federal regulations, laws, ordinances, or codes. Contact your local fire marshal or forest service for specific information
about what regulations apply in your area.
NOTE: This ChipperNac is not equipped with a spark arrester on its muffler as standard equipment. You must provide the
spark arrester. A spark arrester for the muffler is available through your Sears Service Center.
TO PREVENT PERSONAL INJURY OR PROPERTY DAMAGE
• Cutting blades begin to rotate when engine starts and slow down gradually after the engine is shut off. Do not allow
hands or any other part of the body or clothing inside the vacuum inlet, chipper chute, discharge opening, blower
deflector, or near any moving part .
•
Before inspection, cleaning, or servicing machine, shut off engine, disconnect spark plug wire, and make sure that all
moving parts have come to a complete stop.
This machine meets voluntary safety standard
B71.6-1990, which
is sponsored by the Outdoor
Power Equipment Institute, Inc., and is published
by the American Standards Institute, Inc.

Table of Contents
Model/Serial Number &Specifications 2
Safety 3-5
Training 3
Preparation 3
Operation 4
Customer Responsibilities and Storage 5
Safety Decals 5
Accessories 6
Unpacking the ChipperlVac 6
Assembly 7-9
Operation 10-22
Features and Controls 10
Engine Operation
11
General Operation 12
Vacuuming and Chipping Operation 13
Materials to Avoid 13
Walk-Behind Vacuuming 14-15
Vacuum Hose Operation 16-18
Blower Operation 19-20
Chipper Operation 20-21
Clearing Jams and Clogs
21
Removing and Installing Shredder Screen 22
Customer Responsibilities 23-30
Important Service Message 23
Service Recommendations 23-24
Check and Change Engine Oil 23
Service the Air Cleaner 24
Clean the Cooling System 24
Inspect Engine Spark Arrester 24
Service the Spark Plug 24
Carburetor and Ignition System Information 25
Lubrication 25
Check Bolts and Nuts for Tightness 25
Replace the Chipper Cutting Blade 25-27
Torque Specifications 27
Off-Season Storage 28
Troubleshooting 29-30
Decals 31
Parts List 32-35
Index
36
ALOOK FOR THIS SYMBOL TO POINT
OUT IMPORTANT SAFETY
PRECAUTIONS. IT MEANS -
ATTENTION!!! BECOME ALERT!!!
YOUR SAFETY IS INVOLVED.
1

Model/Serial Number & Specifications
CONGRATULATIONS on your purchase of aSears Craftsman ChipperlVac. It has been designed, engineered and
manufactured to give you the best possible dependability and performance.
Should you experience any problems you cannot easily remedy, please contact your nearest Sears Service Center or
Retail Store. We have competent, well-trained technicians and the proper tools to service or repair this machine.
Please read and keep this Manual. The instructions will help you assemble, operate, and maintain your machine
properly. Always observe the SAFETY RULES.
MODELl SERIAL NUMBER INFORMATION
PRODUCT SPECIFICATIONS
THE MODEL AND SERIAL NUMBER DECAL IS
LOCATED ON THE LEFT (OPERATOR'S) SIDE OF
THE UNIT. SEE BELOW.
You should record both the serial number and the date
of purchase. Keep them
in asafe place for future
reference.
ChipperNac
Weight
Length with Handlebars Extended
Length with Handlebars Folded
Width
651bs.
48 in.
28 in.
22 in.
Spark Plug (gap 0.030-in.) Champion J19LM
Autolite 458, or equivalent.
In Canada, replace with
resistor spark plug.
Oil
(21 ounce capacity)
Model/Serial
Number
SERIAL
NUMBER: _
DATE OF PURCHASE: _
2
Engine
Engine Type
Engine Displacement
Gasoline Capacity
Valve Clearance
Engine
5 HP Tecumseh Model TVS 115'
Vertical Crankshaft
Air-Cooled
Four Cycle
11.5 cu. in.
1-1/4qts.
Above
32°: SAE 30
Below
32°: SAE 5W30
Intake: .006 in.
Exhaust: .006
in.

