Nakayama PC4600 Mode D'emploi page 9

EN
Checking oil supply
Warning: Make sure to set up the bar and the chain when checking the oil supply. If not, the rotating parts may be exposed. It
is very dangerous.
After starting the engine, run the chain at medium speed and see if chain oil is scattered off as shown in the figure (F12).
(1) Chain oil
The chain oil flow can be changed by inserting a screwdriver in the hole on bottom of the clutch side . Adjust according to
your work conditions (F13).
(1) Adjuster
Note: The oil tank should become nearly empty by the time fuel is used up. Be sure to refill the oil tank every time when
refuelling the unit.
Adjusting the carburettor (F14)
The carburettor on your unit has been factory adjusted, but may require fine tuning due to the change in operating condi-
tions.
Before adjusting the carburettor ,make sure that provided are clean air/fuel filters and fresh, properly mixed fuel.
When adjusting, take the following steps :
Note: Be sure to adjust the carburettor with the bar chain attached.
1. Stop engine and screw in both H and L needles until they stop. Never force. Then set them back the initial number of turns
as shown below.
4500
H Needle 1 ± 3/8
L Needle 1 1/4 ± 1/4
2. Start engine and allow it to warm up at half-throttle.
3. Turn L needle slowly clockwise to find a position where idling speed is maximum, then set the needle back a quarter (1/4)
turn counter-clockwise.
4. Turn idle adjusting screw (T) counter-clockwise to that saw chain does not turn. If idling speed is too slow, turn the screw
clockwise.
5. Make a test cut and adjust the H needle for a best cutting power, not for maximum speed.
(1) L needle
(3) Idle adjusting screw
(2) H needle
Carburettor anti-freeze mechanism
Operating the chain saw in temperatures of 0-5 0C at time of high humidity may result in ice forming within the carburettor,
and this in turn may cause the output power of engine to fail to operate smoothly.
This product has accordingly been designed with a ventilation hatch the back of the air cleaner cover to allow warm air to be
supplied to the engine and to thereby prevent icing from occurring.
Under normal circumstances the product should be used in normal operating mode, i.e., in the model to which it is set at the
time of shipment. However when the possibility exists that icing may occur, the unit should be set to operate in anti-freeze
mode before use.
Warning: Continuing to use the product in the anti-freeze model even when temperatures have risen and returned to normal
may result in the engine failing to start properly or in the engine failing to operate at its normal speed, and for this reason you
should always be sure to return the unit to normal operating model if there is no danger of icing occurring.
How to switch between operating modes (F16)
1. Flip the engine switch to turn off the engine.
2. Remove the air cleaner cover and remove the screen on the back of the air cleaner cover.
3. Reattach the screen right side left so as to the anti-icing plate is on the right. Reinstall the cover.
(1) Air cleaner cover
(2) Anti-icing plate
(3) Screw
(4) Normal operating mode
(5) Anti-freeze mode
(6) Screen
9
5200
1 ± 3/8
1 1/2 ± 1/4
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