OPERATOR’S MANUAL SNOW THROWER MODELS Snow Boss 550 Snow Boss 750 IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forestcovered, 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.
TABLE OF CONTENTS Content Page Important Safe Operation Practices................................................................... 3 Assembling Your Snow Thrower........................................................................ 5 Know Your Snow Thrower ................................................................................. 7 Operating Your Snow Thrower........................................................................... 8 Making Adjustments .........................................
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.
3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. The clutch levers must operate easily in both directions and automatically return to the disengaged position when released. 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.
SECTION 2: ASSEMBLING YOUR SNOW THROWER NOTE: Any reference in this manual to the left or right side of the snow thrower is observed from the operator’s position. • • Unpacking • • • • • • Remove screws from the top sides and ends of the shipping crate. Set panel aside to avoid tire punctures or personal injury. Remove and discard plastic bag that covers unit. Remove any loose parts included with unit (i.e., Operator’s Manual, etc). Roll unit out of crate.
• • Wind the headlight wire around the right handle until excess slack is removed. Plug the wire from the headlight into the wire lead coming from the right side of the engine, beneath the fuel tank. Final Adjustments Auger Control Adjustment Check the adjustment of the auger control as follows: • Push forward on the auger control until the small rubber bumper contacts the upper handle. There should be slack in the cable. See Figure 5. • Release the auger control. The cable should be straight.
b. Engage the traction control and attempt to move them machine both forward and rearward. You should experience resistance as the wheels should not be turning. • Move the shift lever into the fast reverse (R2) position and repeat the previous steps (a & b).
Shift Lever adjusting the angle of the chute assembly. Move the chute tilt control forward to decrease the distance and toward the rear to increase the distance. See Figure 7. The shift lever is located in the center of the handle panel and is used to determine both ground speed and direction of travel. It can be moved into any of eight positions. See Figure 7. Headlight Forward The headlight is on whenever the engine is running. Your snow thrower has six forward (F) speeds.
Electric Starter (If Equipped) To Stop Engine • WARNING: The electric starter is equipped with a grounded three-wire power cord and plug and is designed to operate on 120 volt AC household current. It must be used with a properly grounded three-prong receptacle at all times to avoid the possibility of electric shock. Follow all instructions carefully prior to operating the electric starter. • • • • • • • • • • Electric Starter: • Determine that your house wiring is a three-wire grounded system.
Operating Tips NOTE: Allow the engine to warm up for a few minutes as the engine will not develop full power until it reaches operating temperature. • • WARNING: Muffle, engine, and surrounding areas become hot and can cause a burn. Do not touch. • • • upward (to lower the shave plate) for hard-packed snow. Adjust downward (to raise the shave plate) when using on gravel or crushed rock. For most efficient snow removal, remove snow immediately after it falls.
• Friction Wheel • Gear Shaft Thread the upper shift rod downward until the elbow on its lower end aligns with the hole found in the lower shift rod. Reconnect the upper shift rod to the lower shift rod by reinserting the hairpin clip removed earlier and sliding the connector back down into place. IMPORTANT: Make certain to check for correct adjustment of the shift rod as instructed under Final Adjustments in the Assembly Section, before operating the snow thrower.
SECTION 6: MAINTAINING YOUR SNOW THROWER Gear Case WARNING: Before lubricating, 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. The gear case is equipped with a grease fitting on the left housing and should be lubricated with Shell Alvania grease EPR00, part number 737-0168 every 25 hours. See Figure 14.
Traction Control / Auger Control Lock Engine The cams on the ends of the control rods which interlock the traction drive and auger drive controls must be lubricated at least once a season or every 25 hours of operation. The cams can be accessed beneath the handle panel. Use a multi-purpose automotive grease. Refer to the separate engine manual packed with your unit for all engine lubrication instructions.
Servicing Friction Wheel Rubber NOTE: Loosening the six nuts that connect the frame to the auger housing may aid in belt removal. • • The rubber on the friction wheel is subject to wear and should be checked after 25 hours of operation, and periodically thereafter. Replace the friction wheel rubber if any signs of wear or cracking are found. Lift the auger belt from the auger pulley, and slip belt between the support bracket and the auger pulley. See Figure 18.
• • Reassemble new friction wheel rubber to the friction wheel plates and hub, tightening the six screws in rotation and with equal force. Position the friction wheel assembly up onto the pin of the shift rod assembly, and slide the shaft through the assembly. Reassemble in reverse order.
SECTION 8: TROUBLESHOOTING Problem Engine fails to start Cause 1. Fuel tank empty, or stale fuel. 2. 3. 4. 5. 6. 7. 8. Engine runs erratic Remedy 1. Fill tank with clean, fresh gasoline. Fuel becomes stale after thirty days unless a fuel stabilizer is used. Blocked fuel line. 2. Clean the fuel line. Choke not in ON position 3. Move switch to ON position Faulty spark plug. 4. Clean, adjust gap or replace. Safety key not in ignition switch on engine. 5. Insert the key fully into the switch.
