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Craftsman 79960 Owner's Manual

55 hp chipper/vac with wheel adjusters
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S_EA/ S
OWNER'S
MANUAL
MODEL NO.
987.799601
Caution:
Read and Follow
All Safety Rules
and Instructions
Before Operating
This Equipment.
®
5 Horsepower
CHIPPER/VAC
with Wheel Adjusters
• Assembly
• Operation
• Customer Responsibilities
• Service and Adjustment
• Repair Parts
Sears, Roebuck and Co., Hoffman Estates, IL 60179
U.S.A.
FORM 1902963 (11/94)

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  Summary of Contents for Craftsman 79960

  • Page 1 All Safety Rules and Instructions Before Operating This Equipment. Sears, Roebuck and Co., Hoffman Estates, IL 60179 FORM 1902963 (11/94) 5 Horsepower CHIPPER/VAC with Wheel Adjusters • Assembly • Operation • Customer Responsibilities • Service and Adjustment • Repair Parts ®...
  • Page 2 OR MAKING REPAIRS. IMPORTANT • 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_ • Do not operate this equipment unless the collection bag or blower deflector is installed.
  • Page 3 • Do not operate the chipper with the blower deflector installed Do not operate the chipper if the chipper chute flap is damaged or missing Keep your face and body safely away from the chipper...
  • Page 4 MAINTENANCE AND STORAGE: • When equipment is stopped for servicing, inspection, storage, or to change an attachment or accessory, make sure the spark ptug wire is disconnected from the spark plug Allow the engine to cool before making any inspections, adjustments, etc •...
  • Page 5 This warranty excludes the collection bag, spark plug, air cleaner, and chipper blade which are expendable parts and become worn during normal User if this Chipper/Vac is used for commercial or rental purposes, this warranty applies for only 30 days from the date of purchase...
  • Page 6: Table Of Contents

    Clearing Jams and Clogs ... Collection Bag, Install ... Collection Bag, Remove ... Control Lever, Engine ... Cooling System, Cleaning ... Customer Responsibilities Cutting Blade, Chipper ... 30-31 Decals ... Engine Air Filter ... Control Lever ... Cooling System ...
  • Page 7 This attachment was available when the chipper/vac was purchased° It is available at most Sears retail outlets and service centers. Most Sears stores can also order repair parts for you, when you provide the model number of your chipper/vac. VACUUM...
  • Page 8: Assembly

    Read these instructions in their entirety before you attempt to assemble your new chipper/vaco Your new chipper/vac has been completely assembled at the factory, except for the items shown in Figure 1.. To ensure proper operation of your chipper/vac, all nuts and bolts must be securely tightened when changing the configuration the correct tools as necessary to ensure proper tightness.
  • Page 9 The remaining assembly steps should be done on a clean, level surface, Choose the mode of operation from the pictures below and then go to the page for assembly of the chipper/vac in the desired configuration.. Walk-behind vacuuming - see Page t0...
  • Page 10 (D) and pull the front rod (C) out through the bottom of the deck. Figure 3: Shredder screen installation. ASSEMBLY VACUUMING OR USING THE CHIPPER 4. Pull the screen (A) out of the discharge opening.. Re- install the rods and hair pin clips on the screen for safe- keeping. IMPORTANT: THE SCREEN ARE THE ONLY STYLE FASTENERS THAT SHOULD BE USED°...
  • Page 11 CAUTION STEP 2: INSTALL COLLECTION For walk-behind vacuuming or using the chipper, install the collection bag as described below. 1. Stop the engine, disconnect the spark plug wire from the spark plug, and make sure that all moving parts have come to a complete stop.
  • Page 12 ASSEMBLY FOR BLOWER IMPORTANT: DO NOT USE THE CHIPPER IF THE MACHINE IS SET UP FOR BLOWER OPERATION.. STEP 1: REMOVE 'THE COLLECTION INSTALLED) 1o Stop the engine, disconnect the spark plug wire from the spark p/ug, and make sure that all moving parts have come to a complete stop.
  • Page 13: Blower Deflector

