Craftsman 636.79667 User Manual

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.

5209500101 4/89 PRINTED IN JAPAN

TWO YEAR LIMITED WARRANTY ON CRAFTSMAN

BUSHWACKER 636.796670

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 usein the United Statas_

This warranty gives yOU specific tagal tieht_= and you may atso have other rights which very from scare to state,,

SAFETY RULES AND PRECAUTIOHS

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 refuel- ing 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 lubri-

cation oil such as Sears Catalog Number 36555.

3. 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..

4 Never operate the machine wherever ventilation is not

enough,

5 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 )

6 Wear safe clothes (safety shoes, goggles, earmuffs, gloves,

etc ) Never wear loose clothing or jewelry while operat- ing your BUSHWACKER

SEARS, ROEBUCK AND CO DEPT, 698/731A SEARS "TOWER

CHICAGO, ILLiNOiS 60684

7. Do not admit any persons or animals within the working area (30 feet or lessfrom 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 engineand 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 new B[JSHWACKER has been carefully packed at the factory to prevent damage during shipping and storage,

however, even with the best of preventative measures, damage does sometimes occur It is recommended that you follow the check out procedures listed below:

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 SEARS STORE IMMEDIATELY,)

You should familiarize yourself with the various parts of your BUSHWACKER before attempting to assemble or operate the unit, Refer to drawing below.

SPECIFICATIONS

TYPE DISPLACEMENT

u_ I CARBURETOR z l FUEL TANK

_ !CAPACtTY

SPARK PLUG LUBRICATION

DRYWEIGHT DIMENSION

2 cycle air-cooled

2013 cc 1i,24 Cu' In,)

O ,p.ragmtype ..................

17,5 UoSoff. oz,. (0°5£)

NGK BM7A or CHAMPION CJ 6. Fuel oil Mixed 16 to 1

(1 gal. gasoline to 8 oz, oil)

t0.5 ibs (4.8 kg)

35.5 × 8,7 x 8,6 in,

"SEARS CATALOG NUMBER-36402

FRONT HANDLE

I OVERALL LENGTH i 18"TOOTH PITCH j 0.98"

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

i ENGINE RPM 8000 rpm

....... PER MINUTE

DRIVE SYSTEM

CLUTCHTYPE Dry Centrifugal CLUTCH ENGAGE. 3800 rpm -+200 rpm

MENT BLADE DRIVE Double cam drive

STARTLER KNOB

ENG

START/STOP SWITCH

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 Craftsman Engine Oil or a high grade

b_vo cycle engine oi!.

WARNING: Experience indicates that alcohol blended fuels

{called gasohot 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 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.

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.

6 Never operate BUSHWACKER on unstable ground or

standing on tiptoe Never use it while climbing 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,

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 the engine, set the switch to START, (Figure 1)

DO NOT MIX GASOLINE AND OIL DIRECT- LY tN THE ENGINE FUEL TANK,

IMPORTANT: Failure to follow proper fuel mix instructions could result in serious damage to the engine

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

DO NOT add fuel to this unit near an open fire or sparks. BE SURE to wipe off spilled fuel before attempting to start 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

Switch

Figure 1

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.

If the blades have stopped on account of a branch caught during the trimming, be sure to stop the engine

and eliminate the branch. Refrain from 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

Figure 2

3. Puli the throttle lever a little, push the throttle knob

and lock the throttle lever at the starting position.

(Figure 3}

Figure 3

4, Pull the recoil starter several times_ (At this time, hold

the machine securely so as to keep it fixed.)

(Figure 4)

The carburetor is no'. filled with fuelo Pull the starter 7 to 8 times to feed up fuel from tank to carb_retor.

without a load, otherwise the engine will run at a high

speed reducing engine life.

Stopping the Engine

I Reduce the engine rpm to idle by releasing the throttle

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

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}

Caution: - Never let go of the starter rope from its fully ex-

tended state. Return the starter rope to its original position while holding it securely.

-- Be careful not to break the starter rope,

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

Disk grinder

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) Weargloves,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.,

Adjustments

SPARK PLUG MAINTENANCE - If the spark plug electrode area has an excess of carbon buildup, the

efficiency of the plug will be seriously reduced..

REMOV_ THE CARBON WITH A SPARK PLUG

CLEANER OR WIRE BRUSH After cleaning the spark ,,plug RESET THE

ELECTRODE GAP TO 024-028.

c_oss zectia

+ 9 hidden pages