Craftsman 636.79667 Trimmer User Manual
Contents
1. Soe R is aside gAR HMM sea inr rin 77 77 SE CRI TAW X SR t MODEL NO 636 796670 CAUTION Read Rules for Safe Operation and Instructions w i E e Assembly e Operation arefuliv e Maintenance e Repair Parts Sears Roebuck and Co Chicago ILL 60684 U S A EE 5208500101 4 89 PRINTED IN JAPAN Reid wrk ge p k MET phi x a NI 2 m vM D Cg n f oh h dech SE ie eA Pet prot r e EN E oes ptn pv ts Sarl tema Ti d D h H X ae BU ete ret VD G at Ls zl Deg A D d A E vo e SA Kate Be a ai d Zb Zeie di ad d 090 Ne KAP aa Te na ia Zeg wi Z i Sun dedu Sue RS e ki D a D LI LU 63 k z S E Ze ET XT 2 wi Ki d M d 3 D 4 z d D U D w i dm 1 er t b irri V i mtm a i l a l e TT e Kiger vik A tifi e ic Lim T MEE t CH p vds AN pt D CN A owl Ed vas TTA TRAE E AEPA Cog n TEES emprunter pa Ap rir eror hg ER Ma Patent P e Reel a s Prag SCOT Ac ng men so ted OA EH ve ire I MIA ty E e itte I Y pependit kr 3 atte thee eh e de rue G H D TWO YEAR LIMITED WARRANTY ON CRAFTSMAN BUSHWACKER 636 796670 ts For two years from date of purchase when this BUSHWACKER is maintained tubricated and tuned up according to the 3i operating and maintenance instructions in the owner s manual Sears will repair free of charge any defect in material or i workmanship This watranty excludes blades spark plug and2. E eum e AEN hd coo a ECH TE DE E Lid ptt i eee Jes Kintera an us CEU CU DUE DU Bon uem S e 5 due eS E SS 2 EE iri tl e P SE SE EE OTN OPEN ara ERR ATI UIT Wo e QE 5 dU EUR RAE VASE A P x EE Hte is NINE A AE e Dee x Re i ee SE Gs SC M SCHER GE SE ce a Er Peres ic a tt aad EC d Patina Sich imo Satie H rapes H d WE c e EN Geh META bai eoim sheets i Dt Adr deel e STRA ipn AR Figure 7 BHHIHHHHEHEREHREHEHHEEEEHEH DOTTER ITT ELLE LH EP E EN BA MEMO SEARS BUSHWACKER PARTSLIST MODEL 636 796670 Figure 7 AASIOS BUFEMA iaysom 6U1163 3915EM 0Z X GIA 310 12use Suid 39u58RA O1 X GIN 3108 9 923 J0 0 ap 32440 DEI BOUS PO eiatd 8 X SW Mes Sungay NOMdiBbOS3S0 NN ex gc e ON 000 a z apejq sadd 01 x oi mang OL X SW Mass A332 pol xugo WUBI BAr going Buintog fulutsg 69 os n18 ejddini alajd appo DIA 3nu r uoBexat BIN Inu x201 Gy wu abua pause BunudsLogseai GE X SIN HOH pays jour ajpugu 100 JJBUSBM I9 JOUSCAA BULIAS JSUTEMMHOE X SIN HOB asea addr Apos UNO LETE Op X SW Hog SIAN faysen Sunds BW Jaysem vid QIN inu uoBexak 08 x SW 1108 BAR 1015024 Buds OW Jaytom uita bij mu UoigxeH ig ajpu u deag OE x pA Maud BL x pri mang 1 eipugu Bap ivc 8DO ea qoux Suixig 05c 800 L Bunids 852 006 05 doao ui
3. air cleaner which ara expendatie parts and become worn during normal use i this BUSHWACKER is used for commercial or rental purposes this warranty applies for only 30 days from tha data of purchase c1 err i bag 4 D t A dox Ze H Ki H p apie tue ES Dio ag Siu ii M FI Tiii xia ae Ke A d K nnen Ped dern aai 8 3 eu SCH Berl Rer ae us se pp gea 1 Ej A E hue boh ie ft WR e fE WARRANTY SERVICE IS AVAILABLE BY CONTACTING THE NEAREST SEARS SERVICE CENTER DEPART Th S n A SE MENT IN THE UNITED STATES This warranty applies oniv while this product is in use in the United States 5 go E 5 am dint sa a G This warranty gives you specific legal rights and you may also have other rights which very from state to state dew ENS PE j SEARS ROEBUCK AND CO DRI 2 DEPT 698 731A c 7 SEARS TOWER M UO CHICAGO ILLINOIS 60684 me ab DA FU 51 Ae Y o jew bai r Bd S Y SS re WW em ES WEEN RIES SCH EE te le meg i ey u Nay Y jo a acci l i L P A ee E je Sg t Sue e 4 Y KA to p Ny ma Nd PN NS E ey SAFETY RULES AND PRECAUTIONS 7 Do not admit any persons or animals within the working area 30 feet or lass 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 Before each operation make sure that the screws are not shouts if necessary Pay special attention to keep by loose or miss