Safety
Please read and follow all of the safety instructions in this Safety Section. Failure to comply can result in serious
personal injury or property damage.
If you have questions, or are not completely sure about any of the information
found here or elsewhere
in this Manual, please call your local Sears Service Center for assistance before you operate
your equipment.
DANGER
Cutting blades begin to rotate when the engine starts
and slow down gradually after the engine is shut off.
Do not allow hands or any other part of the body or
clothing inside the vacuum inlet, chipper chute,
discharge opening, blower deflector, or near any
moving part.
ALOOK FOR THIS SYMBOL TO
POINT OUT IMPORTANT SAFETY
PRECAUTIONS. IT MEANS -
ATTENTION!!! BECOME
ALERT!!! YOUR SAFETY IS
INVOLVED!!!
TRAINING
1. Read this Owner's Manual and
the separate Engine Owner's Manual
carefully before operating this
equipment. Be thoroughly familiar
with the controls and the proper use
of this equipment.
2. Never allow children or untrained
adults to operate this equipment.
3. Keep the area of operation clear
of all persons, particularly small
children, and pets. Keep bystanders
at least 25 feet away from the area
of operation.
4. Familiarize yourself with all of the
safety and operating decals
on this
equipment and on any of its
attachments or accessories.
PREPARATION
1. Always wear approved safety
goggles (provided) when operating
this equipment. The operation of any
powered machine can result
in
foreign objects being thrown by high-
speed rotating parts.
2. Do not wear loose-fitting clothing
or jewelry that can get drawn into the
vacuum inlet or chipper chute, or that
can get caught by moving parts.
3. Do not operate this equipment
unless the collection bag or blower
deflector is installed.
4. Do not process material through
chipper chute when equipment
is on
uneven ground.
5. Do not run engine in an enclosed
area. Engine exhaust contains
carbon monoxide gas, adeadly
poison that
is odorless, colorless, and
tasteless.
Do not operate this
equipment near buildings, windows,
or air conditioners.
6. Do not allow hands or any other
part of the body or clothing inside the
vacuum inlet, chipper chute,
discharge opening, blower deflector,
or near any moving part. Cutting
blades begin to rotate when engine
starts and slow down gradually after
engine
is shut off.
5. Before starting engine, check that
all screws, nuts, bolts, and other
fasteners are properly secured.
Replace any damaged or unreadable
warning and operating decals.
6. Wear work gloves, sturdy
footwear, and hearing protection
when operating this equipment.
7. Use extra care when handling
gasoline and other fuels. Gasoline
and its vapors are highly flammable
and explosive. To help prevent afire
or explosion:
a. Use an approved fuel container.
3
7. Before inspecting or servicing any
part of the equipment, stop the
engine and make sure that all
moving parts have come to a
complete stop. Disconnect the spark
plug wire and secure it away from the
spark plug. Be aware that rotating
blades slow down gradually after
engine
is shut off.
8.
Do not operate this equipment if
you are under the influence of alco-
hol, medication, or when tired or ill.
b. Never add fuel to arunning or a
hot engine.
c. Keep matches, smoking
materials, open flames, and sparks
away from the fuel tank and fuel
container.
d. Fill the fuel tank outdoors and
with extreme care. Never fill fuel
tank indoors.
e. Replace the caps
on the fuel
tank and fuel container and clean
up spilled fuel before starting
engine. Gas cap shall never be
removed or fuel added while
engine
is running.

1. Leave 1/2 inch air space at top of
fuel tank to
aliON for expansion of
fuel.
OPERATION
1. Before starting this equipment,
make certain that the chipper chute,
vacuum inlet, discharge opening,
and blower deflector are empty.
Disconnect spark plug wire before
making these checks.
2. Never carry passengers on this
equipment. They could fall off and
be seriously injured, or they could
interfere with safe operation.
3. Do not allow hands or any other
part of the body or clothing inside the
vacuum inlet, chipper chute,
discharge opening, blower deflector,
or near any moving part.
4. Before vacuuming, inspect the
area where the equipment is to be
used and remove all metal, bottles,
cans, or other foreign objects.
5. Do not vacuum any burning or
smoldering materials such as cigars,
cigarettes, ashes, or cinders.
6. When vacuuming or chipping, be
extremely careful that pieces of
metal, rocks, bottles, cans, or other
foreign objects are not inclUded.
7. Do not use vacuum or blower on
areas that have been recently
treated with fertilizers, pesticides, or
herbicides. Follow chemical
manufacturer's safety instructions
regarding contact with treated areas.
8. Do not vacuum flammable liquids
such as gasoline, kerosene, diesel
fuel, paint thinner, etc.
9. If equipment strikes any foreign
object or starts making an unusual
noise or vibration, immediately shut
off engine and allow all
mOVing parts
to come to acomplete stop.
Disconnect the spark plug wire and
secure
it away from the spark plug.
Then take the following steps:
a. Inspect for damage.
Safety
g. Do not store the machine or fuel
container where there
is an open
flame or spark, or where ignition
sources such as hot water and space
heaters, furnaces, clothes dryers,
stoves, or electric motors are present.
b. Replace or repair any damaged
parts.
c. Check for and tighten any loose
parts.
10. If equipment jams or becomes
clogged, immediately shut off the
engine and allow all moving parts to
come to acomplete stop. Disconnect
the spark plug wire and secure
it
away from the spark plug. Use only a
wooden stick
to clear away debris.
11. Before adding or changing any
attachments or before switching
between vacuum and blower oper-
ation stop the engine and allow all
moving parts
to come to acomplete
stop. Disconnect the spark plug wire
and secure it away from the spark
plug.
12. Keep all guards, covers, and
shields
in place and in good working
condition.
13. Always stand clear of discharge
area when operating equipment with
blower deflector installed. Material
exits at ahigh speed from the blower
deflector.
14.
Do not operate the chipper with
the blower deflector installed.
15.
Do not operate the chipper if the
chipper chute flap
is damaged or
missing.
16. Keep your face and body safely
away from the chipper chute. When
chipping, stand
on either side of
chute and keep arms perpendicular
(at a
90° angle) to chute inlet.
17.
Do not overreach when feeding
material into the chipper chute. Keep
proper balance and footing at all
times.
18. Check collection bag frequently
for deterioration or wear and replace
worn bags. Use only original-
equipment replacement bags.
4
Bags manufactured by others could
present asafety hazard.
19. Before removing and installing
collection bag, stop the engine and
allow all moving parts to come to a
complete stop. Disconnect the spark
plug wire and secure it away from
the spark plug.
20. Empty the collection bag after
each use. Decomposing debris
could generate enough heat to catch
fire.
21. Exercise extreme caution on
slopes and avoid excessively steep
slopes.
22. Never operate this equipment
on
aslippery surface.
23. Look behind and use care when
operating
in reverse.
24.
Do not allow any part of the
engine, especially around the cooling
fins and muffler to become clogged
with leaves, oil, grease, or any other
combustible material.
25. Watch for traffic when operating
near, or when crossing roadways.
26. Never leave the equipment
unattended when the engine
is
running. Stop the engine, disconnect
spark plug wire, and secure it away
from the spark plug before leaving
the equipment.
27. Use only attachments and
accessories that are approved for
use with this equipment.
28. Operate equipment only
in
daylight or in good artificial light.
29.
Do not tamper with the engine
governor settings. The governor
controls the maximum safe operating
speed and protects the engine and
all moving parts from damage
caused by excessive speed.
Request help at the nearest Sears
service location if aproblem exists.

