STIHL MS 150 TC Spark Plug

English

NOTICE

After returning from high altitude, reset the carburetor to the standard setting.

If the setting is too lean there is a risk of engine damage due to insufficient lubrication and overheating.

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Spark Plug

If engine is down on power, difficult to start or runs poorly at idling speed, first check the spark plug.

Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly eroded.

Wrong fuel mix (too much engine oil in the gasoline), a dirty air filter and unfavorable running conditions (mostly at part throttle etc.) affect the condition of the spark plug. These factors cause deposits to form on the insulator nose which may result in trouble in operation.

Removing the Spark Plug

NMove the Master Control lever to 0 or STOP.

3006BA001 KN

NDisengaging the Chain Brake

2
1	KN
	2011BA050

NUnscrew the nut (1) and remove the sprocket cover (2).

2011BA029 KN

NPull off the spark plug boot. N Unscrew the spark plug.

Checking the Spark Plug

	KN
A	000BA039

NClean dirty spark plug.

NCheck electrode gap (A) and readjust if necessary – see "Specifications."

NUse only resistor type spark plugs of the approved range.

MS 150 TC