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21

Service

DRIVE BELT ADJUSTMENT 

(Continued)

Adjusting Auger Belt Guide

1. With the Auger Control still fully depressed, adjust

the Auger Belt Guide so that there is a 1/64” gap
(1/32” Maximum) between the end of the guide and
the belt (Figure 27), making certain the guide is NOT
putting pressure on the belt.

2. Making certain the Auger Belt Guide does NOT

move while doing so, tighten the Auger Belt Guide
Screw (Figure 27) to secure the guide.

3. Check the adjustment on the Auger Belt Guide

(Figure 27) to make certain that the gap between the
belt and the belt guide is correct.

4. Disengage the Auger Control by removing the card-

board tube (or other means used to temporarily
secure the control.)

5. Test the unit  by following the steps under the

“Checking Auger Belt & Belt Guide Adjustments”
above.

Figure 27.  Auger Belt Guide Adjustment

WARNING

Failure to properly adjust the Auger Belt Guide
may cause auger to rotate when Auger Control
has not been depressed.

Belt Guide
& Gap

Belt Guide
Screw

Figure 28.  Traction Drive Pulley 

(Lower Cover Removed For Clarity)

Traction Drive Belt & Pulley

DRIVE BELTS AND REPLACEMENT

The snowthrower has two drive belts, one for the
Traction Drive—which transmits engine power to the
wheels, and a second for the Auger Drive—which trans-
mits engine power to the auger mechanism.

Each of these drive belts are of special construction and
should be replaced only with Genuine Replacement
Belts which match the original equipment belts. These
are available from your dealer. (See COMMON
REPLACEMENT PARTS at the back of this manual for
the correct part numbers for each of the belts.)

Traction Drive Belt Replacement

1. Disconnect spark plug wire and fasten it away from

the spark plug.

2. Remove belt cover.

3. Pull the traction drive belt idler pulley arm (See

Figure 23) away from the belt to relieve tension, and
slide the belt off the engine pulley.

4. Slip the belt off from around the traction pulley (See

Figure 28) and pull the belt out of the unit between
the auger pulley and the traction pulley (the lower
cover need not be removed for this step).

5. Reverse the procedure to install the new belt. Be

sure there are no twists in the belt, and that the belt is
properly seated in the pulley grooves.

6. Replace the belt cover.

7. Start the unit, and check the traction drive for proper

operation. See "Traction Clutch Rod Adjustment" for
adjustment procedures.

00

WARNING

Snowthrower must move only when the traction
Drive Control is depressed, and must stop when
the lever is released (disengaged).

Summary of Contents for 1693646 555M

Page 1: ...a particular manual is the page IMMEDIATELY AFTER the front cover Check the front cover for the individual part number typically a 171xxxx number BODY The body of the manual is identical regardless o...

Page 2: ...THIS PAGE INTENTIONALLY BLANK...

Page 3: ...cription 1693646 555M 5HP Snowthrower Manual Start 1693647 555M 5HP Snowthrower Manual Start Export 755 Models Mfg No Description 1693648 755M 7HP OHV Snowthrower Manual Start 1693649 755M 7HP OHV Sno...

Page 4: ...MANUFACTURING INC 500 N Spring Street PO Box 997 Port Washington WI 53074 0997 www simplicitymfg com Copyright 1999 Simplicity Manufacturing Inc All Rights Reserved Printed in USA...

Page 5: ...Shear Pin Replacement 23 Auger Shaft Bearing Replacement 23 Discharge Chute Worm Assy Adjustment 24 Discharge Chute Control Rod Gear Adjustment 24 Checking Tire Pressure 24 SPECIFICATIONS 25 REPLACEME...

Page 6: ...surface Handle gasoline with care it is highly flammable a Use approved gasoline container b Never remove the fuel tank cap or add gasoline to a running or hot engine c Never fill the fuel tank indoo...

Page 7: ...e for electric starting Adjust snow discharge angle for safe flow when oper ating near glass enclosures automobiles window wells dropoffs etc Do not overload machine capacity by clearing snow at too f...

Page 8: ...WER Shut off engine before unclogging discharge chute 1716533 Part No 1716533 Discharge Chute Danger Decal Part No 1715556 WARNING Main Dash Decal Safety Signs Decals Part No 1715555 Auger Control Dec...

