Cooling System - Zenoah GZ4350 Manuel D'utilisation

2. Examine whether the groove in the bar has become
badly worn. Replace the bar if necessary.
3. Examine whether the tip of the bar is uneven or
badly worn. If a hollow forms on the underside of the
bar tip this is due to running with a slack chain.
4. Turn the bar daily to prolong the life of the bar.
To adjust the oil flow
The oil pump is adjustable. The product is supplied from
the factory with the screw set to middle position.
1. Turn the oil pump adjustment screw. Use a
screwdriver or combination spanner.
a) If you turn the oil pump adjustment screw
clockwise the oil flow will reduce.
b) If you turn the oil pump adjustment screw anti-
clockwise the oil flow will increase.
WARNING: The engine must not be running
when you make adjustments!
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Recommended settings:
• Bar 13"-15": Minimum flow
• Bar 15"-16": Medium flow
• Bar -18": Maximum flow

Cooling system

The product is equipped with a cooling system to keep
the working temperature as low as possible. The cooling
system consist of the following components:
1. Air intake on the starter.
2. Air guide plate.
3. Fins on the flywheel.
4. Cooling fins on the cylinder.
5. Cylinder cover (directs cool air over the cylinder).
Clean the cooling system with a brush once a week or
more often in demanding conditions. A dirty or blocked
cooling system causes the product to overheat which
results in damage to the piston and cylinder.
Centrifugal cleaning system
Centrifugal cleaning means that the air to the carburettor
passes through the starter. Dirt and dust is centrifuged
out by the cooling fan.
320 - 005 - 27.09.2017