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17

Service

PROBLEM

POSSIBLE CAUSE

REMEDY

Auger rotates, but snow is not
thrown far enough

1. Chute deflector too low.

2. Engine speed too slow.

3. Ground speed too fast.
4. Snowthrower discharge chute clogged. 

5. Auger belt loose or worn.

1. Adjust deflector as necessary.

2. Set speed to full throttle.

3. Use slower Speed Selector setting.
4. STOP engine and REMOVE the key.

DISCONNECT the spark plug wire.
Clear auger using a narrow board.
See warning in SAFETY RULES.

5. Check Auger Drive Belt Adjustment

Scraper bar does not clean hard
surface.

1. Skid Shoes improperly adjusted.

1. RAISE Skid Shoes (this lowers the

Scraper Bar).

Auger does not stop when auger
lever is released

1. Auger clutch rod too tight or bent.

2. Auger drive belt out of adjustment.

3. Auger belt guide out of adjustment.

1. Loosen or straighten clutch rod.

2. Adjust auger belt.

3. Adjust auger belt guide.

Scraper bar picks up and throws
stones on gravel drive.

1. Skid shoes improperly adjusted.

1. LOWER Skid Shoes (this raises the

scraper bar.)

Poor traction

1. Tires slipping.

1. Check tire pressure and tread.

Snowthrower does not stop when
drive lever is released

1. Traction drive clutch 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, broken, or stretched.
3. Drive roller chain damaged.
4. Traction Lock Pins in Free-Wheeling

position (OUTER hole).

1. Tighten to remove slack. See adjust-

ment procedure.

2. Replace drive belt.
3. Replace chain.
4. Change Traction Lock Pins to INNER

hole to engage traction drive.

Discharge control is difficult to
operate.

1. Gearing needs lubrication
2. Worm gear not adjusted properly.

3. Control rod gears misaligned.

1. Oil or grease as required.
2. Adjust worm gear. See adjustment

procedure.

3. Adjust gear bracket. See adjustment

procedure.

Snowthrower veers to one side.

1. Tires pressure not equal.
2. One wheel is set in Free-Wheeling

mode. (Traction Lock Pin is in the
OUTER hole).

1. Check tire pressure.
2. Make certain BOTH Traction Lock

Pins are in the INNER holes (to
engage traction drive).

Excessive vibration.

1. Loose parts or damaged auger.

1. STOP engine and REMOVE the key.

DISCONNECT the spark plug wire.

Tighten all hardware. Replace auger

if necessary. If vibration continues,

see your dealer.

Drive fails to move snowthrower
at slow speeds.

1. Traction Drive out of adjustment.

1. Readjust drive, or shift Speed

Selector setting up one speed faster.

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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