Page 9: ...nce Chart A B C D E F G H Speed Selector Drive Control Auger Control Chute Direction Control Chute Deflector Chute Deflector Knob Skid Shoes Traction Lock Pins Selects Forward Speeds 1 5 Reverse Speed...

Page 10: ...ld engine E Throttle Lever The throttle lever E Figure 4 5 controls the engine speed For best overall perfor mance the throttle lever should be set to the FAST position Use the SLOW position only for...

Page 11: ...w as the lever is depressed and disengages the auger drive when the lever is released DEFLECTOR CONTROLS D Chute Direction Control The Chute Direction Control D Figures 6 7 allows the discharge chute...

Page 12: ...et the deflector at the desired angle 10 Check the Speed Selector A Figure 6 for smooth operation The control must move freely into each speed position gate and remain in position when released If the...

Page 13: ...the engine starts and begins to operate evenly open the Choke G Figures 8 9 slowly and set the Throttle Lever to SLOW If the engine falters turn the Choke Knob clockwise until the engine runs smooth...

Page 14: ...Rod Adjustment in the Service Section for the adjustment procedure GROUND SPEED SELECTOR Use the Speed Selector A Figure 10 to control the drive speed of the snowthrower There are five forward speeds...

Page 15: ...alt the scraper bar should scrape the surface On surfaces such as gravel the scraper bar should be high enough so that it will not pick up gravel or debris The height of the scraper bar is controlled...

Page 16: ...e moving parts as the unit cools After each period of use follow these steps to prevent freeze up caused by ice formation in and around the engine controls and external parts 1 Before shutting off the...

Page 17: ...3 Clean the snowthrower thoroughly Coat exposed bare metal parts with a quality paint available from you dealer or a light film of grease oil or automotive wax 4 Store snowthrower in the wheels down...

Page 18: ...n the auger shaft are lubricated regularly If auger rusts to shaft damage to worm gear may occur if shear pins do not break To prevent wheels rusting to axles it is also necessary to remove the wheels...

Page 19: ...15 Regular Maintenance 01 MAINTENANCE RECORDS...

Page 20: ...ments 3 Clean and gap or replace Auger does not rotate 1 Auger Control not engaged 2 Foreign matter blocking auger 3 Auger drive clutch rod slack 4 Auger drive belt slipping 5 Broken belt 6 Shear pin...

Page 21: ...lutch rod bent or too tight 1 Loosen rod to remove slack or replace See adjustment procedure Snowthrower does not drive when drive lever is engaged 1 Traction drive clutch rod loose 2 Drive belt loose...

Page 22: ...ighten top hex nut while holding rod Tighten just until slack in rod is removed 3 Tighten lower hex nut securely Figure 21 Traction Drive Clutch Rod Adjustment Traction Drive Clutch Rod Traction Drive...

Page 23: ...drive belt ten sion may require adjustment See Adjusting Auger Drive Belt on next page Figure 23 Drive Belt Paths DRIVE BELT ADJUSTMENT The snowthrower is equipped with two drive belts locat ed just...

Page 24: ...rol and measure the expanded length of the spring The spring should expand 19 64 5 16 If the spring deflection is less than 19 64 5 16 the auger idler pulley must be adjusted Proceed to step 5 5 Using...

Page 25: ...Traction Drive which transmits engine power to the wheels and a second for the Auger Drive which trans mits engine power to the auger mechanism Each of these drive belts are of special construction a...

Page 26: ...install the new belt on the auger drive pulley 10 Position belt stop to provide 1 8 clearance between stop and belt and and tighten securely 11 Replace lower cover 12 Return unit to normal upright ope...

Page 27: ...Do NOT replace shear pins with anything other than the correct grade replacement shear pin See the REPLACEMENT PARTS section at the back of this man ual for the correct part numbers Use of bolts screw...

Page 28: ...Direction Gear Adjustments CHUTE DIRECTION CONTROL ROD GEAR ADJUSTMENT If the Discharge Chute becomes difficult to rotate or begins to operate erratically the Chute Direction Control rod gears may re...

Page 29: ...ward and two reverse Axle Solid Tire Inflation 20 psi 136 kPa AUGER HOUSING Construction Welded steel stampings Effective Width 22 in 55 cm Auger Opening Height with Extension 16 5 in 42 cm Chute Rota...

Page 30: ...evening snowthrowing Electric Start Kit 120V AC Offers operator the convenience of electric starting Available for all models Standard on some models Drift Cutters Helps break through drifts TECHNICA...

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