Husqvarna Viking Automatic 21 - Changing camshaft drive belt

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