4. to protect yourself from electric shock CAUTION The operation af 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 Wa ra 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 Position commend Wide Vision Safety Mask for over spectacias or BUSHWACKER securely In startup place BUSHWACK standard safety glasses available at Sears Retail or Catalog ER in a level place so as to prevent the blade from Stores moving 6 Wear safe clothes safety shoes goggles earmuffs gloves etc Never wear loose clothing or jewelry while operat ing your BUSHWACKER KNOW YOUR BUSHWACKER Your new BUSHWACKER 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 to be sure that you have everything required for assembly Also check carefully for any visible damage IN THE EVENT THAT SOMETHING IS DAMAGED OR MISSING OR BOTH NOTIFY YOUR SEARS STORE IMMEDIATELY You should famili
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6. AI A LZ Z pui idu JDIBINQAMD NOLLdidOS3G 0 9954 BEB T3GOMFISPISLIUVd HSNOVMHSNG SHV3S n D SSSD 1EPOD N 0 0050 L1Z00 N OZLSO SEb00 O 1 J32023 901E 32023 VELOE V LOOS VblLE 3Z003 Virit 3 023 801 32023 8pDLE 32003 Z1E 32023 gsz 96 A Z2 96 t1 96 EZE 86 691 D I 069 1 LL 91 v01 91 EBEL 01 81 LIZ ZZI 8Sl iZ 929 56 9bi Z6 LSZ Z6 082 151 66 56 897 26 88276 PIS PE 9090 432023 ALD ON Luvd t ZE LE Of BL g7 it 9z SZ b K Z ic OZ Si fit EE Bi Gi vi Ei ZL GE C eg OO P D O is ON A35 13 Mee o nine The Model Number will be found on the top of recoil starter 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 REPAIR PARTS ALWAYS GIVE THE FOLLOWING INFORMATION AS SHOWN IM THIS LIST 1 The PART NUMBER 3 The PART DESCRIPTION 2 The MODEL NUMBER d The NAME OF ITEM of the Bushwacker 20 3cc Gas Bushwacker 635 796676 If the parts you need are not stocked locally your order will be electronically transmitted to a Sears Repair Parts Distribution center for expedited handling MODEL NO 636 796670 When you buy merchandise from Sears you get an extra E a something th t nobody else SC can offe
7. arize yourself with the various parts of your BUSHWACKER before attempting to assemble or operate the unit Refer to drawing below SPECIFICATIONS TYPE 2 cycle air cooled OVERALL LENGTH 18 DISPLACEMENT 20 3 cc 1 24 Cu In u TOOTH PITCH 0 98 D CARBURETOR Diaphragm type lt ENGINE RPM 8000 rom vi EN REN CUTTING STROKES 32 2 times sec 8066 rpm E PER MINUTE U SPARK PLUG T NGK BM7A or CHAMPION CJ 6 LUBRICATION Fuel oil Mixed 16 to 1 7 Li EUM CLUTCH TYPE Dry Centrifugal DRY WEIGHT 10 5 ibs 4 8 kg RE ER DIMENSION 35 5 x 8 7 x 8 6 in BLADE DRIVE Douhle cam drive SEARS CATALOG NUMBER 36402 STARTER KNOB START STOP SWITCH ENG FRONT HANDLE M THROTTLE LEVER GUIDE PLATE UPPER BLADE i b g REAR HANDLE FUEL TANK SHIELD LOWER BLADE Specifications are subject to change without notice PREPARING FOR OPERATION Fuat and oil mixture inspect the fuel tank and fill with clean fresh fuel of the proper mixture This engine requires a mixture of 16 parts gasoline ta 1 part oil 1 gal gasoline to B oz oil Use 71 36555 Craftsman Engine Oil or a high grade two cycle engine oil WARNING Experience indicates that alcohol blended fuels called qasohol 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 av
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10. imes At this time hold the machine securely so as to keep it fixed Figure 4 The carburetor is not filled with fuel Pull the starter 7 to B times to feed up fuel from tank to carburetor 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 DS sej th TES US GRE oes Ne ATT are TE D Sg Figure 4 5 After starting 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 In starting of the engine and during operation be fully careful to keep bystanders or obstacles off the operating side and confirm safety requirements for operation 6 After starting the engine warm up the engine for about minutes at medium speed Immediately after starting speed up the engine slowly Never open the throttle fully without a ipad otherwise the engine will run at a high speed reducing engine life Stopping the Engine t Reduce the engine rpm to idle by releasing the throttle 2 Set the stop switch to stop Figure 1 Biada sharpening f the edges are rounded and do not cut well any more grind off only the shaded portions Do not grind the contact surfaces sliding surfaces of the top and bottom edges Figure 5 Edge cross section Holding the disk grinde
