Taking Care of the Guide Bar

2

 

 

KN

1

3

143BA026

 

NTurn the 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.

Chain type

Pitch

Minimum

 

 

 

groove

 

 

 

depth

 

Picco

3/8" P

0.20"

 

 

 

(5.0 mm)

Rapid

1/4"

0.16"

 

 

 

(4.0 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.

English

Air Filter System

The air filter system can be adapted to different operating conditions by the insertion of different air filters. Retrofitting is simple.

1

137BA011 KN

NStandard filter (1) with wire mesh (green filter housing) for normal operating conditions and use in winter.

NHD filter (2) (black filter housing) with felt prefilter for dry, very dusty operating environments

When dry, STIHL filters (standard and HD filters) attain a long service life.

NAlways use STIHL filters dry

Fouled air filters will impair engine performance, increase fuel consumption and make the machine more difficult to start.

MS 880

35