    STEP 4: REMOVE THE SHREDDER SCREEN For maximum air flow, remove the shredder screen before insta!iing the blower deflector 1. The screen (A) is held in place by two long rods (B and C) and hair pin clips (D), See Figure 8, 2.
  • Page 14 ASSEMBLY FOR OPTIONAL HOSE OPERATION NOTE: The optional Vacuum Hose is designed for stationary vacuuming operation only, STEP 1: MOVE HANDLEBARS TO VACUUMING POSITION 1. Stop the engine, disconnect the spark plug wire from the spark plug, and make sure that all moving parts have come to a complete stop, 2.
  • Page 15 STEP 3: REMOVE THE SHREDDER SCREEN For maximum air flow, remove the shredder screen before installing the vacuum hose., t. The screen (A) is held in place by two long rods (B and C) and hair pin clips (D) (see Figure 13). 2.
  • Page 16: Baffle Plate

    STEP 5: 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. plate, position the plate underneath the front of the deck and snap it into place as shown in Figure 15.
  • Page 17: Control Lever

    Provides additional fuel from the carburetor to the cylinder for use when starting a cold engine,, (D) AIR CLEANER: Filters dirt which could damage engine parts, (E) CHIPPER CHUTE: Used to process small branches. (F) FUELTANK: Stores engine fuel OPERATION...
  • Page 18 RotatingCuttingBladesWill Cause Serious Personal Injury! Do not allow handsor any part of the bodyor clothing Select the inside the vacuum inlet, chipper chute, discharge opening, or blower deflector opening when the engine is running. Before inspecting or servicing machine, stop the engine and make sure that all...
  • Page 19: Fuel

    [] Be sure that all bystanders are at least 25 feet away from the area of operation, [] Check that the chipper chute, vacuum inlet, or discharge deflector are empty (after initial use of the machine).
  • Page 20: Primer

    GENERAL OPERATION Understanding how your machine works will help you achieve the best results when using the Chipper/Vac+ Read the following explanation before using the machine and see Figure 21 which shows the internal workings of the ChipperiVac_ (A) Chipper Chute...
  • Page 21 [] OTHER NON-ORGANIC DIRT & SAND (WILL QUICKLY DULL CHIPPER BLADE) STICKS AND TWIGS (WILL CLOG VACUUM INLET OR HOSE - PLACE IN CHIPPER CHUTE ONLY) OPERATION CHIPPING Chipping operation also takes place in the processing chamber° Branches fed down through the chipper chute...
  • Page 22: Walk-Behind Vacuuming

    Q Avoid 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 25.. IF THE MACHINE ,JAMS OR CLOGS, IMMEDIATELY SHUT OFF ON HOW TO REMOVE JAMS AND CLOGS.
  • Page 23: Vacuum Hose Operation

    Do not allow hands or any olher part of the body, or clothing inside the vacuum hose opening, blower dischargeopening, 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.
  • Page 24: Blower Operation

    Do not allow hands or any other part of the body or clothing inside the vacuum hose opening, blower dischargeopening, 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.
  • Page 25: Cutting Blade

    4. Feed the branch slowty. If the machine labors, puil the branch upward until the engine regains speed ... Continue to alternately feed and retract the branch until your hands approach the top of the chipper chute and then let go,, IMPORTANT:...
  • Page 26: Clearing Jams And Clogs

    CLEARING JAMS AND CLOGS WARNING Before inspecting,cleaning or servicingthe machine, stop the engine and make sure that all moving parts have come to a completestep° Disconnectthe spark plug wire and secure it away from the spark plug, Failure to follow this instruction could result in personal injury, A clog or jam can cause the vacuuming and discharging operations to decrease or even stop completely.
  • Page 27: Customer Responsibilities

    CUSTOMER RESPONSIBiLITiES IMPORTANT SERVICE MESSAGE Perform the Maintenance Schedule listed in the chart below to ensure the proper performance and long life of your machine. If you do not wish to service the machine yourself, you can bring it to your local Sears Service Center for expert service, SERVICE CheckEngine Oit Level (Page 28)
  • Page 28: Spark Plug

    CUSTOMER RESPONSIBILITIES To Change the Oil 1, Change the oil while engine is still warm from recent operation. Stop engine and make sure that all moving parts have come to a complete Disconnect spark plug wire and secure it away from spark plug.
  • Page 29: Ignition