30. This equipment is provided with
asafety interlock system which
prevents the engine from starting
unless the collection bag or blower
deflector
is installed. The system is
Safety
also designed to shut off the engine
if the operator attempts to remove
the collection bag or blower deflector
while the engine
is running. Never
attempt to disconnect or otherwise
defeat the purpose of this system. If
the interlock fails to operate properly,
shut off the engine and do not
operate this equipment until the
system
is repaired and is functioning
properly.
CUSTOMER RESPONSIBILITIES AND STORAGE
1. When equipment is stopped for
servicing, inspection, storage, or to
change
an attachment or accessory,
make sure the spark plug wire
is
disconnected from the spark plug.
Allow the engine to cool before
making any inspections,
adjustments, etc.
2. Maintain equipment and all
attachments and accessories
in safe
working condition.
3. Never perform any maintenance
while engine
is running or when
spark plug wire
is connected to spark
plug, except where specifically
instructed to do so.
4. Never store this equipment with
fuel
in the fuel tank inside abuilding
where fumes may reach
an open
flame or spark, or where ignition
sources are present such
as hot
SAFETY DECALS
Make certain that all safety decals on
this equipment are kept clean and
in
good condition. The decals are
shown on Page
31 of this Manual.
water and space heaters, furnaces,
clothes dryers, stoves, electric
motors, etc.
5. Allow engine to cool before
storing
in any enclosure.
6. Store gasoline in acool, well-
ventilated area, safely away from any
spark- or flame-producing
equipment. Store gasoline
in an
approved container, safely out of the
reach of children.
7. Use only original equipment
replacement parts. Parts
manufactured by others could
present asafety hazard even though
they may fit
on this equipment.
5
8. Store this equipment where
children will not have access.
Always disconnect the spark plug
wire from the spark plug to prevent
accidental starting.
9. Check collection bag frequently
for deterioration or wear and replace
worn bags. Use only original
equipment replacement bags. Bags
manufactured by others could
present asafety hazard.
10. Refer to the Engine Owner's
Manual and to "Off Season Storage"
in this Manual for important storage
instructions
if equipment is to be
stored for an extended period.

Accessories
VACUUM HOSE
The optional vacuum hose attachment allows you to
extend the reach of the machine by 10 feet to easily
reach in, around, under and behind bushes, shrubs,
trees, fences, lawn furniture, etc. This attachment is
available at your Sears Service Center or Sears Retail
store. If you purchased avacuum hose with the
ChipperNac, you will find it packaged
in aseparate
carton.
Instructions for installation and use of the vacuum hose
are presented
in this Manual. See "Vacuum Hose
Operation" on Page 16.
Engine Accessories
Optional vacuum hose and baffle plate.
(Stock No. 71-85689)
Engine accessories such as gas cans, engine oil, and replacement spark plugs are also available at your local Sears
Service Center and most Sears Retail stores.
Unpacking the Vacuum/Blower/Chipper
UNPACKING INSTRUCTIONS
1. The following items are contained in the shipping
carton and shown
in Figure 1:
(A) ChipperNac
(B) Safety Goggles
(C) Blower Deflector
(0) Collection Bag
Figure 1: Contents of shipping carton.
6
2. Check for missing or damaged parts. If any parts are
missing or damaged, contact your local Sears Service
Center or Sears Retail store for assistance.
IMPORTANT: Motor oil and gasoline must be added to
the engine before the engine is started. The procedure
for adding motor oil is on Page
9. Instructions for adding
gasoline are
on Page 11.
NOTE: All references to the front, rear, left and right of
the machine are determined as follows:
The inlet cap for the optional vacuum hose is located
on
the front of the machine. The discharge opening is at
the rear. The left and right sides are determined by
standing at the rear of the machine when the handlebars
are
in the "vacuum" position.
B
I
~

