MAINTENANCE
High speed jet HChecking the front hand guard
At the factory the engine is adjusted at sea level. When
working at a high altitude or in different weather
conditions, temperatures and atmospheric humidity, it
may be necessary to make minor adjustments to the high Make sure the front hand guard is not damaged and that there
speed jet.are no visible defects such as cracks.
CAUTION! If the high speed jet is screwed in too far, it
may damage the piston/cylinder.
When test run at the factory, the high speed jet is set so that
the engine satisŢes the applicable legal requirements at the
same time as achieving maximum performance. The
carburettorOs high speed jet is then locked using a limiter cap
in the fully screwed out position. The limiter cap limits the Move the front hand guard forwards and back to make sure it
potential to adjust the high speed jet to at most half a turn.moves freely and that it is securely anchored to the clutch
cover.
Correctly adjusted carburettor
When the carburettor is correctly adjusted the machine
accelerates without hesitation and 4-cycles a little at full
throttle. It is also important that the chain does not rotate at
idle. If the L-jet is set too lean it may cause starting difŢculties
and poor acceleration. If the H-jet is set too lean the machine
will have less power, poor acceleration and could suffer Checking the brake trigger
damage to the engine.
Place the chain saw on Ţrm ground and start it. Make sure the
chain does not touch the ground or any other object. See the
Checking, maintaining and servicing instructions under the heading Start and stop.
chain saw safety equipment
Note! All service and repair work on the machine demands
special training. This is especially true of the machineOs
safety equipment. If your machine fails any of the checks
described below we recommend that you take it to your
service workshop.
Chain brake and front hand guard
Checking brake band wearGrasp the chain saw Ţrmly, wrapping your Ţngers and thumbs
around the handles.
Brush off any wood dust, resin and dirt from the chain brake
and clutch drum. Dirt and wear can impair operation of the
brake.
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.
Regularly check that the brake band is at least 0.6 mm thick
at its thinnest point.
28 � English |
ACEC
HUSQVARNA
