McCulloch CS 340 Manual De Instrucciones página 23

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MAINTENANCE
General
The user must only carry out the maintenance
and
service work described
in this manual. More extensive
work must be carried out by an authorized service
workshop.
Carburetor
adjustment
Your McCulloch
product has been designed and
manufactured
to specifications
that reduce harmful
emissions.
Function
The carburetor
governs the engine's speed via the
throttle control. Air and fuel are mixed in the
carburetor. 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 carburetor
settings are adjusted during testing
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 idling speed T
Adjust the idle speed with the T-screw. If it is necessary
to
re-adjust, turn the T-screw clockwise while the engine is
running,
until the chain starts to rotate.Then
turn counter-
clockwise
until the chain stops. A correctly adjusted
idle
speed setting occurs when the engine runs smoothly
in
every position. It should also be good margin to the rpm
when the chain starts to rotate.
cty0u
rse
icing
peed setting
cannot b e
| _
adjusted
so that the chain stops at idle.
|
Do not use the chain saw until it ha s
been properly adjusted
or repaired.
Checking,
maintaining
and
servicing
chain saw safety
equipment
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. Any maintenance
other
than that described
in this manual must be carried out
by your servicing dealer (retailer).
Switch off the engine and take off the ignition cable
before repairs or maintenance
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. (34)
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. (35)
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
activated.
(37)
Checking
the brake trigger
Place the chain saw on firm ground and start it. Make sure
the chain does not touch the ground or any other object.
See the instructions
under the heading Start and stop.
Grasp the chain saw 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 lockout
Make sure the throttle control is locked at the idle
setting when the throttle lockout is released.
Press the throttle lockout and make sure it returns to
its original position when you release it.
Check that the throttle trigger and throttle lockout
move freely and that the return springs work properly.
1154657-49
Rev.1 2012-03-15
English - 23

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