Assembly
ASSEMBLY FOR WALK-BEHIND VACUUMING
Your machine has been partially assembled at the
factory. The remaining assembly steps, which are
described below, should be done on aclean, level
surface.
This assembly procedure readies the machine for use for
walk-behind vacuuming. Instructions for converting the
machine for other uses begin on Page 16. Remember to
add oil to the engine before starting the machine. See
"Add Oil to Engine" on Page
9.
CAUTION
To prevent personal injury or property damage, do not
connect the spark plug or start the engine until all
assembly steps are complete and you have read and
understood the safety and operating instructions in
this Manual.
STEP 1: Install and Adjust the Handlebars
NOTE: The machine has two handlebars positions. For walk-behind vacuuming, using the chipper, or for using the
optional vacuum hose, the handlebars must
be in the "vacuum" position. Because the handlebars are shipped in the
"blower" position for packaging considerations, the first assembly step is to change the handlebars to the "vacuum"
position as described below and shown
in Figure 2.
A. Tighten the knobs (B).
B. Squeeze the handlebars ends
(C in Figure 2inset) toward the center of the machine to release them from the
notches
in the mounting brackets and swing the handlebars up over the machine toward the rear.
C. Position the handlebar ends
in the "vacuum" notches of the brackets (0 in Figure 2inset).
O. Unfold the handlebars until the channels on the upper left and right handlebars are aligned with the lower
handlebars (A).
~ Handlebars Extended
in Vacuum Position
Figure 2: Handlebar position for vacuuming.
7

Assembly
STEP 2: Install or Remove Collection Bag
For walk-behind vacuuming, install the collection bag as
described below. To empty the bag or to convert the
machine for use with the blower deflector, remove the
collection bag
as described in Step B.
DANGER
• Before installing/removing the collection bag, stop
the engine and make sure that all moving parts have
come to a complete stop. Disconnect the spark plug
wire and secure it away from the spark plug.
• Check the collection bag frequently for
deterioration and wear and replace worn bags.
A. Install the Collection Bag
1. Stop the engine and make sure that all moving
parts have come to acomplete stop. Disconnect the
spark plug wire and secure it away from the spark
plug.
2. Make sure the bag (A in Figure 3) is zipped.
3. Place the collection bag straps over the handlebars.
4. Line up the tabs on the bag adapter (B) with the slots
in the discharge opening (C) and slide the bag adapter
down all the way into the slots.
NOTE: The rod (0) on the inlet adapter
is part of the
machine's safety interlock system. Make sure that the
rod fits securely
in the slot (E) in the safety interlock
switch. See Figure 3below and read the description of
the Safety Interlock System on Page
9.
B. Remove the Collection Bag
1. Stop the engine and make sure that all moving
parts have come to acomplete stop. Disconnect the
spark
plug wire and secure it away from the spark
plug.
2. Slide the bag adapter (B) out of the slots in the
discharge opening.
3. Hold the collection bag with the inlet opening upright
so that material does not fall out, and slide the straps off
the handlebars.
4. Unzip the collection bag and empty it by shaking the
bag gently to remove all debris.
5. Zip the collection bag and re-install it if the machine
will
be used for additional vacuuming, or install the
blower deflector as described on Page 19.
BAG MAINTENANCE TIP: Keep the bag clean by
occasionally washing it (by hand) with mild soap and
water. Aclean bag improves air flow and results
in
better vacuuming performance. Do not wash the bag in
an automatic washer. Do not use acleaner which
contains bleach. Allow the bag to dry thoroughly before
storing.
Figure 3: Install bag.
8

