McCulloch MC550, 433691, 96083000300 manual Troubleshooting, Problem Cause Correction

Page 16

TROUBLESHOOTING

PROBLEM

 

CAUSE

 

CORRECTION

 

 

 

 

 

Will not start

1.

Out of fuel.

1.

Fill fuel tank.

 

2.

Engine not “CHOKED” properly.

2.

See “TO START ENGINE” in the Operation section.

 

3.

Engine flooded.

3.

Wait several minutes before attempting to start.

 

4.

Dirty air cleaner.

4.

Clean or replace air cleaner cartridge.

 

5.

Water in fuel.

5.

Empty fuel tank and carburetor, and refill tank with

 

 

 

 

fresh gasoline.

 

6.

Clogged fuel tank.

6.

Remove fuel tank and clean.

 

7.

Loose spark plug wire.

7.

Ensure spark plug wire is seated properly on

 

 

 

 

plug.

 

8.

Bad spark plug or improper gap.

8.

Replace spark plug or adjust gap.

 

9.

Carburetor out of adjustment.

9.

Make necessary adjustments.

 

 

 

 

 

Hard to start

1.

Throttle control not set properly.

1.

Place throttle control in “FAST” position.

 

2.

Dirty air cleaner.

2.

Clean or replace air cleaner cartridge.

 

3.

Bad spark plug or improper gap.

3.

Replace spark plug or adjust gap.

 

4.

Stale or dirty fuel.

4.

Empty fuel tank and refill with fresh gasoline.

 

5.

Loose spark plug wire.

5.

Ensure spark plug wire is seated properly on plug.

 

6.

Carburetor out of adjustment.

6.

Make necessary adjustments.

 

 

 

 

 

Loss of power

1.

Engine is overloaded.

1.

Set depth stake for shallower tilling.

 

2.

Dirty air cleaner.

2.

Clean or replace air cleaner cartridge.

 

3.

Low oil level/dirty oil.

3.

Check oil level/change oil.

 

4.

Faulty spark plug.

4.

Clean and regap or change spark plug.

 

5.

Oil in fuel.

5.

Empty and clean fuel tank and refill, and clean

 

 

 

 

carburetor.

 

6.

Stale or dirty fuel.

6.

Empty fuel tank and refill with fresh gasoline.

 

7.

Water in fuel.

7.

Empty fuel tank and carburetor, and refill tank with

 

 

 

 

fresh gasoline.

 

8.

Clogged fuel tank.

8.

Remove fuel tank and clean.

 

9.

Spark plug wire loose.

9.

Connect and tighten spark plug wire.

 

10.

Dirty engine air screen.

10.

Clean engine air screen.

 

11.

Dirty/clogged muffler.

11.

Clean/replace muffler.

 

12.

Carburetor out of adjustment.

12.

Make necessary adjustments.

 

13.

Poor compression.

13.

Contact an authorized service center/department.

 

 

 

 

 

Engine overheats

1.

Low oil level/dirty oil.

1.

Check oil level/change oil.

 

2.

Dirty engine air screen.

2.

Clean engine air screen.

 

3.

Dirty engine.

3.

Clean cylinder fins, air screen, muffler area.

 

4.

Partially plugged muffler.

4.

Remove and clean muffler.

 

5.

Improper carburetor adjustment.

5.

Adjust carburetor to richer position.

 

 

 

 

 

Excessive bounce/

1.

Ground too dry and hard.

1.

Moisten ground or wait for more favorable soil

difficult handling

 

 

 

conditions.

 

2.

Depth stake incorrectly adjusted.

2.

Adjust depth stake.

 

 

 

 

 

Soil balls up or clumps

1.

Ground too wet.

1.

Wait for more favorable soil conditions.

 

 

 

 

 

Engine runs but tiller

1.

Tine control is not engaged.

1.

Engage tine control.

won’t move

2.

V-belt is off pulley(s).

2.

Inspect V-belt.

 

 

 

 

 

Engine runs but labors

1.

Tilling too deep.

1.

Set depth stake for shallower tilling.

when tilling

2.

Throttle control not properly adjusted.

2.

Check throttle control setting.

 

3.

Carburetor out of adjustment.

3.

Make necessary adjustments.

 

 

 

 

 

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Contents MC550 Safety Rules Maintenance and StorageTraining PreparationTable of Contents Tools Required for Assembly AssemblyContents of Hardware Pack Tilling Width To Install Depth Stake See FigTine Operation Operation Meets Ansi Safety RequirementsKnow Your Tiller HOW to USE Your Tiller Stopping See FigTine Operation See Fig TillingADD Gasoline Before Starting EngineCheck Engine OIL Level See Fig Tilling Hints Breaking in Your TillerCultivating Maintenance Schedule MaintenanceGeneral Recommendations To Change Engine OIL See Fig EngineAIR Filter Cleaning Cooling System See FigMuffler Spark PlugService and Adjustments To Remove Clutch HOUSING/ENGINE Assembly see FIGTiller Tine ArrangementTo Adjust Carburetor To Replace V-BELT seeStorage OtherFuel System Engine OILTroubleshooting Problem Cause CorrectionTiller - Model Number MC550 DecalsENGINE, TRANSMISSION, and Tines 421338 Engine HANDLE, WHEEL, and Depth Stake Tiller - Model Number MC550 Limited Warranty

96083000300, MC550, 433691 specifications

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