STIHL MS 192 T Spark Arresting Screen in Muffler, Checking the Spark Plug

English

Erratic idling behavior, poor acceleration

NCarry out standard setting on low speed screw (L).

NIdle setting is too lean: Turn the low speed screw (L) counterclockwise until the engine runs and accelerates smoothly.

It is usually necessary to change the setting of the idle speed screw (LA) after every correction to the low speed screw (L).

Fine Tuning for Operation at High Altitude

A slight correction of the setting may be necessary if engine does not run satisfactorily:

NCheck the standard setting. N Warm up the engine.

NTurn high speed screw (H) slightly clockwise (leaner) – no further than stop.

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

Spark Arresting Screen in Muffler

In some countries the muffler is equipped with a spark arresting screen.

NIf the engine is down on power, check the spark arresting screen in the muffler.

NWait for the muffler to cool down. N Remove the sprocket cover.

NTake out the screw (1).

NRemove the baffle plate (2).

NRemove the spark arresting screen (3).

NClean the spark arresting screen. If the screen is damaged or heavily carbonized, fit a new one.

NRefit the spark arresting screen. N Fit the baffle plate.

Checking the Spark Plug

000BA002 KN

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.

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

NRemove spark plug – see "Starting / Stopping the Engine".

NClean dirty spark plug.

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

NUse only resistor type spark plugs of the approved range.

34 MS 192 T, MS 192 TC