Checking The Timing Belt And Sprockets; Installing The Timing Belt And Sprockets - Yamaha F15B Service Manual

POWR
Checking the timing belt and
sprockets
1. Check the interior and exterior of the tim-
ing belt for cracks, damage, or wear.
Replace if necessary.
2. Check the drive sprocket 1 and driven
sprocket 2 for cracks, damage, or wear.
Replace if necessary.
2
1
Installing the timing belt and
sprockets
1. Install the washer, Woodruff key and
check that the "1" mark a on the driven
sprocket 1 is aligned with the "M" mark
b on the cylinder head, and then tempo-
rary tighten the bolt 2.
1
cC
Do not turn the drive sprocket or the dri-
ven sprocket when the timing belt is not
installed. Otherwise the piston and valves
will interfere with each other and be dam-
aged.
5-19
Power unit
6D450400
b
a
2
6D430410
2. Install the Woodruff key 3, drive sprock-
et 4.
4
NOTE:
Align the key groove of the crankshaft and
the mark on the cylinder block.
3. Check that the cut-out c on the drive
sprocket is aligned with the "M" mark d
on the cylinder block.
4. Install the new timing belt 5 from the
drive sprocket side first with its part num-
ber in the upright position.
66M
NOTE:
Alternately push down on the drive and then
driven sprocket until timing belt is properly
seated.
3
6D450420
d
c
6D450430
5
6D450440
6D45F11