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

Shroud

Remove shroud

The shroud catch may vary depending on the version.

Version A

143BA057 KN

NUse a suitable tool to open the catch by turning it 90° to the left

NLift off the shroud

Version B

143BA056 KN

NTurn lever 90" to the left N Lift off the shroud

Refitting the shroud

Install parts in reverse order.

MS 170, MS 170 C, MS 180, MS 180 C

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