Husqvarna 455 Manuel D’Utilisation

36 – 

English

The spark plug condition is influenced by:

•

Incorrect carburettor adjustment.

•

An incorrect fuel mixture (too much or incorrect type of 
oil).

•

A dirty air filter.

These factors cause deposits on the spark plug electrodes, 
which may result in operating problems and starting 
difficulties.

If the machine is low on power, difficult to start or runs poorly 
at idle speed: always check the spark plug first before taking 
any further action. If the spark plug is dirty, clean it and check 
that the electrode gap is 0.5 mm. The spark plug should be 
replaced after about a month in operation or earlier if 
necessary.

Note! Always use the recommended spark plug type! Use of 
the wrong spark plug can damage the piston/cylinder. Check 
that the spark plug is fitted with a suppressor.

Lubricate the bar tip sprocket each time you refuel. Use the 
special grease gun and a good quality bearing grease.

The clutch drum has a needle bearing on the output shaft. 
This needle bearing must be lubricated regularly (once a 
week).

When lubricating, remove the clutch cover by loosening the 
two bar nuts. Lay the saw on its side with the clutch drum 
upwards.

Lubrication involves engine oil dripping into the centre of the 
clutch drum as it rotates.

Adjustments are made by turning the screw using a 
screwdriver or combination spanner. The machine is supplied 
from the factory with the screw set to position 2. Turning the 
screw clockwise will reduce the oil flow and turning the screw 
anti-clockwise will increase the oil flow.

Recommended settings:

These recommendations apply to Husqvarna’s chain oil, for 
other chain oils increase the oil flow by one step.

Bar 13"-15": Position 1

Bar 15"-18": Position 2

Bar 18"-20": Position 3