McCulloch 115376827, MC125, 966625001 instruction manual Troubleshooting Table Cause Remedy

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. Engine flooded.		1.	See “Starting a Flooded Engine” in
start.				Operation Section.
	2. Fuel tank empty.		2.	Fill tank with correct fuel mixture.
	3. Spark plug not firing.		3.	Install new spark plug.
	4. Fuel not reaching		4.	Check for dirty fuel filter; replace.
		carburetor.		Check for kinked or split fuel line;
				repair or replace.
	5. Carburetor requires		5.	Contact an authorized service dealer.
		adjustment.
Engine will	1.	Carburetor requires	1.	See “Carburetor Idle Speed Adjustment”
not idle		adjustment.		in Service and Adjustments Section.
properly.	2.	Crankshaft seals worn.	2.	Contact an authorized service dealer.
	3.	Compression low.	3.	Contact an authorized 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 authorized service dealer.
a load.	4.	adjustment.	4.	Contact an authorized service dealer.
		Carbon build-up on
		muffler outlet screen.
	5.	Compression low.	5.	Contact an authorized service dealer.
Engine	1.	Fuel mixture incorrect.	1.	Empty fuel tank and refill with
smokes				correct fuel mixture.
excessively.	2.	Air filter dirty.	2.	Clean or replace air filter.
	3.	Carburetor requires	3.	Contact an authorized service dealer.
		adjustment.
Engine runs	1. Fuel mixture incorrect.		1.	See “Fueling Engine” in Operation
hot.	2. Spark plug incorrect.		2.	section.
				Replace with correct spark plug.
	3. Carburetor requires		3.	Contact an authorized service dealer.
		adjustment.
	4. Carbon build-up on		4.	Contact an authorized service dealer.
		muffler outlet screen.

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