McCulloch 96083000400, 532 43 21-09, MC900 manual Troubleshooting Points

Page 16

TROUBLESHOOTING POINTS

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.

Make sure 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.

Make sure 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 and wheels 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.

Wheels and depth stake incorrectly adjusted.

2.

Adjust wheels and 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 not correctly adjusted.

2.

Inspect/adjust V-belt.

 

3.

V-belt is off pulley(s).

3.

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.

 

 

 

 

 

16

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Contents MC900 Safety Rules Maintenance and StorageTraining PreparationTable of Contents Assembly Contents of Hardware PackUnpack Carton & Install Handle See Fig Handle HeightTilling Width Tine OperationOperation Meets Ansi Safety RequirementsKnow Your Tiller HOW to USE Your Tiller Stopping See FigTine Operation See Fig TillingBefore Starting Engine To TransportFill Engine with OIL See Fig ADD GasolineTilling Hints Breaking in Your TillerCultivating Maintenance Lubrication ChartGeneral Recommendations Before Each USEEngine AIR Cleaner See FigTo Change Engine OIL See Figs Cleaning Cooling System See FigMuffler Spark PlugService and Adjustments To Adjust Handle Height See FigTiller Tine ArrangementTo Adjust Carburetor Belt ReplacementTo Replace V-BELT See Fig To Remove Belt Guard See FigStorage OtherFuel System Engine OILTroubleshooting Points Service Notes Service Notes Service Notes Limited Warranty

MC900, 96083000400, 532 43 21-09 specifications

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