McCulloch MAC 250 B instruction manual Troubleshooting Table Cause Remedy

Page 16

TROUBLESHOOTING TABLE

WARNING: Always stop unit and disconnect spark plug before performing all of the recommended remedies below except remedies that require operation of the unit.

TROUBLE

CAUSE

REMEDY

Engine will not

1. ON/STOP switch in STOP

1.

Move ON/STOP switch to ON

start.

 

position.

 

position.

 

2. Engine flooded.

2.

See “Starting a Flooded Engine” in

 

3. Fuel tank empty.

 

Operation Section.

 

3.

Fill tank with correct fuel mixture.

 

4. Spark plug not firing.

4.

Install new spark plug.

 

5. Fuel not reaching

5.

Check for dirty fuel filter; replace.

 

 

carburetor.

 

Check for kinked or split fuel line;

 

6. Carburetor requires

 

repair or replace.

 

6.

Contact an authorised service dealer.

 

 

adjustment.

 

 

Engine will

1. Carburetor requires

1.

See “Carburetor Adjustment” in

not idle

 

adjustment.

 

Service and Adjustments Section.

properly.

2. Crankshaft seals worn.

2.

Contact an authorised service dealer.

 

3. Compression low.

3.

Contact an authorised service dealer.

Engine will not

1.

Air filter dirty.

1. Clean or replace air filter.

accelerate,

2. Spark plug fouled.

2. Clean or replace plug

lacks power,

3.

Carburetor requires

 

and regap.

or dies under

3. Contact an authorised service dealer.

a load.

4.

adjustment.

4. Contact an authorised service dealer.

 

Carbon build-up on

 

 

muffler outlet screen.

 

 

 

5.

Compression low.

5. Contact an authorised service dealer.

Engine

1.

Choke partially on.

1.

Adjust choke.

smokes

2.

Fuel mixture incorrect.

2.

Empty fuel tank and refill with

excessively.

3.

Air filter dirty.

 

correct fuel mixture.

 

3.

Clean or replace air filter.

 

4.

Carburetor requires

4.

Contact an authorised service dealer.

 

 

adjustment.

 

 

Engine runs

1. Fuel mixture incorrect.

1. Empty fuel tank and refill with

hot.

2. Spark plug incorrect.

 

correct fuel mixture.

 

2. Replace with correct spark plug.

 

3. Carburetor requires

3. Contact an authorised service dealer.

 

 

adjustment.

 

 

 

4. Carbon build-up on

4. Contact an authorised service dealer.

 

 

muffler outlet screen.

 

 

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Contents Betriebsanweisung Manuel D’INSTRUCTIONSManual DE Instrucciones Identification What is WHAT? Identification of Symbols Safety RulesOperator Safety Unit / Maintenance SafetyAny other way before using the unit Hazard ZoneAssembly Fuel SafetyCutting Safety Carton ContentsAssembly of Shoulder Harness Shoulder Harness AdjustmentTools Required Attaching the HandlebarAssembly Information Trimmer Head Installation of the Trimmer HeadConfiguring Your Unit Attaching the ShieldInstallation of the Metal Blade Assembly Information Weed BladeAttaching the Transport Guard HOW to Stop Your Unit HOW to Start Your UnitOperation Fueling EngineStarting a Warm Engine Starting a Flooded EngineOperating Position Operating Instructions for USE with Trimmer HeadCutting Methods Operating Instructions for USE with Weed BladeMaintenance Inspect and Clean Unit and LabelsCheck for Loose Fasteners and Parts Check for Damaged or Worn PartsService and Adjustments Clean AIR FilterReplace Spark Plug Replacing the LinePage Storage Troubleshooting Table Cause Remedy Declaration of Conformity EC Declaration of Conformity Only applies to EuropeTechnical Data Sheet

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