    CUSTOMER RESPONSIBILITIES Check The Spark Plug 1, Stop the engine and make sure that all moving parts have come to a complete stop. Disconnect spark plug wire and secure it away from the spark plug. 2, Clean the area around the spark plug to prevent debris from falling into the spark plug hole_ 3, Remove and inspect the spark plug.
  • Page 30 REPLACE THE CHIPPER CUTTING Over time, the chipper cutting blade edge (A in Figure 33 on Page 31) will dul!. Sharpen or replace the blade when the chipper no longer cuts efficiently, Discard a cracked or severely nicked blade because the blade could break apart and cause personal injury.
  • Page 31 SERVICE AND ADJUSTMENTS 7, The chipper cutting blade (A in Figure 33) is mounted on the upper side of the flywheel assembly (B). AVOID CONTACT WITH THE BLADE AS IT tS EXTREMELY SHARP! To remove the blade, first remove the flywheel assembly as described below: a.
  • Page 32: Off-Season Storage

    If you do net want to remove gasoline, a fuel stabilizer (such as Craftsman Fuel Stabilizer No 335500) may be added to any gasoline left in the tank to minimize gum deposits and acids...
  • Page 33: Safety Interlock

    ChippingPerformance Is Poor I LDull chipper blade 2, Engine not reaching full RPM 3 Excessivelyworn engine shaft bearing(s) 4 Loose engine mounting bolts 5, Chipper blade to anvil clearance incorrect POINTS in this Troubleshooting Chart, refer to the appropriate safety precautions...
  • Page 34 4 Processing chamber clogged 5. Enginenotreachingfull RPM Unusual Vibrationor Noise 1. Solidobjectjammed in unit 2, Chipperbladelooseor damaged, 3 Rotorassembly out of baiance, 4 Chipper b ladetoanvilclearance incorrect 5 Engine cylindershaftor crankshaftisbent or damaged 6 Looseenginemountingbofts 7, Looseor m{ssingbolts on unit, 8, Engine shaftbearingsdamaged...
  • Page 35: Decals

    _.MANUAL HOT SURFACES CAN CAUSE SEVERE BURNS DO NOTTOUCH MUFFLEROR ADJACENT AREAS. DECALS ROTATING CUTTINGBLADESWILL CAUSESERIOUSINJURYf INLET CAP ORHOSE MUSTBEINSTALLED° DISCHARGE OPENING TOAVOIDSERIOUS INJURY. ROTATINGCUMNG BLADE WILL CAUSE SERIOUS INJURY! KEEP HANDS OUT OF CHIPPER CHUTE INLET AT ALL TIMES.
  • Page 36 CRAFTSMAI!5 HP CHIPPER/VACMODELNUMBER987.799601 89 "_ © REPAIRPARTS...
  • Page 37 CRAFTSMAN5 HP CHIPPER/VACMODELNUMBER987.799601 PART DESCRIPTION 143,955002" Engine,5 HP 1762042 Thread-FormingScrew 318-16x 1" 1763390 FlangeScrew,5/16q3 x 1" ... 13 1763255 Fanand ChipperDiscAssy ... 1 1104338 Key,114x 1/4 x 2" ... 1100010 Capscrew, 3 18-24x 1-1/4" ... ConicalWasher 1756993 Washer ... 1185831 1763261 Inlet Housing...
  • Page 38 CRAFTSMAN4-CYCLE ENGINE MODELNO. 143,955002 7-301 11287 MODELand SERIALIZe. NUMBERSHERE .262 " 292 I_'_ 292 276",-._. , 277,A.,_ _=._'_ 241_...
  • Page 39 CRAFTSMAN4-CYCLE ENGINE Part Name Ref. # Part # 36478A Cylinder (Incl, 2, 7, 20 & 125) 26727 Dowel Pin 33734 Breather Element 36557 Breather Body Ass'y (lnct 6 & 12) 36558 Breather Cover & Tube (Incl. 12B) 34695 Breather Tube Elbow Washer 28277 30589...
  • Page 40 CRAFTSMAN5 HP CHiPPER]VAC MODELNUMBER987.799601 CARBURETOR NO. 632670 (Fig. 1) Part [_ef. Part Name Throttle Shaft & Lever Assembly 631615 631767 Throttle Return Spring Dust Seal Washer 631184 631183 Dust Seal (Throttle) Throttle Shutter 632504 Shutter Screw 650506 631775 Fuel Fitting...
  • Page 41 NOTES...
  • Page 42 NOTES...
  • Page 43 NOTES...
  • Page 44 TOLL FREE NUMBER: 1-800-FON-PART (1-800-366-7278) Sears, Roebuck and Co., Hoffman FORM 1902963 (11/94) CRRFrSMRN ® 5 Horsepower CHIPPER/VAC with Wheel Adjusters Each Chipper/Vac its own engine has its own model number. The model number for your machine left side of the unit.

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987.799601