52 owner's

manuah

MODEL

NO.

636.796670

CAUTION:

Read Rules for

Safe Operation and instructions

Carefully e Assembly

.

Operation

BUSHWACKER

o Maintenance o Repair Parts

Sears, Roebuck and Co., Chicago, IIL 60684 U.S.A.

PRINTED IN JAPAN 5209500101 4/89

TWO

YEAR

LIMITED WARRANTY

BUSHWACKER

ON

636.796670

CRAFTSMAN

Fo_

two

years from date o{

purchase when this

BUSHWACKER is maintain6_,

tubricated,

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 blades, spark plug_ and air cleaner: which are expend_He part., and become worn during normat

USe,

t# this BUSHWACKER

}s used for commercial or rental purposes, this warranty applies for only 30 dayt from the data of purchase.

WARRANTY SERVICE

IS AVAILABLE

BY

CONTACTING

THE

NEAREST

SEARS SERVICE CENTER/DEPART-

MENT tN THE UNITED STATES. This warranty applies onty while this product is in use in the United Statas_

This warranty gives yOU specific tagal tieht_= and you may atso have other

rights which

very from scare to state,,

SEARS,

ROEBUCK

AND CO

DEPT, 698/731A

SEARS "TOWER

CHICAGO,

ILLiNOiS 60684

SAFETY RULES AND PRECAUTIOHS

3.

4

5

6

,

Before each operation, make sure that the screws are not

loose or missing, that the components are not damaged, and that the blades are not

chipped off or cracked.

If a

blade is chipped or cracked replace it with a new one,

Do not attempt engine or blade

adjustments

or refueling before allowing the engine and mufffer to coo!, a. [30 not remove the fuel tank cap while the engine is running or when it is still hal b, Clean off fuel tank cap area before refueling..

Do not smoke while refueling_

c

Take care not to spill any fuel.

If it is spilled, wipe it

off

d Never operate on gasoline only As this engine is of

2-cycle type, use mixed fuel whose mixture ratio is

t6:1

(1 Bat gasoline to 8 oz. oil) and a proper lubrication oil such as Sears Catalog Number 36555.

Do not operate the machine when your physical

condi-

tion is not good.

Never touch the plug cap during opera,.

lion to protect yourself from etectric shock..

Never operate

the machine wherever

ventilation

is not enough,

Before starting the engine, make sure that the blade does not touch anything In startup of the engine, be careful not to turn the blade toward bystranders.

Posit_on

BUSHWACKER securel% (In startup, place 8USHWACK-

ER in a level place so as to prevent the blade from moving )

Wear safe clothes (safety shoes, goggles,

earmuffs,

gloves, etc ) Never wear loose clothing or jewelry while operating your BUSHWACKER

7.

Do not admit any persons or animals within the working area (30 feet or less from the site),. When plural operators

work together in the same place, maintain at least a

30 feet distance from each other and exchange warning shouts if necessary° Pay special attention to keep by.

standers, especially children away from the working site.

8 Stop the engine and pay special attention to the blades

whenever you carry the BUSHWACKER from one place to the next before and after operation.

9.

Never let any child handle the machinm

!0_

Use BUSHWACKER only for cutting of young trees, grass, etc, of which diameter is 0°2" or tess, Never use

BUSHWACKER to cut motets or other hard materials,

11, Never operate BUSHWACKER in a bad weather condi-

tion (rain, snow, strong wind,

abnormal

atmospheric temperature, etc.)

12_ Keep this manual in place so that one can refer to it repeatedly for safety operation and to teach possible users how to operate the machine,

CAUTION: The operation of any BUSH-

WACKER

can

result in

Foreign

objects being thrown into the eyes, which

can

result in severe eye damage.

Always

wear

safety

glasses or eye shields

before

com-

mencing power tool

operation.,

We re_

commend Wide Vision Safety Mask

for

over

spectacles

or

standard safety!

glasses, available at

Sears Retail or Catalog

Stores,

KNOW YOUR BUSHWACKER

Your however, new B[JSHWACKER even with has been carefully packed at the factory to prevent damage during shipping and storage, the best of preventative check out procedures listed below: measures, damage does sometimes occur It is recommended that you follow the

Remove all items from the carton, lay them out and check the parts Io be sure that you have everything required for

assembly.