Assembly
Safety Interlock System
Your machine is equipped with aSafety Interlock
System (see Figure
4) which prevents the engine from
starting unless the collection bag or blower deflector
is
installed. The rod (A in Figure 4) must be positioned as
shown in the slot (B) in order to start the engine.
The system also stops the engine
if the operator
attempts to remove the bag or deflector while the engine
is running. When the rod
is not in place, acircuit closes
to ground out the engine.
If the safety interlock system fails, shut off the engine
and do not operate the machine until the system has
been repaired. Contact your local Sears Service Center
for repairs.
WARNING
To avoid personal injury or property damage, do not
operate this machine unless the safety interlock
system is functioning properly.
STEP 3: Add Oil to Engine
A. The machine was shipped without oil in the engine.
The engine requires approximately 21 ounces of oil.
B. Use only aclean, high quality detergent oil rated with
the
A.P.1. service classification of "SG." Select oil
viscosity grade according to expected temperature when
operating:
•For use at temperatures above 320
F, use SAE 30 oil.
•For temperatures below 320
F, use SAE 5W30 oil.
NOTE: Although multi-viscosity oils (5W30, 10W30,
etc.),
improve starting in cold weather, these multi-
viscosity oils will result in increased oil
consumption when used above 320 F. Check your
engine oil level more frequently to avoid possible
engine damage from running low on oil.
C. With the machine on level ground, remove the
dipstick (A, Figure
5) and place it on a clean surface.
D. Using a clean funnel, slowly add oil to the dipstick
hole. While adding oil, frequently reinstall dipstick (screw
dipstick down securely) to check oil level. Wipe dipstick
with a clean cloth before reinserting each time. Fill to the
"FULL" mark on dipstick.
DO NOT OVERFILL!
E. Reinstall the dipstick securely.
STEP 4: Check All Nuts and Bolts for Tightness
Check all nuts and bolts for tightness following assembly
and according to the schedule given
in the section which
describes "Customer Responsibilities"
on Page 27.
9
Handlebars
removed for
clarity.
Figure 4: Safety Interlock System (shown with blower
deflector chute).
NOTE: Change the oil after the first two operating
hours. See "Changing Oil"
on Page 23 in the "Customer
Responsibilities" section of this Manual.
Figure 5: Remove dipstick to add oil to engine.
NOTE: Do not overtighten the bolts which attach the
engine mounting plate to the housing. DAMAGE TO
THE HOUSING COULD RESULT.

Operation
FEATURES AND CONTROLS
Figure 6identifies the following key features and controls
on your machine:
(A) Collection Bag
(8) Engine Control Lever
(C) Engine Primer
(0) Air Cleaner
(E) Chipper Chute
(F)
FuelTank
(G) Recoil Starter Rope
(H) Blower Deflector
(I) Safety Interlock Rod
(J) Vacuum Hose (optional)
(K) Baffle Plate (used with optional vacuum hose)
(L) Vacuum Inlet Cap
(M) Spark Plug
(N) Vacuum Height Adjustment Lever
DANGER
Rotating Cutting Blades Will Cause
Serious Personallnjuryl
Do not allow hands or any part of the body or clothing
inside the vacuum inlet, chipper chute, discharge
opening, or blower deflector opening when the
engine is running.
Before inspecting or servicing any part of the
machine, stop the engine and make sure that all
moving parts have come to a complete stop.
Disconnect the spark plug wire and secure it away
from the spark plug.
NOTE: The Shredder Screen is not shown in Figure 6.
Information on removing and installing the Shredder
Screen
is found on Page 22.
Figure 6: Features and Controls.
10

Operation
ENGINE OPERATION
STEP 1: Add Gasoline to the Fuel Tank
Fill the fuel tank with fresh, clean, unleaded regular
automotive gasoline. (Leaded regular and unleaded
premium grades of gasoline are acceptable substitutes.)
oDo not mix oil with gasoline.
oDo not use gasoline left over from last season or
stored for long periods.
oDo not use gasoline containing methanol (wood .
alcohol). Gasoline containing up to 10% ethanol or grain
alcohol (Gasohol) may be used but requires special care
when the engine
is unused for extended periods. See
the Engine Owner's Manual for Gasohol storage
instructions.
DANGER
Gasoline is highly flammable and its vapors are
explosive. To prevent personal injury or property
damage:
• Do not add fuel if the engine is running or still hot
from recent operation. Allow the engine to cool for at
least three minutes.
• Do not fill the fuel tank indoors. After filling, wipe
up any spills and move the machine away from
gasoline fumes before starting the engine.
• Do not allow open flames, matches, or smoking in
area.
To Add Gasoline
A. Stop the engine and wait for all moving parts to
come
to acomplete stop. Disconnect the spark plug
wire and secure it away from the spark plug. Allow
the engine and muffler to cool for at least three
minutes.
B. Clean area around fuel fill cap and remove cap (A in
Figure 7) from fuel tank.
C. Use a clean funnel to fill the fuel tank to 1/2 inch
below the bottom of the filler neck (to provide room for
fuel expansion).
D. Re-install the fuel fill cap securely and wipe up any
spilled gasoline.
STEP 2: Pre-starting Procedures
IMPORTANT: Review the Safety Section and read this
section
in its entirety before starting the engine.
With the spark plug wire disconnected from the spark
plug, perform the following pre-starting procedures as
required before each start-up:
oPlace the machine outdoors on level ground.
o Be sure that all bystanders are at least 25 feet away
from the area of operation.
oCheck that the chipper chute, vacuum inlet, or
discharge deflector are empty (after initial use of the
machine).
oCheck that all screws, nuts, bolts, and other fasteners
are properly secured.
ORe-attach the spark plug wire before starting the
engine.
11
Figure 7: Fill fuel tank.
DANGER
To Prevent Personal Injury or Property Damage
• Cutting blades begin to rotate when the engine
starts and slow down gradually after the engine is
shut off. Do not allow hands or any other part of the
body or clothing inside the vacuum inlet, chippe~
chute, discharge opening, blower deflector opemng,
or near any moving part.
• Do not run the engine in an enclosed area. Engine
exhaust contains carbon monoxide gas, a deadly
poison that is odorless, colorless and tasteless. Do
not operate this equipment near buildings, windows,
or air conditioners.

