Needle Bearing Lubrication; Adjustment Of The Oil Pump; Cooling System - Husqvarna 3120XP Operator's Manual

Needle bearing lubrication

The clutch drum is fitted with one of the following drive
sprockets:
• A Spur sprocket (the chain sprocket is welded on the
drum)
• B Rim sprocket (replaceable)
• Both versions have a needle bearing on the drive
shaft, which has to be greased regularly (once a
week).
NOTE! Use only high quality bearing grease or engine oil.

Adjustment of the oil pump

The oil pump is adjustable. Adjustments are made by
turning the screw using a screwdriver or combination
spanner. The machine is supplied from the factory set to
1 turn open. Turning the screw clockwise will reduce the
oil flow and turning the screw anti-clockwise will increase
the oil flow.
WARNING! The engine must not be
!
running when making adjustments.
36 – English
MAINTENANCE
Recommended settings:
Bar 24"-28":
Bar 28"-34":
Bar 34"-42":
Bar 42" and longer: 1 3/4 turns from the closed position.
These recommendations apply to Husqvarna's chain oil,
for other chain oils increase the oil flow by one step.

Cooling system

To keep the working temperature as low as possible the
machine is equipped with a cooling system.
The cooling system consists of:
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 cold air over the cylinder).
Clean the cooling system with a brush once a week, more
often in demanding conditions. A dirty or blocked cooling
system results in the machine overheating which causes
damage to the piston and cylinder.
0 turns from the closed position.
3/4 turns from the closed position.
1 1/2 turns from the closed position.