11. ing that the components are not damaged standers especially children away from the working sita and that the blades are not chipped off or cracked If a D Stop the engine and pay special attention to the blades blade is chipped or cracked replace it with a new one whenever you carry the BUSHWACKER from one place er o tion 2 Do not attempt engine or blade adjustments or refuel fone ext gerere ono aTe opera P ing before allowing the engine and muffler to cool 9 Never let any child handle the machine a Do not remove the fuel tank cap while the engine is 10 Use BUSHWACKER only for cutting of young trees running or when it is stil hot grass etc of which diameter is 0 2 or less Never use BUSHWACKER to cut metals or other hard materials b Clean off fuel tank cap area before refueling Do not smoke while refueling 11 Never operate BUSHWACKER in a bad weather condi c Take care not to spill any fuel If it is spilled wipe it tion rain snow strong wind abnormal SES ait temperatura ete d Never operate on gasoline only As this engine is of 12 Keep this manval in place x eee eet Tele Ro e 2 cycle type use mixed fuel whose mixture ratio is cepeatediy fOr palety GE EE pessibte 16 1 1 gal gasoline to 8 oz oil and a proper lubri users how to operate the machine 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 tion
12. ngine and operata the blades at high the speed 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 tha 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 PREVENTATIVE MAINTENANCE CHECK LIST AND STORAGE TIPS Be sura the engine and all other parts are clean Check ali nuts bolts screws etc making sure they are tightened and secured as they should be Inspect carefully for any fuel or oil leaks Check the air cleaner assembly for excessive dust 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 gasoline or other flammabie solvent Inspect the muffler exhaust port tall pipe If there is any clogging remove carbon particles adhering to it MAINTENANCE d Stop the engine before lubricatim the blades during the cutting operation Frequent lubrication using a light i ile avery 10 85 dicure file e ieti izzzouisj i weight oil during cutting will greatly add ta blade life grease through a grease nipple installed in the gear case of the BUSHWACKER Be sure the engine is stopped kk ji ja KEE SA while greasing the gear case lente cet SE
13. oid 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 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 DO NOT MIX GASOLINE AND OIL DIRECT LY IN THE ENGINE FUEL TANK IMPORTANT Failure to follow proper fuel mix instructions could result in serious damage to the engine CAUTION When 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 this will cause hard starting and poor performance f fuel mix has been stored longer than this time 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 area 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 extremaly hot engine Check points hefore operation CHECK for loose bolts nuts and fittings Clean the air filter of all dirt etc before the operation PRECAUTIONS DURING OPERATION 1 df the blades have stopped on account of a branch caught during the trimming be sure to stop the engine and elimina