Operation
STEP 3: Starting the Engine
A. Put on safety goggles and work gloves. Do not wear
loose fitting clothing or jewelry that can get caught
in
moving parts.
B. Move the Engine Control Lever (A, Figure 8) all the
way to the
right (toward rabbit position) until it stops.
C. When starting acold engine, firmly push primer (B,
Figure
8) five (5) times before trying to start the engine.
(This step
is not required when starting an engine which
has already run for afew minutes.)
D. Stand at the left front of the machine. Place one foot
against left front wheel to stabilize the machine.
E. Look behind you to make sure there are no obstacles
in the way. Grasp the Starter Rope Handle (C) and pull
handle quickly. Do not allow starter rope to snap back.
NOTE:
In cool weather, repeat primimg step if
necessary.
In warm weather, over priming may cause
flooding so that the engine will not start.
If the engine is
flooded, wait afew minutes before attempting to start it
and do
not repeat the priming step.
F. Leave the Engine Control Lever at the FAST (rabbit)
setting. FAST
is the recommended setting for all
vacuuming and chipping operations.
GENERAL OPERATION
STEP 4: Stopping the Engine
A. Move the Engine Control Lever all the way to the left
(toward turtle position) until it stops.
B. Listen for all moving parts to come to acomplete
stop. There
is an audible tone when the cutting blades
are slowing down.
Figure 8: Starting the engine.
Understanding how your machine works will help you achieve the best results when using the ChipperNac. Read the
following explanation before using the machine and see Figure 9which shows the internal workings of the ChipperNac.
(A) Chipper Chute
(B) Chipper Cutting Blade
(C) Shredder Screen
(0) Processing Chamber
(E) Fan Blade
(1 of 4)
(F) Discharge Opening
Figure 9: Cutaway view. (Blower deflector removed for clarity.)
12

VACUUMING OPERATION
Operation
CHIPPING OPERATION
Vacuuming operation begins in the processing chamber
where the blades attached to the flywheel spin at up to
3600 RPM, creating apowerful suction. Material enters
the processing chamber from beneath the machine
during walk-behind vacuuming and during use of the the
blower deflector. Material enters from the hose during
use of the vacuum hose. The material is then processed
through the chamber (and screen if installed) and exits
from the discharge opening into the collection bag or is
propelled out through the bbwer deflector.
Chipping operation also takes place
in the processing
chamber. Branches fed down through the chipper chute
enter the processing chamber where ahardened steel
chipper blade, mounted
on the spinning flywheel, slices
the material into small chips. The chips are then
propelled out from the processing chamber through the
discharge opening into the collection bag.
VACUUMING AND CHIPPING GUIDE
The chart below lists some commonly available materials that can be processed using your ChipperlVac. This chart is
only intended as ageneral guideline. For complete vacuuming and chipping operating instructions, please read this
entire Operation Section.
MATERIAL WALK·BEHIND VACUUMING VACUUM HOSE CHIPPER
or BLOWER DEFLECTOR
Dry leaves Yes (1) Yes (2) No
Damp leaves Yes (1,2) Yes (2) No
Acorns & pine needles Yes (2,3) Yes (2)
No
Grass clippings Yes (1,2) Yes (2) No
Vines No No Yes (cut into very short
lengths)
Cornstalks No No Yes (cut off root
ball)
Small branches
No No
Yes
(1-1/2" max. dia.)
Light brush
No No Yes
1 - Adjust vacuum inlet height up or down as needed for walk-behind vacuuming.
2-Remove the shredder screen to prevent clogging and improve air flow.
3 - Remove screen and adjust vacuum inlet height to lowest position.
MATERIALS TO AVOID
oMETAL
oROCKS
oGLASS
oPLASTIC
oOTHER NON-ORGANIC FOREIGN OBJECTS
oDIRT &SAND (WILL QUICKLY DULL
CHIPPER BLADE)
oSTICKS AND TWIGS (WILL CLOG VACUUM INLET
OR HOSE -PLACE
IN CHIPPER CHUTE ONLY)
13

