Troy-Bilt 521 Operator's Manual
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Troy-Bilt 521 Operator's Manual

Troy-Bilt 521 Operator's Manual

Troy-bilt single stage snow thrower operator's manual
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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
. 769-00309A.fm
FORM NO
(7/2003)

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Summary of Contents for Troy-Bilt 521

  • 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. Single Stage Snow Thrower Models 521 & 721 . 769-00309A.fm FORM NO (7/2003)

  • Page 2: Table Of Contents

    Content Important Safe Operation Practices ... 3 Assembling Your Snow Thrower ... 5 Know Your Snow Thrower... 6 Operating Your Snow Thrower ... 7 Making Adjustments... 8 Maintaining Your Snow Thrower ... 9 Off-Season Storage ... 10 Troubleshooting ... 11 Parts List ...

  • Page 3: Section 1: Important Safe Operation Practices

    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: Maintenance And Storage

    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: Section 2: 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: Section 3: Know Your Snow Thrower

    SECTION 3: KNOW YOUR SNOW THROWER WARNING: Be familiar with all the controls on the snow thrower and their proper operation. Know how to stop the machine and disengage them quickly. Gasoline Cap Fuel Plug Discharge Chute Auger Shave Plate Auger Control Handle Located on the upper handle, the auger control handle is used to engage and disengage the auger.

  • Page 7: Section 4: Operating Your Snow Thrower

    SECTION 4: OPERATING YOUR SNOW THROWER Before Starting WARNING: Read, understand, and follow all instructions and warnings on the machine and in this manual before operating. • The spark plug wire was disconnected for safety. Attach spark plug wire to spark plug before starting. Gas and Oil Fill-Up •...

  • Page 8: Section 5: Making Adjustments

    To Stop Engine • To stop engine, turn ignition key counter-clockwise. Disconnect the spark plug wire from the spark plug to prevent accidental starting while equipment is unattended. To help prevent possible freeze-up of starter, proceed as follows: • Run engine for a few minutes before stopping to help dry off any moisture on the engine.

  • Page 9: Control Cable

    • To adjust, tip the snow thrower back so that it rests on the handle. Loosen the four lock nuts and bolts which secure the shave plate to the housing. See Figure 7. Move the shave plate to desired position and retighten the nuts and bolts securely.

  • Page 10: Section 7: Off-Season Storage

    • Install new shave plate, making sure the heads of the carriage bolts are on the inside of the housing. • Adjust the shave plate according to instructions on page 8. Tighten securely. Engine • Refer to the separate engine manual for all engine maintenance procedures.

  • Page 11: Section 8: Troubleshooting Guide

    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: Section 9: Parts List For Models 521 & 721

    SECTION 9: PARTS LIST FOR MODELS 521 & 721 CABLE TO BE ABOVE WHEEL AXEL...
  • Page 13 Models 521 & 721 REF. PART DESCRIPTION 684-04027 Auger Ass'y 21" complete w/Solid Shaft 684-04028 Auger Housing Ass’y 21” 710-0134 Screw, 1/4-20 x .62 710-0167 Carriage Bolt 1/2-20 x .50 LG 710-0323 Truss Mach Scr 5/16-18 x .75 710-0352 Hex "B" Tap Scr. 1/4-14 x .375" LG 710-0597 Hex Screw 1/4-20 x 1.00 Gr.
  • Page 14 Models 521 and 721 REF. PART DESCRIPTION 710-04071 Carriage Screw, 5/16-18 x 1.0 710-0451 Carriage Bolt, 5/16-18 x.075 GR 1 712-3068 Hex Patch I-Nut 5/16-18‘ 720-0284 Handle Knob Assembly 5/16-18 731-04127 Lower Chute 5” Dia 731-04353 Ring-Lower Chute 731-04373 Chute, Adapter 5” Dia 731-04388 Handle-Chute 5”...
  • Page 15 Models 521 and 721 REF. PART DESCRIPTION 629-0071 Extension Cord 710-0157 Hex Screw, 5/16-24 x .75 710-0409 Hex Screw, 5/16-24 x 1.75 710-0654A Self Tapping Screw, 3/8-16 x 1.00 710-0751 Hex Screw, 1/4-20 x .62 710-1003 Screw, #10-16 x .625...
  • 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” warrants this product against defects in material and workmanship for a period of two (2) years commencing on the date of original purchase and will, at its option, repair or replace, free of charge, any part found to be defective in materials or workmanship.

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721

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