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High speed jet H
This chain saw is equipped with a carburettor that has a
built-in fixed high speed jet.
CAUTION! There is an integrated speed governor in the
ignition that limits the maximum speed to 12,000 rpm.
Adjusting the jet therefore has no effect on the maximum
speed. The high speed jet affects the chain saw’s power.
For optimum setting of the carburetor, contact a
qualified servicing dealer who has a rpm counter at
his disposal.
CAUTION! Setting the high speed jet too lean reduces the
engine’s power and causes overheating. This results in
engine damage.
Correctly adjusted carburetor
When the carburetor is correctly adjusted the machine
accelerates without hesitation and the machine 4-cycles
a little at maximum speed. It is also important that the
chain does not rotate at idle. If the L-jet is set too lean it
may cause starting difficulties and poor acceleration. If
the H-jet is set too lean the machine will have less power,
poor acceleration and could suffer damage to the engine.
If the L and H-jets are set too rich it will lead to
acceleration problems or too low a working speed.
Checking, maintaining and
servicing chain saw safety
equipment
Chain brake and front hand guard
Checking brake band wear
Brush off any wood dust, resin and dirt from the chain
brake and clutch drum. Dirt and wear can impair
operation of the brake.
Regularly check that the brake band is at least 0.024 inch
(0.6 mm) thick at its thinnest point.
Checking the front hand guard
Make sure the front hand guard is not damaged and that
there are no visible defects such as cracks.
Move the front hand guard forwards and back to make
sure it moves freely and that it is securely anchored to the
clutch cover.
Checking the inertia brake release
With the engine turned off, hold the chain saw over a
stump or other firm object. Let go of the front handle so
that the bar drops towards the stump as the chain saw
rotates around the rear handle.
When the bar hits the stump the brake should be
applied.
Note! All servicing and repair work on the machine
requires special training. This is especially true of the
machine
′s safety equipment. If your machine fails any of
the checks described below we recommend you to
contact our servicing dealer.