Operation
Figure 11: Vacuum Height Adjustment Lever.
Figure 10:
Adjust handlebar position to "vacuum."
A
(/
I (
I \
I
Install the Shredder Screen for vacuuming dry materials.
Remove the screen before vacuuming damp leaves, pine
needles, or grass clippings. Screen installation and
removal are described
on Page 22.
If the machine was previously used with the optional
vacuum hose, remove the hose and baffle plate (see
Pages 16 through 18). Install the vacuum inlet cap.
STEP 4: Remove the Vacuum Hose and Baffle Plate
STEP 5: Install the Shredder Screen
STEP 3: Install the Collection Bag
Install the collection bag as described in Step 2on
Page
8.
DANGER
Rotating cutting blades will cause serious injury!
Before removing, adjusting, or installing a vacuuming
attachment, stop the engine and make sure that all
moving parts have come to a complete stop.
Disconnect the spark plug wire and secure it away
from the spark plug.
WALK-BEHIND VACUUMING
NOTE: The following assembly procedure also prepares
the machine for using the chipper. For more information
on using the chipper, see Page 20.
STEP 2: Adjust the Vacuum Inlet Height
The vacuum inlet height can be adjusted to six different
settings
in approximately 1/2" increments. These
settings allow inlet suction to
be adjusted for varying
needs. For example, when vacuuming deep layers of
leaves, adjust the vacuum inlet height at the front of the
machine to its highest setting as described below (see
Figure 11):
NOTE: The adjustment of the vacuum inlet height (up or
down) should be performed as needed, depending
on
the terrain and on the materials being vacuumed.
A. Stop the engine, disconnect the spark plug wire
from the
spark plug, and make sure that all moving
parts have come to acomplete stop.
B. Squeeze the adjuster lever (A in Figure 11) toward
the wheel to disengage the adjuster pin from the hole
in
the height adjuster bracket.
C. Rotate the adjuster lever toward the rear (discharge
opening) of the machine to raise the height and then
release the adjuster lever so that the adjuster pin
engages the selected hole
in the bracket. Rotate the
lever
in the opposite direction to lower the inlet height.
D. Be sure that both wheels are adjusted to the same
height.
STEP 1: Move Handlebars to Vacuuming Position
This step describes changing the handlebar position
from the blower to the vacuuming position. If the
handlebars are already in the vacuuming position,
ignore this step and go to Step 2.
A. Stop the engine and make sure that all moving
parts have come to acomplete stop. Disconnect the
spark plug wire and secure it away from the spark
plug.
B. Remove the blower deflector as described on
Page 19.
C. Squeeze the handlebar ends, swing the handlebars
over the machine toward the rear, and release the
handlebars
in the "vacuum" notches (A) as shown in
Figure 10.
14

Operation
STEP 5: Start the Engine
A. Perform the engine "Pre-starting Procedures" on Page 11. Make sure you are wearing safety goggles.
B. Be sure that you have added oil and gasoline to the engine. Start the engine as described on Page 12.
Figure 12: Machine prepared for walk·behind vacuuming.
DANGER
To Prevent Personal Injury or Property Damage:
• Cutting blades begin to rotate when the engine
starts and slow down gradually after the engine is
shut off. Do not allow hands or any other part of the
body or clothing inside the vacuum hose opening,
blower discharge opening, chipper chute, or near any
moving part.
• Before inspecting, cleaning, or servicing the
machine, stop the engine and make sure that all
moving parts have come to a complete stop.
Disconnect the spark plug wire and secure it away
from the spark plug.
• To avoid personal injury or property damage, do not
operate this machine for vacuuming unless the
collection bag is installed.
• Review all of the rules in the Safety Section of this
Manual.
IMPORTANT
Spring Operation:
Spring clean-up can be especially difficult! Leaves
and other debris may have matted down over the
preceding months. For best results when vacuuming
this type of debris: remove the screen, lower the
vacuum inlet, and walk slowly. You can even use the
machine as you would avacuum cleaner, moving
it
back and forth over particularly stubborn debris, or
loosen the debris with afew quick passes of arake,
and then vacuum.
Fall Operation:
Don't try to vacuum too much at one time! Optimum
performance
is obtained when leaves are vacuumed
once aweek, or even more often at the peak of leaf-
drop. Keep ahead of the leaves.
In the long run, this
is the easiest and fastest way to deal with all of your
Fall leaves.
STEP 6: Walk-Behind Vacuuming Operation
NOTE: Figure 12 shows the ChipperlVac in use for
walk-behind vacuuming. Check that the following
adjustments have been made
if the machine was
previously used for another type of operation:
VCollection bag installed and zipped. See collection
bag installation instructions
on Page 8.
VBaffle plate off (provided with optional vacuum
hose kit only). See baffle plate removal instructions
on
Page 17.
VVacuum inlet cap installed.
VHandlebars positioned toward the rear of the
machine. See handlebar adjustment instructions
on
Page 7.
Walk-Behind Vacuuming Operation
A. Walk slowly behind the machine to allow the
machine to draw the debris off the ground.
B.
In certain conditions it may be necessary to make
two passes over the area.
C. Be sure to frequently empty the collection bag as
described
on Page 8.
D. To stop the machine, move the Engine Control Lever
all the way to the
left (toward turtle position) until it stops.
E. Listen for all moving parts to come to acomplete
stop. There
is an audible, distinct sound produced as
the cutting blades slow down. Wait for this sound to
stop before inspecting, servicing, or changing the
operating mode of the machine.
•
-
--
--c::=-- -
? -
-
--
-
15

