Husqvarna WS 482 HF Workshop Manual page 6

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6
FUNCTION TEST
Max 1,5 mm
.06 in.
Wear control
Check the worm gear play using a dial gauge
arranged as shown in the figure. Control
measurement should be made level with the
centre of the blade flange hub.
If the play exceeds 1.5 mm (.06 in.) when the
arm is pushed with a light press, the worm
wheel needs replacing.
Also check to see if the worm wheel's
wedging has too much play by pushing the
arm with greater force. If a play of 4–6 mm
(.15–.25 in.) can be measured, the keyway in
the worm wheel is deformed and the worm
wheel may need replacing.
These plays do not significantly affect the
sawing process, but could lead to a total
failure if the wear continues which is why it
is prudent to address these issues at a
scheduled service.