Models 550 & 750 4 17 11 9 16 13 8 15 1 10 14 5 6 18 3 7 12 2 Ref. No. 1. Part No. 618-0123 3 Part Description RH Housing 2. 618-0418 LH Housing w/Fitting 3. 710-0642 Self Tapping Screw, 1/4-20 x .75 4. 711-1020 Spiral Axle 22” (550) 711-0908 Spiral Axle 24” (750) 5. 714-0161 Hi-Pro Key, 3/16 x 5/8 6. 715-0143 Spring Spiral Pin, .25 x 1.25 7. 717-0528 Worm Gear, 20-tooth 8. 717-0526 Worm Shaft 9. 718-0186 Thrust Collar 10. 721-0325 Grease Plug 11.
Models 550 & 750 20 27 37 39 Drive Clutch Cable 20 5 13 7 38 37 Auger Clutch Cable 4 1 11 6 10 3 40 4 1 2 14 15 26 5 16 25 36 7 31 28 23 12 17 21 18 24 32 10 9 11 25 8 4 1 22 33 8 1 20 29 5 34 Auger Clutch Cable 26 35 19 Blower Housing 30 1 1 44 41 42 42 43 18
Models 550 & 750 Ref. No. Part No. Ref. No. Part Description Part No. Part Description 1. 710-1652 Hex Screw 24. 717-1444 7-Tooth Shaft 2. 784-5688 Drive Cable Guide Bracket 25. 715-0249 Roll Pin 3. 784-5687A Auger Clutch Cable Bracket 26. 714-0143 Click Pin 4. 756-0625 Roller Cable 27. 684-0042C Friction Wheel Assembly 5. 738-0924 Hex Screw 1/4-28 28. 656-0012A Friction Disc Wheel 6. 784-5630A Frame Assembly 29. 684-0013B Wheel Shift Rod Assembly 7.
Models 550 & 750 2 3 1 4 5 11 10 9 15 18 14 12 7 8 13 32 6 31 9 18 19 20 16 22 31 43 23 27 21 10 13 30 34 28 25 23 18 13 38 26 43 35 31 22 30 18 32 31 16 41 37 33 36 17 39 40 24 40 42 39 29 20
Models 550 & 750 Ref. No. Part No. Ref. No. Part Description Part No. Part Description Lock Jam Nut 3/8-24 30. 784-5038B 756-0178 Flat Idler 31. 736-0242 Bell Washer 3. 784-5632A Auger Idler Arm 32. 712-3010 Hex Nut 5/16-18 4. 710-0459A Hex Cap Screw 3/8-24 x 1.50 33. 784-5576 21.66” Shave Plate (550) 5. 738-0281 Shoulder Screw 784-5581A 23.66” Shave Plate (750) 6. 736-0167 Flat Washer .656 ID x 1.25 OD 34. 710-0260 Carriage Bolt 5/16-18 x .62 7.
Models 550 & 750 1 2 28 27 3 4 5 8 9 10 11 13 15 12 16 4 22 7 6 20 23 17 24 14 18 19 26 25 21 22
Models 550 & 750 Ref. No. Part No. Part Description 1. 710-1652 Hex Washer Screw 1/4-20 x.625 2. 731-1324 Belt Cover 3. 732-0339 Extension Spring 4. 710-0627 Hex Screw 5/16-24 x .75 5. 710-3005 Hex Cap Screw 3/8-16 x 1.25 6. 05896A Drive Clutch Bracket 7. 748-0234 Shoulder Spacer 8. 756-0985 Pulley Half 9. 754-0343 V-Belt 10. 756-0984 Pulley Half 11. 736-0270 Bell Washer 12. 710-0230 Hex Cap Screw 1/4-28 x .50 13. 756-0313 Flat Idler 14.
Models 550 & 750 67 70 73 10 35 13 44 32 45 32 68 32 49 72 41 42 32 36 48 43 4 18 34 71 41 54 (for ground wire of light ass’y) 27 62 55 37 43 42 11 59 12 5 74 39 40 20 11 31 53 66 9 B 23 29 B 16 A 55 15 63 65 44 69 30 47 A 35 51 39 64 46 33 38 11 74 19 45 28 21 24 60 59 6 14 1 25 26 20 52 4 7 12 54 18 58 61 15 20 11 56 55 2 17 57 12 8 24
Model 550 & 750 Ref. No. Part No. Ref. No. Part Description Part No. Part Description 1. 684-0008A Shift Arm Assembly 38. 732-0746 Torsion Spring, .44 x .8 2. 705-5204A Chute Crank Ass’y 39. 735-0199A Rubber Bumper 4. 710-0262 Carriage Bolt, 5/16-18 x 1.5 40. 736-0105 Bell Washer, .401 x .87 x .063 5. 710-0449 Carriage Bolt, 5/16-18 x 2.25 41. 736-0119 Lock Washer, 5/16 6. 710-0788 Self Tapping Screw, 1/4-20 x 1 42. 736-0509 Special Washer, .35 x .72 x .13 7.
MANUFACTURER’S LIMITED WARRANTY FOR: The limited warranty set forth below is given by White Outdoor Products Co. with respect to new merchandise purchased and used in the United States, its possessions and territories. White Outdoor Products Co. 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 material or workmanship.