Checking Oil Supply
•
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)
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
The carburettor on your unit has been factory adjusted, but may require fine tuning due to change in
operating conditions. Before adjusting the carburettor, make sure that provided are clean air/fuel filters
and fresh, properly mixed fuel. When adjusting, take the following steps:
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 them. Then set them
back the initial number of turns as shown below.
H needle: 13/8 | L needle: 11/4
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 best cutting power, not for
maximum speed.
(1) L needle
(2) H needle
(3) Idle adjusting screw
Carburettor Anti-Freeze Mechanism
Operating the chain saw in temperatures of 0-50°C at times of high humidity may result in ice forming
within the carburettor, and this in turn may cause the output power of the engine to be reduced or for the
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.
Under normal circumstances the product should be used in normal operating mode, i.e. in the mode 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.
Switching between operating modes
1.
Flip the engine switch to turn off the engine.
2.
Remove the' air cleaner cover from the cylinder cover
3.
Loosen a screw and remove the screen on the back of the air cleaner cover.
4.
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
7
Summary of Contents for CTCHNSAW52A
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