background image

11

SECTION 7:  OFF-SEASON STORAGE

Clean snow thrower thoroughly.

Lubricate as instructed above with a light oil.

Follow “Storage” instructions in the Engine Manual. 

Store in a clean, dry area. Block the snow thrower 
up so it is not resting on the rubber auger blades.

NOTE: 

When storing any type of power equipment in a

poorly ventilated or metal storage shed, care should be
taken to rustproof the equipment, especially springs,
cables and all moving parts.

SECTION 8:  TROUBLESHOOTING GUIDE

NOTE: 

For repairs beyond the minor adjustments listed above, call the White Outdoor Customer Dealer Line at

1-(800)-949-4483 for the dealer nearest you. Refer to separate engine manual, packed with your snow
thrower, for engine  information.

WARNING: 

Never store engine with fuel in 

tank indoors or in enclosed, poorly ventilated 
areas where fuel fumes may reach an open 
flame, spark or pilot light as on a furnace, water 
heater, clothes dryer, or other gas appliance.

Problem

Cause

Remedy

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 

1.

Fill tank with clean fresh gasoline.

2.

Clean fuel line

3.

Insert key and turn to ON position

4.

Connect wire to 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 fuel

3.

Water or dirt in fuel system

4.

Carburetor out of adjustment

1.

Move choke lever to OFF position.

2.

Clean fuel line and fill tank with fresh, 
clean gasoline.

3.

Refer to engine manual for remedy.

4.

Refer to engine manual for remedy.

Engine overheats

1.

Carburetor out of adjustment

1.

Refer to engine manual for instruction.

Loss of power

1.

Spark plug wire loose

2.

Vent in gas cap plugged

1.

Connect and tighten spark plug wire.

2.

Clear vent.

Excessive vibration

1.

Loose parts or damaged auger

1.

Stop engine immediately and disconnect 
spark plug wire. Check for possible 
damage. Tighten all bolts and nuts. Repair 
as needed. If the problem persists, take 
unit to an authorized service dealer.

Unit fails to self-propel  1.

Drive cable out of adjustment

2.

Drive belt loose or damaged

1.

Adjust drive cable following instructions on 
page 9 of this manual.

2.

Replace drive cable.

Unit fails to discharge 
snow

1.

Discharge chute clogged

2.

Foreign object lodged in auger

3.

Drive cable not adjusted properly

4.

Drive belt loose or damaged

1.

Stop engine immediately and disconnect 
spark plug wire. Clean discharge chute 
and the auger housing.

2.

Stop engine immediately and disconnect 
spark plug wire. Remove object .

3.

Adjust drive cable following instructions on 
page 9 of this manual.

4.

Replace drive belt.

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: