background image

Single Stage

Snow Thrower

Snow Boss 721

PRINTED IN U.S.A.

Operator’s Manual

FORM NO

7/11/01

WHITE OUTDOOR PRODUCTS COMPANY P.O. BOX 361131 CLEVELAND, OHIO 44136-9722

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 44136-9722.

IMPORTANT: 

Read safety rules and instructions carefully before operating equipment.

770-10543

Summary of Contents for Snow Boss 721

Page 1: ...ster 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 la...

Page 2: ...te is explained below For future reference please copy the model number and the serial number of the equipment in the space below ENGINE INFORMATION The engine manufacturer is responsible for all engi...

Page 3: ...ector housing height to clear gravel or crushed rock surfaces 6 Disengage all clutch levers before starting the engine 7 Never attempt to make any adjustments while engine is running except where spec...

Page 4: ...Disengage all clutch levers and stop engine Wait until the auger impeller come to a complete stop Disconnect the spark plug wire and ground against the engine to prevent unintended starting before cle...

Page 5: ...the lower chute crank Insert the upper chute crank into the lower chute crank and align the holes Re insert the hairpin clip into the hole to secure the two chute cranks See Figure 2 Figure 2 Attachin...

Page 6: ...per handle the auger control handle is used to engage and disengage the auger The snow thrower is designed to propell by the rotation of the auger Pull the control handle back against the upper handle...

Page 7: ...rate engine manual packed with your snow thrower To Start Engine Insert ignition key into slot Turn key to ON position Now follow the instructions below as it pertains to your unit Electric Starter Fi...

Page 8: ...for several seconds The unusual sound made by spinning the starter will not harm engine or starter Disconnect the power cord from receptacle first and then from switch box Recoil Starter With engine...

Page 9: ...handle provides adjustment for belt tension To adjust disconnect the Z end of control cable from the bottom hole in the control handle See Figure 10 Hook the cable into the upper hole in control hand...

Page 10: ...ructions on page 9 Tighten securely Figure 14 Engine Refer to the separate engine manual for all engine maintenance procedures Check engine and snow thrower frequently for loose hardware and tighten a...

Page 11: ...spark plug 5 Clean spark plug readjust gap or replace 6 Prime engine four times 7 Wait at least ten minutes before starting Engine runs erratic 1 Unit running on choke 2 Fuel line blocked or stale fue...

Page 12: ...MODEL SNOW BOSS 721 15 9 21 6 6 21 6 21 4 20 16 24 14 17 23 3 8 22 10 13 2 1 25 60 7 18 11 11 19 12 5 5 5 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 33 41 42 43 44 45 46 47 48 49 50 42 49 51 52 53...

Page 13: ...riage Bolt 32 710 0642 TT Screw 1 4 20 x 0 75 33 710 0773 TT Screw 3 8 16 x 0 5 34 710 0896 AB Screw 1 4 14 x 0 625 35 710 1005 B Screw 1 4 14 x 0 5 36 711 0848A Axle Tube 37 712 0116 Jam Lock Nut 38...

Page 14: ...s Tank 19 751 0603 Fuel Cap 20 754 0101A V Belt 21 756 0416B V Pulley Half 22 756 0475 Pulley 23 784 0322 Engine Mount 24 784 0323 Support Bracket 25 784 0374 Support Plate Engine Mount Ref No Part No...

Page 15: ...0451 Carr Bolt 5 16 18 x 0 750 3 710 3015 Hex Screw 1 4 20 x 0 75 4 712 3027 Lock Nut 5 712 3068 Hex Lock Nut 6 720 0284 Hand Knob 7 731 0851A Flange Keeper Chute 8 731 0915B Lower Chute 9 731 0921 Up...

Page 16: ...these items b Routine maintenance items such as lubricants filters blade sharpening and tune ups or adjustments such as brake adjustments clutch adjustments or deck adjustments and normal deteriorati...

Reviews: