Instruction Manual

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MSE 250 C

English

34

N Turn 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.

N Regularly clean the oil inlet hole (1),

the oilway (2) and the bar groove

(3).

N Measure the groove depth – with the

scale on the filing gauge (special

accessory) – in the area used most

for cutting.

If groove depth is less than specified:

N Replace 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.

N Use a dry brush or similar tool to

clean the cooling slots at regular

intervals – see "Maintenance

Chart".

Taking Care of the Guide Bar

Chain

type

Chain pitch Minimum

groove depth

Picco 1/4" P 0.16" (4.0 mm)

Rapid 1/4" 0.16" (4.0 mm)

2

3

1

143BA026 KN

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)

Motor Cooling

9913BA013 KN