Manual Al-ko BKS 4040 (page 42 of 448) (English, German, Dutch, Danish, French, Italian, Polish, Swedish, Spanish, Norwegian, Finnish)

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Maintenance

42 BKS 3835 / BKS 4040

3. Guide bar

When the guide bar is dismounted, remove sawdust in the bar groove

and the oiling port.

Grease the nose sprocket from the feeding port on the tip of the bar.

(1) Oiling port

(2) Grease port

(3) Sprocket

4. Others

Check for fuel leakage and loose fastenings and damage to major

parts, especially handle joints and guide bar mounting. If any defects

are found, make sure to have them repaired before operating again.

Periodical service points

1. Cylinder fins

Dust clogging between the cylinder fins will cause overheating of the

engine. Periodically check and clean the cylinder fins after removing the

air cleaner and the cylinder cover. When installing the cylinder cover,

make sure that switch wires and grommets are positioned correctly in

place.

2. Fuel filter

(a) Using a wire hook, take out the filter from the filler port.

(1) Fuel filter

(b) Disassemble the filter and wash, or replace with a new one if nee-

ded.

WARNING!

After removing the filter, use a pinch to hold the end of the

suction pipe.

When assembling the filter, take care not to allow filter fibers

or dust inside the suction pipe.

3. Spark plug

Clean the electrodes with a wire brush and reset the gap to 0.65mm as

necessary.

Spark plug type: NHSP LD L8RTF or CHAMPION RCJ7Y or NGK

BPMR7A

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Al-ko BKS 4040 Manual

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