14. onsumes all the fuel ieft in the carburetor 3 Store the BUSHWACKER in a clean and dry place Always keep children away from the machine 4 Remove the spark plug inject a small amount of engine oil through the spark plug hole Then puli the recoil starter a few times to put a thin coat of ail on the cylin der Install the spark plug again when the piston has stopped at a top dead center it is important to prevent qum deposits from forming in essential fuel system parts such as the carburetor fuel filter fuel hose or tank during storage Also experience indicates that 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 Follow these instructions BLADE ADJUSTMENT Performed with angina stoppad F The blades wear with use when you notice a decrease in cutting performance adjust the blades as follows LM AM E b Upper blade Lock nut Flat washar Lower blade PHILLIPS truss screw Cross sectional view of blades 1 Loosen lock nut 2 Tlghten truss head screw lightly until it stops turning Then turn it back one fourth to one half turn 3 Tighten lock nut Lubricate the blades after adjust ments 4 Start tha e
15. r Sears Service Across town or across the country Sears Service follows you providing trustworthy competent service technicians using only Sears specified factory parts How to Order Repair Parts Your Sears Merchandise takes on added value when you discover that Sears has Service Units throughout the country Each is staffed SEARS SERVICE by Seers Trained professional technicians using Sears approved methods IS AT YOUR SERVICE Sears Roebuck and Co Chicago Il 60684 U S A nt ei cine Ad aki a BAL 520050010 4 88 PRINTED IN JAPAN
16. r at a 45 angle grind the adye off to the dotted line ta sharpen the 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 Adjustments SPARK PLUG MAINTENANCE if tha spark plug electrode area has an excess of carbon buildup the efficiency of the plug will be seriously reduced REMOVE THE CARBON WITH A SPARK PLUG CLEANER OR WIRE BRUSH After cleaning the spark plug ELECTRODE GAP TO 024 028 RESET THE Carburetor Proper adjustment of the carburetor is very important to the operation of this engine The carburetor has bean carefully adjusted at the factory and therefore should not require any further adjustment Adjustment of Engine Idling if the blade happens to run in idling adjust the cable adjuster of the throttle wire to stop blade movement in idling Figure 6 STORAGE AFTER OPERATION 1 Clean every part repair faulty sections and apply a thin coat of oil on metal parts to prevent rust In cleaning the machine always use a clean cloth Never use strong solvents such as gasoline 2 f the BUSHWACKER will not be used for a long period of time drain the fuel from the tank then start the engine and keep the engine running until it c
17. te the branch Refrain from cutting too hard or too thick a branch aver 4 in diameter 2 When the machine is running never touch the blades Never point the blades toward a person 3 Hold BUSHWACKER firmly with both hands 4 The engine speed must not be excessive but just enough to do the cutting 5 To avoid a burn do not touch the engine during tha operation or immediately after stopping the engine 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 7 Do not use the BUSHWACKER continuously for a long time it is normal to take a break of 10 to 20 minutes after every 50 minute operation B Never leave the BUSHWACKER running unattended 9 If there is any trouble during operation be sure to stop the engine first Move the switch to STOP STARTING AND STOPPING 1 When starting the engine set the switch to START Figure 1 Figure 1 2 The choke control isa Lever type See Figure 2 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 K ES Iw AE D rd Figure 2 3 Puli the throttle lever alittle push the throttle knob and lock the throttle fever at the starting position Figura 3 Figure 3 4 Pull the recoil starter several t
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