Also check carefully for any visible damage.

(IN THE EVENT THA'F SOMETHING IS DAMAGED OR MISSING

OR BOTH, NOTIFY YOUR i

SEARS STORE IMMEDIATELY,)

You should familiarize yourself with the various parts of your BUSHWACKER the unit, Refer to drawing below.

before attempting to assemble or operate

SPECIFICATIONS

TYPE

DISPLACEMENT u_ I CARBURETOR z l FUEL TANK

_ !CAPACtTY

SPARK PLUG

LUBRICATION

J

DRYWEIGHT

DIMENSION

2 cycle air-cooled

2013 cc 1i,24 Cu' In,)

I OVERALL LENGTH j 0.98"

O ,p.ragm

..................

17,5 UoSo ff. oz,. (0°5£)

NGK BM7A or CHAMPION CJ 6.

CUTTING STROKES 32°2 times/see (8000 rpm} i ENGINE RPM 8000 rpm

....... PER MINUTE

DRIVE SYSTEM

Fuel oil Mixed 16 to 1

CLUTCHTYPE Dry Centrifugal

(1 gal. gasoline to 8 oz, oil) t0.5

ibs (4.8 kg)

CLUTCH ENGAGE.

MENT

3800 rpm -+200 rpm

35.5 × 8,7 x 8,6 in,

BLADE DRIVE Double cam drive

"SEARS CATALOG NUMBER-36402

STARTLER KNOB

START/STOP SWITCH

ENG

FRONT HANDLE

TH ROTTLE

LEVER

UPPER BLADE

GUIDE P_T i

LOWER BLADE

REAR HANDLE

FUEL TANK

SHIELD

* Specifications are subject to change without notice,

PREPARaHG FOR OPERATaON

Fuel and oil mixture

inspect

the fuel tank and flit with clean, fresh fuel of the proper mixture This engine

requires

a mixture of t6 parts gasofine to t part oil (1 gal gasoline to 8 oz oil) Use 71-36555 b_vo cycle engine oi!.

Craftsman Engine Oil or a high grade

WARNING: Experience indicates that

alcohol

blended fuels

{called gasohot or using ethanol or methanol) can attract moisture which leads to separation during storage Acidic gas can damage and formation the fuel of acids system of an engine while in storage

To avoid engine problems, the fuel system should be emptied before storage for 30 days or longer.

Drain the gas tank, start the engine and let it run until the fuel lir_es and carburetor are empty,.

Use fresh fuel next season See Storage Instruct{arts for additional information

Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur.

DO NOT MIX GASOLINE AND OIL DIRECT-

LY tN THE ENGINE FUEL TANK,

IMPORTANT: instructions the engine

Failure could result to follow in proper serious fuel damage mix to

CAUTION:

Nhen preparing fuel mixture mix only the amount needed for the job you are to do Do not use fuel mixture that has been stored longer

than

two

(2}

months Fuel mixture stored longer than [his will cause hard starting and poor iperformance tf fuel mix has been stored longer t:han this itime it should be replaced and filled with a fresh mixture.

CAUTION!

NEVER

NEVER over Fill Fuel Tank add fuel to the tank in a closed un-ventilated are&

DO NOT add fuel to this unit near an open fire or sparks.

to start BE SURE to wipe off spilled fuel before attempting the engine,

DO NOT attempt to refuel an extremely hot engine.

Check points before operation

CHECK for loose bolts, nuts and fittings

Clean the air lifter of all dirt, etc before the operation_

PRSCAUTIONS DURSNG OPERATION

2.

3

4

If the blades have stopped on account of a branch caught during the trimming, and eliminate the branch.

be sure to stop

Refrain from the engine cutting too hard or too thick a branch (over ¼°' in diameterL

When the machine is running, never touch the blades

Never point the blades toward a person.

Hold 8USHWACKE R firmly with both hands.

The engine speed must not be excessive but iust enough to do the cutting

5.

