White Outdoor Yard Boss 550 Operator'S Manual Download | Manualshive

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14

NOTE: Loosening the six nuts that connect the frame to
the auger housing may aid in belt removal.

•

Lift the auger belt from the auger pulley, and slip
belt between the support bracket and the auger
pulley. See Figure 18.

•

Replace the auger drive belt by following
instructions in reverse order.

Figure 18

Drive Belt

•

Follow the first four steps of the instructions for
servicing the auger belt.

•

Pull idler pulley up and lift belt off engine pulley and
friction wheel disc. See Figure 17.

•

Back out the stop bolt until the support bracket
rests on the auger pulley. See Figure 18.

•

Slip belt between friction wheel and friction wheel
disc. Remove and replace belt.

•

Reassemble following the instructions in reverse
order.

NOTE: The support bracket must rest on the stop bolt
after the new belt has been assembled. See Figure 18.

Servicing Friction Wheel Rubber

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.

•

Drain the gasoline from the snow thrower.

•

Tip the snow thrower up and forward, so that it rests
on the housing. See Figure 19.

Figure 19

•

Remove six self-tapping screws from the frame
cover underneath the snow thrower.

•

Remove the click pins which secure the wheels,
and remove the wheels from the axle.

•

Using a 7/8" wrench to hold the shaft, loosen, but
do not completely remove, the hex nut and bell
washer on the left end of gear shaft.

•

Lightly tap the hex nut to dislodge the ball bearing
from the right side of frame before removing the hex
nut and bell washer from left end of shaft.

•

Move the gear shaft to the right and slide the friction
wheel assembly from the shaft.

•

Remove the six screws from the friction wheel
assembly (three from each side). Remove the
friction wheel rubber from between the friction
wheel plates. See Figure 20.

Figure 20

Friction
Wheel

Support
Bracket

Auger Pulley

Idler Spring

Support
Bracket
Spring

Auger
Housing

Drive Plate

Friction
Wheel

Stop Bolt

Support Bracket

Auger Pulley

Hex Nut &
Bell Washer

Friction Wheel Rubber

Screws

Screws

Friction Wheel Plates

Hub

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Summary of Contents for Yard Boss 550

Page 1: ...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 ...

Page 2: ...r Support Department or an authorized dealer You can locate the model number by looking at the lower frame cover in the rear of your snow thrower A sample model plate is explained below For future reference please copy the model number and the serial number of the equipment in the space below CALLING WARRANTY SERVICE If you have difficulty assembling this product or have any questions regarding th...

Page 3: ... and other foreign objects which could be tripped over or thrown by the auger impeller 2 Always wear safety glasses or eye shields during operation and while performing an adjustment or repair to protect your eyes Thrown objects which ricochet can cause serious injury to the eyes 3 Do not operate without wearing adequate winter outer garments Do not wear jewelry long scarves or other loose clothin...

Page 4: ...ents and accessories approved by the manufacturer e g wheel weights tire chains cabs etc 20 If situations occur which are not covered in this manual use care and good judgment Contact your dealer or telephone 1 800 949 4483 for assistance and the name of your nearest servicing dealer Maintenance And Storage 1 Never tamper with safety devices Check their proper operation regularly 2 Disengage all c...

Page 5: ... Raise the upper handle assembly until it locks over the lower handle Look at the lower rear of snow thrower frame to be sure both cables are aligned with cable roller guides Secure the upper handle and lower handle with the two plastic wing knobs cupped washers and carriage bolt eyebolt on the left side previously removed See Figure 3 Figure 3 Adjust the eyebolt on the chute directional control s...

Page 6: ...ALWAYS adjust the skid shoes into the HIGH position to allow the shave plate maximum clearance Figure 6 Adjust skid shoes as follows Loosen but do NOT remove the three hex nuts which fasten the skid shoe to the auger housing Raise or lower the skid shoe to desired position NOTE Make certain the entire base of both skid shoes are against the ground to avoid uneven wear on the skid shoes When one si...

