Simplicity 755, 555 Troubleshooting, Engine fails to start, Engine starts hard or runs poorly

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Troubleshooting, Adjustment, & Service

TROUBLESHOOTING

This section provides troubleshooting and service instructions. Locate the problem and check the possible cause/remedy in the order listed.

Also, refer to the engine manufacturer’s Owner’s Manual for additional information.

For problems not covered here, contact your local deal- er.

WARNING

Before performing any adjustment or service to snowthrower, stop the engine and wait for moving parts to stop. Remove the key. To prevent accidental starting, disconnect the spark plug wire and fasten away from the plug.

PROBLEM

 

POSSIBLE CAUSE

 

REMEDY

 

 

 

 

 

Engine fails to start.

1.

Key is OFF.

1.

Push key in to the ON position.

 

2.

Failure to Prime cold Engine

2.

Press Primer Button twice and restart.

 

3.

Fuel valve is in CLOSED position.

3.

Turn valve to OPEN position.

 

4.

Out of fuel.

4.

Fill fuel tank.

 

5.

Choke OFF - cold engine.

5.

Turn choke to ON, set throttle to

 

 

 

 

FAST.

 

6.

Engine flooded.

6.

Turn choke to OFF; try starting.

 

7.

Spark plug not sparking.

7.

Check gap. Gap plug, clean elec-

 

 

 

 

trode, or replace plug as necessary.

 

8.

Water in fuel, or old fuel.

8.

Drain tank (Dispose of fuel at an

 

 

 

 

authorized hazardous waste facility).

 

 

 

 

Fill with fresh fuel.

 

 

 

 

 

Engine starts hard or runs poorly.

1.

Fuel mixture too rich.

1.

Move choke to OFF position.

 

2.

Carburetor adjusted incorrectly.

2.

See your dealer for adjustments.

 

3.

Spark plug faulty, fouled, or gapped

3.

Clean and gap, or replace.

 

 

improperly.

 

 

 

 

 

 

 

Auger does not rotate.

1.

Auger Control not engaged.

1.

Engage Auger Control.

 

2.

Foreign matter blocking auger.

 

 

 

 

 

2.

STOP engine and REMOVE the key.

 

 

 

 

DISCONNECT the spark plug wire.

 

 

 

 

Clear auger using a narrow board.

 

 

 

 

See warning in SAFETY RULES.

 

3.

Auger drive clutch rod slack.

3.

Tighten to remove slack. See auger

 

 

 

 

clutch rod adjustment.

 

4.

Auger drive belt slipping.

4.

Check auger drive belt adjustment.

 

5.

Broken belt.

5.

Replace belt.

 

6.

Shear pin broken.

6.

Replace shear pin.

 

 

 

 

 

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Contents Print Vendor Instructions Operator’s ManualsPage OPERATOR’S Manual ModelsPage Table of Contents Safety Rules & Information Do NotSafety Rules ChildrenMaintenance and Storage TrainingPreparation OperationIdentification Numbers CE Identification TAG MarkingsNorth American CE ModelsSafety Decals GeneralNorth American Model Decals CE Model DecalsCE Safety Icons & Compliance Specs Features, Controls, & Operation Features & Controls Control LocationsEngine Controls Starting ControlsUnits with Optional Electric Start Manual StartGround Speed Controls Auger ControlDeflector Controls Scraper HeightOperation Checks Before Each START-UPStarting the Engine Operating the Snowthrower Ground Speed SelectorEngine Speed Deflector Scraper BAR & Skid ShoesFREE-WHEELING Traction Drive Lock After Each USEKlik-Pin Outer Hole Regular ScheduleChecking Tire Pressure Check Auger Gear Case LubricationLubrication Check / Lubricate FREE-HAND LinkageStorage Long Term Storage Longer than 30 DaysStarting After Long Term Storage Troubleshooting Engine fails to startEngine starts hard or runs poorly Auger does not rotateScraper bar does not clean hard Auger does not stop when augerAuger rotates, but snow is not Thrown far enoughAdjustments Traction Drive Clutch ROD AdjustmentInitial Adjustment Run-In AdjustmentDischarge Chute Worm Assembly Adjustment Worm AssemblyAdjustment Screw Discharge ChuteAuger Drive Clutch ROD Adjustment Drive Belt AdjustmentRelease Auger Control. Auger must stop within 5 seconds Checking Auger Belt & Belt Guide Adjustments Adjusting Auger Drive BeltBelt Cover Adjustments & Service Drive Belt ReplacementAdjusting Auger Belt Guide Traction Drive Belt ReplacementService Auger Drive Belt ReplacementRoller Chain Replacement Shear PIN ReplacementPins Keeper linkSpecifications DimensionsEngine ChassisReplacement Parts Maintenance ItemsTechnical Manuals

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