To avoid a burn, do not touch the engine

during

the operation or immediately after

stopping

the englne_

Handle the engine after it is completely cooled.

8

6

7.

Never operate BUSHWACKER standing on tiptoe on

Never use it while unstable

climbing

ground or a ladder,

Do not use the 8USHWACKER continuously for a tong time.

It is. normal tO take a break of 10 to 20 minutes after every 50_minute operation.

Never leave the 8USHWACKER running unattended,

9 If there is any trouble during operation, be sure to stop the engine first.

(Move the switch to STOP.}

STARTINCI

_,ND

STOPPING

1.

When

starting

(Figure 1 ) the engine, set the

switch

to START,

Figure

1

2_

The choke control is a "Lever" type (See. Figure 2L To choke the engine, push the choke lever to "Close" position.

NOTE: If the

engine

is warm, it may be started with the

choke

lever mid-way

between

"OPEN" and "CLOSE", depending on the individual engine.

Figure

2

Switch

3.

Puli the throttle lever a little,

and

lock

(Figure 3} the throttle push the throttle lever at the starting position.

knob without a load, otherwise the engine will run at a high speed reducing engine life.

Stopping

the

Engine

I

2

Reduce the engine rpm to idle by releasing

Set the stop switch to stop. (Figure 1) the throttle

Blade sharpening

If the edges are rounded and do not cut well any more,

grind

oft = only the shaded

portions,

Do not

grind the contact

_urfaces

(sliding surfaces)

of the top and bottom edges, (Figure 5}

Figure 3

4, Pull the recoil

starter

several times_ (At this time, hold the machine

(Figure 4) securely so as to keep it fixed.)

The carburetor is no'. filled with fuelo Pull the starter 7 to

8 times to feed up fuel from tank to carb_retor.

Caution:

Never let go of the starter rope from its fully extended state. Return the starter rope to its original position while holding it securely.

-- Be careful not to break the starter rope,

Disk grinder

\

c_oss zectia

Holding

the disk grinder

at a

45 ° angle,

9rind

the edge aff

to

the dotted

line to

sharpen

_he rounded tip,

Figure 5

Note:

1) Before grinding, be sure to secure the blade

firmly

2) Wear gloves,protective glasses,etc_

3) An edge ground too much at a time or ground many times will loose its hardened layer, it

becomes rounded

and dull very quickly in

use° Order replacement blades from Sears Re- pair parts.,

Figure 4

5.

After s_arting, open the choke lever by degrees to the full and reset the throttle lever to the low speed, while check..

ing the engine operating state.

Caution:

tn starting of the engine and during

operation,

be fully careful to keep bystanders or obstacles off the operating

sideand confirm

safety requirements for operatlo n.

6.

After starting the engine,

warm

up the engine

(for about

5 minutes at medium speed).

Immediately after starting, speed up the engine slowly Never open the throttle fully

Adjustments

SPARK

PLUG MAINTENANCE -

If the spark plug

electrode area has an excess

of

carbon

buildup, the efficiency

REMOV_

CLEANER

of the plug

will

be seriously

THE CARBON WITH A SPARK reduced..

PLUG

OR WIRE BRUSH

After

cleaning

ELECTRODE

the

spark

GAP TO 024-028.

,,plug

RESET THE

Carburetor

Proper adjustment of the carburetor is very important to the operation carefully of ad)usted this engine.

at the

The factory

carburetor

and therefore has been

should

not require any further

adiustmenL

Adjustment

of Engine Idling

{f the blade happens to run in idling, adjust the cable adjuster of the throtde wire to stop blade movement in idling_

_ILADI_

ADaUSTM_-_T

(Performed

with engine stopped,)

The blades wear with use when you notice a decrease in

cutting performance adjust the blades as follows°

Upper blade

Cross-sectional view of blades

Figure 6

STORAGE

AFTER

OPERATION

1

Clean every part, repait faulty sections, and apply a thin coat of oil on metal parts to prevent rusL In cleaning the machine, always use a dean cloth, Never use strong

solvents,

such as gasoline

2,

if the BUSHWACKER will not be used for

a iong

period of time, drain the fuel from the tank, then start the engine and keep the engine running until it consumes all the fuel taft in the carburetor.