Page 7: ... reached the correct adjustment refer to Traction Control Adjust ment in Making Adjustments Section SECTION 3 KNOW YOUR SNOW THROWER Figure 7 WARNING Read understand and follow all instructions and warnings on the machine and in this manual before operating Traction Control Auger Control Lock The traction control is located on the right handle Squeeze the traction control to engage the wheel drive...

Page 8: ... engine See Figure 7 Fuel Shut Off Valve If Equipped The fuel shut off valve located under fuel tank control fuel flow from tank See Figure 7 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 Gas And Oil Fill up Service the engine with gasoline and oil as instructed in the separa...

Page 9: ... snap back Allow it to rewind slowly while keeping a firm hold on the starter handle Repeat the previous steps until engine starts To Stop Engine Run engine for a few minutes before stopping to help dry off any moisture on the engine To help prevent possible freeze up of starter proceed as follows Electric Starter Connect power cord to switch box on engine then to 120 volt AC receptacle With the e...

Page 10: ...o the snow thrower housing See Figure 8 Figure 8 Adjust the support bracket inward or outward so that the spiral is fully engaged in the notches on the chute before retightening the hex nuts Skid Shoe Adjustment The space between the shave plate and the ground can be adjusted by raising or lowering the skid shoes Refer to Skid Shoe Adjustment in the Assembly Section Auger Control Adjustment Refer ...

Page 11: ...ls The wheels may be adjusted for two different methods of operation The adjustment is made by placing the click pins in one of two different holes on the right side of the unit See Figure 11 Figure 11 One Wheel Driving Insert the click pin only through the outside hole of the axle NOT the rim on the right side of the snow thrower This position gives power drive to the left wheel only making the u...

Page 12: ...umber 737 0170 Refer to Figure 9 Gear Case 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 Figure 14 IMPORTANT Do not overfill the gear case Damage to the seals could result Be sure the vent plug is free of grease in order to relieve pressure Drive and Shifting Mechanism A...

Page 13: ...bolts IMPORTANT NEVER replace the auger shear bolts with standard hex bolts Any damage to the auger gearbox or other components as a result of doing so will NOT be covered by your snow thrower s warranty Shave Plate and Skid Shoes The shave plate and skid shoes on the bottom of the snow thrower are subject to wear They should be checked periodically and replaced when necessary To remove the skid s...

Page 14: ...hereafter Replace the friction wheel rubber if any signs of wear or cracking are found Drain the gasoline from the snow thrower Tip the snow thrower up and forward so that it rests on the housing See Figure 19 Figure 19 Remove six self tapping screws from the frame cover underneath the snow thrower Remove the click pins which secure the wheels and remove the wheels from the axle Using a 7 8 wrench...

Page 15: ...ne from carburetor and fuel tank to prevent gum deposits from forming on these parts and causing possible malfunction of engine Run engine until fuel tank is empty and engine stops due to lack of fuel Drain carburetor by pressing upward on bowl drain located below the carburetor cover NOTE Fuel stabilizer is an acceptable alternative in minimizing the formation of fuel gum deposits during storage ...

Page 16: ...wire loose 2 Gas cap vent hole plugged 3 Exhaust port plugged 1 Connect and tighten spark plug wire 2 Remove ice and snow from gas cap Be certain vent hole is clear 3 Refer to the Maintenance section of the engine manual Engine overheats 1 Carburetor not adjusted properly 1 Refer to the engine manual or have the carburetor adjusted by an authorized engine service dealer Excessive vibration 1 Loose...

Page 17: ...0526 Worm Shaft 9 718 0186 Thrust Collar 10 721 0325 Grease Plug 11 721 0327 Grease Seal 12 736 0351 Flat Washer 76 x 1 5 x 030 13 736 0369 Flat Washer 508 x 1 0 x 020 14 736 0445 Flat Washer 76 x 1 5 x 060 15 741 0662 Flange Bearing 75 x 1 0 x 59 16 741 0663 Flange Bearing 503 ID x 75 OD 17 618 0413A Gear Assembly Complete 22 550 618 0414A Gear Assembly Complete 24 750 18 737 3000 Grease Fitting ...

