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Operator’s Manual
Single Stage
Snow Thrower
Snow Boss 721
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 effe
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TABLE OF CONTENTS Content Page Important Safe Operation Practices .................................................................................. 3 Assembling Your Snow Thrower ....................................................................................... 5 Know Your Snow Thrower................................................................................................. 6 Operating Your Snow Thrower ................................................................................
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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. When you see this symbol—heed its warning. WARNING: Engine Exhaust, some of its constituents, and certain vehicle components
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4. Never operate with a missing or damaged discharge Maintenance And Storage chute. Keep all safety devices in place and working. 1. Never tamper with safety devices. Check their proper 5. Never run an engine indoors or in a poorly ventilated operation regularly. area. Engine exhaust contains carbon monoxide, an 2. Disengage all clutch levers and stop engine. Wait until odorless and deadly gas. the auger/impeller come to a complete stop. Disconnect 6. Do not operate machine while under th
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SECTION 2: ASSEMBLING YOUR SNOW THROWER Remove the hairpin clip from the end of the lower Unpacking From Carton chute crank. Cut along corners of the carton and lay it down flat. Insert the upper chute crank into the lower chute Remove packing material. crank and align the holes. Remove any loose parts included with unit (i.e., Re-insert the hairpin clip into the hole to secure the operator’s manual, etc.). two chute cranks. See Figure 2. Roll unit out of carton. Check carton
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handle. Hold the “Z” fitting with the pliers, not the cable, to avoid damaging the cable. Lower Chute Nut NOTE: The upper hole in the control handle provides Carriage Bolt for adjustment in belt tension. Refer to page 9 of this Flat manual for instructions. Flat Washer Washer Assembling Discharge Chute Hex Bolt Turn the chute crank until the chute faces straight to the front. See Figure 4 . Remove the hand knob, flat washer and carriage Upper bolt from the upper chute. See Figure 4.
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Discharge Chute Ignition Key The angle of the discharge chute controls the distance Used to start engine. Put key in “ON” position to start that the snow is thrown. Tilt the discharge chute up for for both electric and recoil start engines. Follow starting greater distance; tilt down for less distance. Loosen the instructions given in the next section. hand knob on the side of the discharge chute to adjust. Recoil Starter Tilt the chute to the desired position, and tighten the Used to man
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If you have a grounded three-prong receptacle, or four times. Pulling the starter rope will produce a proceed as follows. loud clattering sound, which is not harmful to the Rotate choke lever to FULL position. engine or starter. Connect power cord to switch box on dash panel. Wipe all snow and moisture from the carburetor Plug the other end of power cord into a three-prong cover in the area of the control levers. Also, move 120-volt, grounded, AC receptacle. control levers back and f
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SECTION 5: MAKING ADJUSTMENTS Belt Tension WARNING: NEVER attempt to make any Periodic adjustment of the belt tension may be required adjustments while the engine is running, due to normal stretch and wear on the belt. Adjust the except where specified in the snow thrower belt tension, following instructions below, if the augers and/or engine operator’s manuals. seem to hesitate while turning although engine maintains the same speed. Shave Plate The upper hole in the control handle p
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SECTION 6: MAINTAINING YOUR SNOW THROWER Replacing Shave Plate WARNING: Before servicing, repairing, or The shave plate is attached to the bottom of the auger inspecting, disengage all clutch levers and stop housing and is subject to wear. It should be checked engine. Wait until all moving parts have come periodically. There are two wearing edges and the to a complete stop. Disconnect spark plug wire shave plate can be reversed. See Figure 14. and ground it against the engine to prevent
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SECTION 7: OFF-SEASON STORAGE Follow “Storage” instructions in the Engine Manual. WARNING: Never store engine with fuel in Store in a clean, dry area. Block the snow thrower tank indoors or in enclosed, poorly ventilated up so it is not resting on the rubber auger blades. areas where fuel fumes may reach an open NOTE: When storing any type of power equipment in a flame, spark or pilot light as on a furnace, water poorly ventilated or metal storage shed, care should be heater, clothes dr
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SECTION 9: PARTS LIST FOR MODEL SNOW BOSS 721 15 9 6 21 17 6 6 14 21 24 21 23 3 1 8 22 13 10 4 2 20 25 16 7 33 11 57 35 45 42 48 32 12 19 47 18 31 44 26 58 11 35 41 53 49 60 42 28 36 37 52 5 5 33 27 29 59 5 54 50 51 49 43 35 56 53 40 38 34 46 55 39 30 12
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Model Snow Boss 721 Ref. No. Part No. Part Description Ref. No. Part No. Part Description 747-1311 Upper Chute Crank Assemby 710-0451 Carriage Bolt 1. 31. 684-0177 Lower Chute Crank Assembly 710-0642 TT Screw 1/4-20 x 0.75” 2. 32. 684-0178 Bracket Assembly: Mitten Grip 710-0773 TT Screw 3/8-16 x 0.5” 3. 33. 684-0192 Shroud:Black, 7 Hp. Electric 710-0896 AB Screw 1/4-14 x 0.625” 4. 34. 710-0895 TT Screw 1/4-15 x 0.75” 710-1005 B Screw 1/4-14 x 0.5” 5. 35. 710-1003 B Screw #10-16 x 0.625” 711-0848
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Model Snow Boss 721 19 16 24 18 1 15 7 5 11 10 15 17 8 Engine is for reference only and may not resemble the engine on your snow thrower. 9 6 13 25 3 21 13 14 Part of electric 23 2 3 start engines 4 22 20 Ref. No. Part No. Description Ref. No. Part No. Description 1. 629-0236 Extension Cord 719-0581 Spacer 9. 2. 710-0157 Hex Bolt 5/16-24 x 0.75” 726-0205 Hose Clamp 10. 3. 710-0409 Hex Bolt 5/16-24 x 1.75” 731-2005 Choke Knob 11. 4. 710-0502A TT Sems Screw 736-0119 Lock Washer 13. 5. 710-0751 He
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Model Snow Boss 721 5 Ref. No. Part No. Description 9 1. 710-0487 Carriage Screw 5/16-18 x 2.0” 2. 710-1270 Machine Screw 3. 712-0324 Hex Lock Nut 1/4-20 4. 720-0284 Hand Knob w/ Wing Nut 5. 720-0295 Foam Grip 8 6. 725-0157 Cable Tie 10 7. 736-0451 Saddle Washer 3 8. 746-0883 Control Housing 2 9. 747-0956 Auger Bail 4 10. 749-0711A Upper Handle: Gull Wing NOTE: For painted parts, please refer to the list of color codes below. Please add the applicable color 1 code, wherever needed, to the part
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MANUFACTURER’S LIMITED WARRANTY FOR: c. Hydraulic pumps, valves and cylinders have a sepa- The limited warranty set forth below is given by White Out- rate one year warranty. door Products Co. with respect to new merchandise pur- d.White Outdoor Co. does not extend any warranty for chased and used in the United States, its possessions and products sold or exported outside of the United States territories. of America, its possessions and territories, except those sold through White Outdoor Co. au
