Manual Stiga SP 375Q (page 42 of 460) (All languages)

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16 MAINTENANCE AND STORAGE

Sharpen the chain as follows (Fig. 24):

– Switch off the engine, release the chain brake

and secure the bar with the chain in a vice so that

the chain can run smoothly.

– Tighten the chain if it is loose.

– Mount the file in the guide and then insert it in the

tooth at a constant angle from the cutting edge.

– Sharpen in a forward motion a few times and re-

peat this on all the cutting edges facing the same

way (right or left).

– Turn the bar over in the vice and repeat on all the

other cutting edges.

– Check that the limiter tooth does not stick out fur-

ther than the inspection instrument and file any

projecting parts with a flat file, rounding off the

edge.

– After sharpening, remove all traces of filing and

dust and lubricate the chain in an oil bath.

Replace the chain whenever:

– The length of the cutting edges reduces to 5

mm or less;

– There is too much play between the links and the

rivets.

BAR MAINTENANCE (Fig. 25)

To avoid asymmetrical wear on the bar, make sure

it is turned over periodically.

To keep the bar in perfect working order, proceed

as follows:

– grease the bearings on the nose sprocket (if

present) with the syringe;

– Clean the bar groove with the scraper (not in-

cluded);

– clean the lubrication holes;

– with a flat file, remove burr from the edges and

level off the guides.

Replace the bar whenever:

– the groove is not as deep as the height of the

drive links (which must never touch the bottom);

– the inside of the guide is worn enough to make

the chain lean to one side.

EXTRAORDINARY MAINTENANCE

All maintenance operations not foreseen in this

manual must be performed exclusively by your

dealer.

All and any operations performed in unauthorised

centres or by unqualified persons will totally inval-

idate the warranty.

STORAGE

After every work stint, clean the machine thor-

oughly to remove all dust and debris, and repair or

replace any faulty parts.

The machine must be stored in a dry place away

from the elements and with the bar cover correctly

fitted.

Chain maintenance table

The specifications of the chain and the bar homologated for this machine

are shown in the “EC Conformity Statement” provided. Do not use other types of chains or bars

for safety reasons.

The table gives the sharpening data for different types of chains, but this does not mean you

can use different chains from the homologated one.

WARNING!

Chain pitch Limiter tooth level (a) File diameter (d)

inches mm inches mm inches mm

3/8 Mini 9.32 0.018 0.45 5/32 4.0

0.325 8.25 0.026 0.65 3/16 4.8

3/8 9.32 0.026 0.65 13/64 5.2

0.404 10.26 0.031 0.80 7/32 5.6

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Stiga SP 375Q Manual

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