Page 18: ...4 5 5 6 4 7 7 8 9 10 10 11 11 12 1 5 13 14 15 16 17 18 1 19 20 21 22 23 24 25 25 26 28 29 26 1 1 30 31 32 33 34 8 35 Drive Clutch Cable Auger Clutch Cable Auger Clutch Cable Blower Housing 36 20 20 37 37 38 39 40 42 42 43 41 44 27 ...

Page 19: ...in 26 714 0143 Click Pin 27 684 0042C Friction Wheel Assembly 28 656 0012A Friction Disc Wheel 29 684 0013B Wheel Shift Rod Assembly 30 746 0897 Drive Cable 31 748 0190 Spacer 32 684 0021 Friction Wheel Bracket Ass y 33 732 0264 Extension Spring 34 712 0711 Jam Nut 3 8 24 35 746 0898 Drive Cable 36 738 0869 Axle 37 784 5617A Friction Plate 38 735 0243 Friction Wheel 39 718 0301A Friction Wheel Hub...

Page 20: ...20 Models 550 750 1 2 3 4 5 6 7 8 9 10 11 12 14 15 13 16 10 9 18 19 20 21 22 23 13 25 23 22 26 18 27 28 13 30 30 31 32 31 32 33 16 18 35 34 36 37 38 39 41 40 42 17 40 39 29 24 43 31 18 31 43 ...

Page 21: ...sher 32 712 3010 Hex Nut 5 16 18 33 784 5576 21 66 Shave Plate 550 784 5581A 23 66 Shave Plate 750 34 710 0260 Carriage Bolt 5 16 18 x 62 35 684 0065 Impeller Assembly 36 715 0114 Pin 37 618 0413 22 Gear Assembly 550 618 0414 24 Gear Assembly 750 38 605 5252A 22 Spiral RH 550 605 5188A 24 Spiral RH 750 39 736 0188 Flat Washer 40 741 0493A Flange Bushing 41 605 5253A 22 Spiral LH 550 605 5189A 24 S...

Page 22: ...22 Models 550 750 1 2 3 4 5 6 7 4 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 ...

Page 23: ...14 710 1245 Lock Cap Screw 5 16 24 15 712 0181 Lock Jam Nut 3 8 16 16 756 0569 Pulley Half 17 736 0242 Bell Washer 18 736 0505 Flat Washer 19 736 0507 Washer 20 754 0430A Belt 21 756 0967 Auger Pulley 22 736 0247 Flat Washer 23 736 0331 Bell Washer 24 710 0696 Hex Cap Screw 3 8 24 25 748 0360 Pulley 26 710 0654A Hex Washer Screw 3 8 16 x 1 0 27 629 0071 Extension Cord 28 OEM 390 987 Electric Start...

Page 24: ...11 27 12 20 44 35 32 48 45 35 32 33 44 45 46 49 32 72 36 38 51 32 11 41 42 43 43 42 41 11 69 47 31 40 34 37 B B 54 62 55 66 59 53 63 64 59 55 65 60 4 54 52 61 55 56 57 8 68 13 10 73 67 19 70 39 39 12 17 2 15 20 11 25 14 16 for ground wire 71 of light ass y 58 30 74 74 ...

Page 25: ... Cotter Pin 3 32 x 75 36 732 0145 Compression Spring 36 x 1 0 37 732 0193 Comp Spring 39 x 6 x 88 38 732 0746 Torsion Spring 44 x 8 39 735 0199A Rubber Bumper 40 736 0105 Bell Washer 401 x 87 x 063 41 736 0119 Lock Washer 5 16 42 736 0509 Special Washer 35 x 72 x 13 43 746 0778 Cable Z Fitting 44 747 0877 Cam Rod 45 748 0362 Cam Handle Lock 46 748 0363 Handle Lock Pawl 47 784 5619A Shift Handle 48...

Page 26: ...26 ...

Page 27: ...27 ...

Page 28: ...hese items b Routine maintenance items such as lubricants filters blade sharpening and tune ups or adjustments such as brake adjustments clutch adjustments or deck adjust ments and normal deterioration of the exterior finish due to use or exposure c Log splitter pumps valves and cylinders have a separate one year warranty d White Outdoor Co does not extend any warranty for products sold or exporte...

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