Changing Camshaft Drive Belt - Husqvarna Viking Automatic 21 Service Manual

14
.
Changing camshaft drive belt
Take off the belt guard
on
the
end
of the machine
.
Take out the
re
-
duction
gear
,
raising it
enough to get it
free of the belt ( 3 Fig
.
12 )
.
Re
-
move
the
screw
in the centre
of the handwheel ( 1 Fig
.
12 )
,
which holds
it
to the camshaft
.
Draw out
the
handwheel
from the machine
,
sliding
the loose belt ( 3 Fig
.
12
under the
wheel
in towards the centre of the
machine
on
both sides
,
so
that the
handwheel and belt
can come
out
through hole ( 2 Fig
.
12 ) in
the
sew
-
ing
head
.
To
replace the
handwheel
and belt
,
proceed in the opposite
manner
.
Place the
new
belt
in
the belt
groove on
the handwheel
;
slide the
free end of the belt into place
,
holding the free section
of belt
on
the
underside of the
wheel
in to
-
wards the centre of the machine
.
8