STIHL MS 250 manual Short-term storage, Long-term storage

NOTICE

Always slacken off the chain again after finishing work. The chain contracts as it cools down. If it is not slackened off, it can damage the crankshaft and bearings.

Short-term storage

Wait for engine to cool down. Keep the machine with a full tank of fuel in a dry place, well away from sources of ignition, until you need it again.

Long-term storage

See "Storing the machine"

Taking Care of the Guide Bar

	2
		KN
1	3	143BA026

NTurn the guide bar over – every time you sharpen the chain and every time you replace the chain – this helps avoid one-sided wear, especially at the nose and underside of the bar.

NRegularly clean the oil inlet hole (1), the oilway (2) and the bar groove

(3).

NMeasure the groove depth – with the scale on the filing gauge (special accessory) – in the area used most for cutting.

		English
Chain	Chain pitch	Minimum
type		groove depth
Picco	1/4" P	0.16" (4.0 mm)
Rapid	1/4"	0.16" (4.0 mm)
Picco	3/8" P	0.20" (5.0 mm)
Rapid	3/8"; 0.325"	0.24" (6.0 mm)
Rapid	0.404"	0.28" (7.0 mm)

If groove depth is less than specified:

NReplace the guide bar.

The drive link tangs will otherwise scrape along the bottom of the groove – the cutters and tie straps will not ride on the bar rails.

MS 250 39