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DPC-1316
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Defort DPC-1316 [18/44] Carburettor adjustment

Lack of concentration can lead to kickback if the kick-

back zone of the bar accidentally touches a branch,

nearby tree or some other object.

Have control over the workpiece. If the pieces you

intend to cut are small and light, they can jam in the

saw chain and be thrown towards you. This is not nec-

essarily dangerous in itself, but you may be surprised

and lose control of the saw. Never saw stacked logs or

branches without ﬁ rst separating them. Only saw one

log or one piece at a time. Remove the cut pieces to

keep your working area safe.

4 Never use the chain saw above shoulder height and

try not to cut with the tip of the bar. Never use the chain

saw one-handed!

5 You must have a steady stance in order to have full

control over the chain saw. Never work standing on a

ladder, in a tree or where you do not have ﬁ rm ground

to stand on.

6 Always use a fast cutting speed, i.e. full throttle.

7 Take great care when you cut with the top edge of the

bar, i.e. when cutting from the underside of the object.

This is known as cutting on the push stroke. The chain

tries to push the chain saw back towards the user. If the

saw chain is jamming, the saw may be pushed back

at you.

8 Unless the user resists this pushing force there is a

risk that the chain saw will move so far backwards that

only the kickback zone of the bar is in contact with the

tree, which will lead to a kickback.

Cutting with the bottom edge of the bar, i.e. from the

top of the object downwards, is known as cutting on

the pull stroke. In this case the chain saw pulls itself

towards the tree and the front edge of the chain saw

body rests naturally on the trunk when cutting. Cutting

on the pull stroke gives the operator better control over

the chain saw and the position of the kickback zone.

9 Follow the instructions on sharpening and maintain-

ing your bar and chain. When you replace the bar and

chain use only combinations that are recommended by

us.

GENERAL

The user must only carry out the maintenance and

service work described in this Operator’s Manual. More

extensive work must be carried out by an authorised

service workshop.

CARBURETTOR ADJUSTMENT

Your DeFort product has been designed and manufac-

tured to speciﬁ cations that reduce harmful emissions.

FUNCTION

• The carburettor governs the engine’s speed via the

throttle control. Air and fuel are mixed in the car-

burettor. The air/fuel mixture is adjustable. Correct

adjustment is essential to get the best performance

from the machine.

• The T-screw regulates the throttle setting at idle

speed. If the T-screw is turned clockwise this gives

a higher idle speed; turning it anti-clockwise gives a

lower idle speed.

Basic settings and running in

The basic carburettor settings are adjusted during test-

ing at the factory. Fine adjustment should be carried

out by a skilled technician.

Rec. idle speed: See the Technical data section.

Fine adjustment of the idle speed T

Adjust the idle speed with the T-screw. If it is neces-

sary to re-adjust, turn the T-screw clockwise while

the engine is running, until the chain starts to rotate.

Then turn anticlockwise until the chain stops. When

the idle speed is correctly adjusted the engine should

run smoothly in every position and the engine speed

should be safely below the speed at which the chain

starts to rotate.

WARNING! Contact your servicing dealer, if

the idle speed setting cannot be adjusted so

that the chain stops. Do not use the chain

saw until it has been properly adjusted or repaired.

MAINTENANCE SCHEDULE

The following is a list of the maintenance that must be

performed on the machine. Most of the items are de-

scribed in the Maintenance section.

Defort DPC-1316 [18/44] Carburettor adjustment

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