Operating instructions
ENGINE
ADJUSTMENTS
NOTE:
WESTERBEKE
recommends
that
the
following
engine
adjustments
be
peiformed by a competent
engine
mechanic.
The
information below is provided
to
assist
the
mechanic.
Tensioner
Spring/Timing
Tensioner
Installation
1. Install the tensioner spring
and
timing belt tensioner.
2.
Hook
the tensioner spring onto the bend
of
the timing belt
tensioner bracket and the stopper pin on the cylinder
block.
3.
Move
the timing belt tensioner as close as possible to the
water pump; temporarily tighten the tensioner nut.
TIMING
BELT
TENSIONER
Timing
Belt
Insiallation
1. Align the trlangular marking on
,the
camshaft sprocket
with a marking
on
the timing belt rear cover.
2. Align the notch in the crankshaft sprocket flange with
the marking
on
the front case.
3.
Align the triangular marking on the oil pump sprocket
with the marking
on
the front case, and then insert a 65
mm
(2.56 in.) or longer, 8
mm
(0.31 in.) diameter
round bar into the plug hole in the left side
of
the
cylinder block.
MARKING
ON
TIMING
BELT
REAR
COVER
TRIANGULAR'
MARKING
ON
CAMSHAFT
SPROCKET
TIMING
BELT
TENSIONER,
MARKING
ON
FRONT
At
this time, check that the moveable range
of
teeth on
the oil pump sprocket is according to specifications.
Standard
value:
4
to
5
teeth
in
forward
direction.
1
to
2
teeth
in
reverse
direction.
REVERSE
OIL
PUMP
SPROCKET
4.
If
the movable range
of
the oil pump sprocket exceeds
the specified range, correct as follows:
a. Pull out the round bar from the plug hole in the left
side
of
the cylinder block.
b. Turn the oil pump sprocket one turn at a time until
the round bar can again
be
inserted.
c. Check that the movable range
of
the oil pump
sprocket is in the specified value.
S. Set the timing belt over the crankshaft sprocket and
then over the oil pump sprocket and camshaft sprocket,
in that order.
NOTE:
Ensure
that
the
tension
side
of
the
timing
belt
is
not
slack.
Keep
the
round bar inserted
until
the
timing
belt
has
been
placed.
After this
step,
be
sure
to
remove
the
round
bar.
6. Apply counterclockwise force to the camshaft sprocket
to make the belt taut on the tension side, and make
sure that ail timing marks are lined up.
CAMSHAFT
SPROCKET
TENSION
SIDE
7. Loosen the temperorarily tightened tensioner nut on
the water pump side 1
or
2 turns, and tension the belt
making use
of
spring force.
NOTCH
IN
CRANKSHAFT
SPROCKET
flANGE
CASE
-~----'WESTERBEKE
Engines & Generators
24