Operation
Walk-Behind Vacuuming Tips and Hints
oAvoid overfilling the vacuum inlet which can lead to
clogging, especially if the material is wet and soggy.
Asteady, smaller flow of materials provides the most
effective results.
oWork from the outer edge of leaf piles and gradually
work inward.
o Mow the lawn before the leaves fall to make
vacuuming easier. Keeping your lawn a bit shorter
in the fall will help a great deal.
oCheck and empty the collection bag frequently.
oIf possible, vacuum frequently to avoid deep piles of
leaves from accumulating
on the lawn.
oUse care when vacuuming near plantings,
ornamentals, mulches, stone or gravel.
oUse the blower deflector to blow the leaves into long
rows before walk-behind vacuuming if the leaf cover is
sparse.
oAvoid vacuuming long twigs and sticks which are
likely to jam or clog the vacuum inlet. Instead, process
twigs and sticks using the chipper chute as described on
Page 20.
IMPORTANT:
If the machine jams or clogs, immediately shut off the engine-
and disconnect the spark plug wire from the spark plug. Refer to Page 21
for safety precautions and detailed instructions on how to remove jams and
clogs.
VACUUM HOSE OPERATION
NOTE: The optional Vacuum Hose is designed for
stationary vacuuming operation only.
STEP 1: Move Handlebars to Vacuuming Position
See the instructions for moving the handlebars given in
Step 1on Page 14.
STEP 2: Remove the Shredder Screen
To obtain best performance and minimize clogging,
remove the screen before using the vacuum hose.
STEP 3: Install Collection Bag
Install the collection bag as described in Step 2on
Page
8.
16
DANGER
To Prevent Personal Injury or Property Damage
• Cutting blades begin to rotate when the engine
starts and slow down gradually after the engine is
shut off. Do not allow hands or any other part of the
body, or clothing inside the vacuum hose opening,
blower discharge opening, chipper chute, or near any
moving part.
• Before inspecting, cleaning, or servicing the
machine, stop the engine and make sure that all
moving parts have come to a complete stop.
Disconnect the spark plug wire and secure it away
from the spark plug.
• To avoid personal injury or property damage, do not
operate this machine for vacuuming unless the
collection bag is installed.
• Review all of the rules in the Safety Section of this
Manual.

Operation
STEP 4: Install Baffle Plate
The baffle plate, which is included only with the optional
vacuum hose, concentrates the suctioning power of the
machine into the hose by blocking the air flow
underneath the front of the machine. To install the baffle
plate, position the plate underneath the front of the deck
and snap it into place as shown
in Figure 13.
Baffle Plate Removal
To remove the baffle plate, grasp the tabs on each side
of the plate, press outward, and remove the plate.
STEP 5: Remove Vacuum Inlet Cap and Install
Hose
A. Remove the vacuum inlet cap by twisting the cap
counterclockwise approximately 1/4 turn until the bar
on
the cap is aligned with the arrow at the REMOVE
position. Lift the cap off the inlet opening. Do
not
misplace the vacuum inlet cap.
B. Line up the tabs on the hose with the slots in the
vacuum inlet opening and insert the hose. Turn the
hose approximately 1/4 turn clockwise until it is
in the
LOCK position. See Figure 14. (The hose support
handle should now be
on the top of the hose.)
C. The machine is now properly assembled for use with
the vacuum hose.
17
Figure 13: Install the baffle plate.
Figure 14: Remove vacuum
inlet cap and Install vacuum
hose.

Operation
STEP 6: Using the Vacuum Hose
A. Follow the "Pre-starting Procedures" on Page 11.
Make sure you are wearing safety goggles.
B. Start the engine as described
on Page 12.
C. Move the machine to the vacuuming site and park
the machine
on level ground.
NOTE: To avoid damaging the hose, drape the hose to
the right side of the machine when moving the machine
between vacuuming sites.
Do not allow the hose to
touch the engine.
D. Use the handle attached to the hose to easily
maneuver the hose around corners, underneath bushes,
etc. See Figure 15.
E. To stop the machine, move the Engine Control Lever
all the way to the left(toward turtle position) until it stops.
F. Listen for all moving parts to come to acomplete
stop. There is
an audible, distinct sound produced as
the cutting blades slow down. Wait for this sound to stop
before inspecting, servicing, or changing the operating
mode of the machine.
Tips for Using the Vacuum Hose
oWhen vacuuming, move the hose slowly from side to
side.
DTo avoid clogging, do not vacuum too much material
at once. Vacuum some material, let the hose "breathe,"
and then vacuum some more.
oAlso keep the hose as straight as possible to prevent
clogging.
o Do not attempt to move the machine by pulling on the
hose. This could damage the hose and cause the
machine to move unsafely.
IMPORTANT: If the machinejams or clogs,
immediately
stop the engine and make sure that all
movingparts have come to acomplete stop.
Disconnect the spark
plug wire and secure it away
from the
spark plug. Refer to Page 21 for safety
precautions
and detailed instructions on how to
remove jams
and clogs.
Figure 15: Using the vacuum hose.
18