Assembly; Fitting The Bar And Chain - Husqvarna 439 Bedienungsanweisung

Fitting the bar and chain

WARNING! Always wear gloves, when
!
working with the chain.
• Check that the chain brake is in disengaged position
by moving the front hand guard towards the front
handle.
• Unscrew the bar nut and remove the clutch cover
(chain brake). Take off the transportation guard (A).
• Fit the bar over the bar bolt. Place the bar in its
rearmost position. Place the chain over the drive
sprocket and in the groove on the bar. Begin on the top
side of the bar.
• Make sure that the edges of the cutting links are facing
forward on the top edge of the bar.
• Fit the clutch cover (chain brake) and locate the chain
adjuster pin in the cut-out in the bar. Check that the
drive links of the chain fit correctly on the drive
sprocket and that the chain is in the groove on the bar.
Tighten the bar nut finger-tight.
16 – English

ASSEMBLY

A
• Tension the chain by turning the chain tensioning
screw clockwise using the combination spanner. The
chain should be tensioned until it does not sag from
the underside of the bar. See instructions under the
heading Tensioning the chain.
• The chain is correctly tensioned when there is no
slack on the underside of the bar, and it can still be
turned easily by hand. Tighten the bar nut with the
combination spanner while holding up the tip of the
bar.
• When fitting a new chain, the chain tension has to be
checked frequently until the chain is run-in. Check the
chain tension regularly. A correctly tensioned chain
ensures good cutting performance and long life.
Fitting a spike bumper
• To fit a spike bumper – contact your service agent.