STIHL MS 460 Rescue manual 50

Erratic idling behavior, poor acceleration

(even though you have opened low speed screw one quarter of a turn)

Idle setting is too lean.

:Turn the low speed adjusting screw

(L) counterclockwise until engine runs and accelerates smoothly.

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

Fine Tuning for Operation at High Altitude

A slight correction of the setting may be necessary if engine power is not satisfactory when operating at high altitude:

:Check the standard setting.

:Warm up the engine.

:Turn high speed screw (H) slightly

clockwise (leaner). On models with H = 3/4 , turn no further than stop.

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

Rescue Saw

Spark Arresting Screen in Muffler*

:If the engine is down on power, check the spark arresting screen in the muffler

All models

:Allow muffler to cool down.

:Remove the bar and chain.

The following screwed joints are secured with threadlocking adhesive (Loctite 243). Before assembling, coat the screws with Loctite 243 or equivalent adhesive – if necessary, have this work performed by your STIHL dealer.

	1		1
	1	3	KN
2			179BA006

: Take out the screws (1).

: Remove the chain catcher (2) and splatter shield (3).

*see "Guide to Using this Manual"

English / USA

MS 460 Magnum only

3

2

1	1	KN
		176BA010

:Take out the screws (1).

:Remove the cover plate (2).

:Remove the spark arresting screen (3).

:Clean spark arresting screen. If screen is damaged or heavily carbonized, fit a new one.

:Refit the spark arresting screen in the reverse sequence.

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