Maintenance Schedule; Carburettor Adjustment - Defort DPC-2220 Bedienungsanleitung

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.
18
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.