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Troy-Bilt 521 Operator's Manual

Troy-bilt single stage snow thrower operator's manual.

 
Operator's Manual
IMPORTANT: Read safety rules and instructions carefully before operating equipment.
Warning:
This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-
covered, brush-covered or grass-covered land unless the engine's exhaust system is equipped with a spark arrester meeting
applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator.
In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have
similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized
service dealer or contact the service department, P.O. Box 361131 Cleveland, Ohio 44136-0019.
TROY-BILT LLC. P.O. BOX 361131 CLEVELAND, OHIO 44136-0019
PRINTED IN U.S.A.
Single Stage
Snow Thrower
Models 521 & 721
FORM NO
. 769-00309.fm
(8/2002)
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Summary of Contents

  • Page 1

    Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized service dealer or contact the service department, P.O. Box 361131 Cleveland, Ohio 44136-0019. TROY-BILT LLC. P.O. BOX 361131 CLEVELAND, OHIO 44136-0019 PRINTED IN U.S.A.

  • Page 2: Table Of Contents

    . A sample model plate is explained below. For future reference, please copy the model number and the serial number of the equipment in the space below. TROY-BILT LLC P. O. BOX 3 6 1 1 3 1 www.troybilt.com...

  • Page 3

    SECTION 1: IMPORTANT SAFE OPERATION PRACTICES WARNING: This symbol points out important safety instructions which, if not followed, could endanger the personal safety and/or property of yourself and others. Read and follow all instructions in this manual before attempting to operate this machine. Failure to comply with these instructions may result in personal injury.

  • Page 4

    Never operate with a missing or damaged discharge chute. Keep all safety devices in place and working. Never run an engine indoors or in a poorly ventilated area. Engine exhaust contains carbon monoxide, an odorless and deadly gas. Do not operate machine while under the influence of alcohol or drugs.

  • Page 5: Assembling Your Snow Thrower

    SECTION 2: ASSEMBLING YOUR SNOW THROWER Unpacking From Carton • Cut along corners of the carton and lay it down flat. Remove packing material. • Remove any loose parts included with unit (i.e., operator’s manual, etc.). • Roll unit out of carton. Check carton thoroughly for any remaining loose part.

  • Page 6: Know Your Snow Thrower

    handle. Hold the “Z” fitting with the pliers, not the cable, to avoid damaging the cable. NOTE: The upper hole in the control handle provides for adjustment in belt tension. Refer to page 9 of this manual for instructions. Assembling Discharge Chute •...

  • Page 7: Operating Your Snow Thrower

    Discharge Chute The angle of the discharge chute controls the distance that the snow is thrown. Tilt the discharge chute up for greater distance; tilt down for less distance. Loosen the hand knob on the side of the discharge chute to adjust. Tilt the chute to the desired position, and tighten the knob.

  • Page 8

    • If you have a grounded three-prong receptacle, proceed as follows. • Rotate choke lever to FULL position. • Connect power cord to switch box on dash panel. Plug the other end of power cord into a three-prong 120-volt, grounded, AC receptacle. •...

  • Page 9: Making Adjustments

    SECTION 5: MAKING ADJUSTMENTS WARNING: NEVER attempt to make any adjustments while the engine is running, except where specified in the operator’s manual. Shave Plate • To check the adjustment of the shave plate, place the unit on a level surface. See Figure 8. The wheels, shave plate and augers should all contact level surface.

  • Page 10: Maintaining Your Snow Thrower, Off-season Storage

    SECTION 6: MAINTAINING YOUR SNOW THROWER WARNING: Before servicing, repairing, or inspecting, disengage all clutch levers and stop engine. Wait until all moving parts have come to a complete stop. Disconnect spark plug wire and ground it against the engine to prevent unintended starting.

  • Page 11: Troubleshooting

    SECTION 8: TROUBLESHOOTING GUIDE Problem Engine fails to start 1. Fuel tank empty, or stale fuel 2. Blocked fuel line 3. Key not in ON position 4. Spark plug wire disconnected 5. Faulty spark plug 6. Engine not primed 7. Engine flooded with excessive priming Engine runs erratic 1.

  • Page 12: Parts List

    SECTION 9: PARTS LIST FOR MODELS 521 AND 721...

  • Page 13

    Models 521 & 721 Ref. No. Part No. Part Description 684-0174 Upper Chute Crank Assemby 684-0177 Lower Chute Crank Assembly 684-0178 Bracket Assembly: Mitten Grip 731-04075 Shroud (Model 521) 731-2569 Shroud (Model 721) 710-0895 TT Screw 1/4-15 x 0.75” 710-1003 B Screw #10-16 x 0.625”...

  • Page 14

    Models 521 and 721 Ref. No. Part No. 629-0071 Extension Cord 710-0157 Hex Bolt 5/16-24 x 0.75” 710-0409 Hex Bolt 5/16-24 x 1.75” 710-0502A TT Sems Screw 710-0751 Hex Screw 1/4-20 x 0.620” 710-1003 B Screw #10-16 x 0.625” 710-3013 Hex Screw 1/4-20 x 0.50”...

  • Page 15

    Models 521 and 721 Ref. No. NOTE: For painted parts, please refer to the list of color codes below. Please add the applicable color code, wherever needed, to the part number to order a replacement part. 700-xxxx is painted powder black, the part number to order would be 700-xxxx-0637.

  • Page 16

    MANUFACTURER’S LIMITED WARRANTY FOR: The limited warranty set forth below is given by Troy-Bilt LLC with respect to new merchandise purchased and used in the United States, its possessions and territories. Troy-Bilt LLC warrants this product against defects for a...

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