3.

Store the BUSHWACKER in a clean and dry place.

Always keep children away from the machine.

Remove the spark plug.

inject a smell amount

of engine

oil through the

spark

piug hole.

Then pull the recoil starter a few times to put a thin coat of oil on the cylin.. der..

Install the

spark

plug again when

the

piston has stopped at a top dead center.

It

is important to prevent gum deposits from forming essential fu[:] system parts such as the carbure[or_ fuel filter, in fuel hose, or tank during storage Also,

experience

indicates

that alcohol h_er_ded_uels (caUed gasohol or using ethanol or methm_o!) r.a_ attract moisture which leads to separation

and

_ormatio_ ol acids durinq storage Acidic gas can damage the fu_:l system ol Jr_ engine while in storage

To avoid t_N!li_)=: problems, {he fuel system should be emptied b(:h)re star._!iJ., (}I 30 (lays or ionrjer.

Follow these instructions:

H)

Loosen lock nuL

(2)

Tighten truss head screw lightly

until

it

stops

turning.

Then turn it back one-fourth to one half

tum.

(3)

Tighten lock

nut.

Lubricate

the blades after

adjust-

ment_..

{4)

Stalt

the engine and ooerate the blades at high

the _peed for a minute or so.

(5)

Stop the engine and carefully feel the blades with

your hand, If they are just warm to the touch, you

have made the proper adjustments, but if they are

too hot

for you to keep touching them, repeat

steps #1. #'2 and #3 above backing off slightly more

on 'the screw.

Note: Never fail to stop the engine before making the adjustments.

PR_VI_ITATIIVI_

LIST AND

MAINTI_I_ANC_

STORAQt_ TIPS

CHI_CK

Be sure the engine and all other pmts are clean,

Check all nuts, bolts, screws, etc.. making sure they are tightened and secured as they should be.

inspect Carefully for' any fuel or oil leeks.

Check the air cleaner assembly for excessivedust or dirt_

If the filter requires

cleaning,

use the following

procedure: Remove the filter and wash in soap and water or blow off with compressed air. DO NOT clean filter in gasolineor other flammable solvent,

Inspect the muffler exhaust port /,tail pipe). If thece is any clogging, remove carbon particles adhering to iL

_AB_TS_A_C_

In

every

10--20 hours, inject one or two ounces of grease through a grease nippFe

installed

in the gear case of

the

BUSHWACKER Be sure the engine is stopped while greasing the gear case

2 Stop the engine before tubricatirrg the blades during the cutting operation, Frequent lubrication using a light weight oil during cutting will greatly add to blade life,

Figure 8

Figure 7

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MODEL

NO.

636.796670

How to Order

Repair Parts

The Model Number will be found on the top of recoil st artero Always mention the Model Number When requesting service or repair parts for your unit.

All parts listed herein may be ordered from any SEARS, ROEBUCK

AND CO,.

OR SIMPSONS_SEARS LIMITED service units or most retail

stores.

WHEN ORDERING

FOLLOWING

REPAIR

INFORMATION

PARTS, ALWAYS GIVE THE

AS SHOWN IN THIS LIST,

1. The PART NUMBER

2, TheMODEL NUMBER

of the Bushwacker

636. 79667{I

3 The PART DESCRIPTION

4, The NAME OF ITEM-

20.3cc Gas Bushwacker

if the parts you need are not stocked _ocalty, your order will be eIectronicatly transmitted for expedited handling to a Sears Repair Parts Distribution center

When you buy merchandise from Sears you get an extra something that nobody else can offer ....

Sears Service.

Across town

or

across the country, Sears Service follows you, providing competent service trustworthy, technicians using only factory parts.

Sears

specified

SEARS SERVICE

IS AT YOUR SERVICE

Your Sears Merchandise takes on added value when you discover that Sears has Service Units thioughout the country, Each is staffed by Sears_Trained, professionail technicians using Sears approved methods..

8200580101 4/89

Sears, Roebuck and Co.,

C]-doago,

lli 60684 U.S.A.

PRINTED IN JAPAN