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Correctly adjusted carburettor
When the carburettor is correctly adjusted the chainsaw
accelerates without hesitation and the chainsaw 4-cycles a
little at max. 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 chainsaw will have less power, poor acceleration
and could suffer damage to the engine.
Checking, maintaining and servicing
chainsaw 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 0.6mm (0.024
inches) 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 chainsaw over a stump
or other firm object. Let go of the front handle so that the
bar drops towards the stump as the chainsaw rotates around
the rear handle.
When the bar hits the stump the brake should be applied.
Checking the brake trigger
Place the chainsaw on firm ground and start the engine.
Make sure the chain does not touch the ground or any other
object. See the instructions under Start and stop.
Grasp the chainsaw firmly, wrapping your fingers and
thumbs around the handles.
Apply full throttle and activate the chain brake by tilting
your left wrist forward onto the front hand guard. Do not let
go of the front handle. The chain should stop immediately.
Throttle lock
•
Make sure the throttle control is locked at the idle
setting when the throttle lock is released.
•
Press the throttle lock and make sure it returns to its
original position when you release it.
MAINTENANCE
NOTE: All servicing and repair work on the chainsaw
requires specialised training. This is especially true of
the chainsaw’s safety equipment. If your chainsaw fails
any of the checks described below, we recommend you
to contact our Customer Support Department.
BT-CS-40
