Checking The Timing Belt And Sprockets - Yamaha F50F Service Manual

NOTE:
• Use a deep socket 2 for this procedure.
• Make sure that the camshaft does not turn
when loosening the drive sprocket nut.
Crankshaft holder 18 3:
90890-06562
3. Remove the timing belt 4 from the
driven sprocket, then from the drive
sprocket.
CAUTION:
Do not turn the drive sprocket or the
driven sprocket when the timing belt is
not installed. Otherwise the piston and
valves will interfere with each other and
be damaged.
4. Loosen the driven sprocket bolt 5 and
remove the driven sprocket 6.
6C13G11
NOTE:
Make sure that the camshaft does not crank
when loosening the driven sprocket bolt.
Flywheel holder: 90890-06522
5. Remove the nut, retaining plate 7, drive
sprocket 8, and Woodruff key 9.
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 and driven
sprocket for cracks, damage, or wear.
Replace if necessary.
Power unit
1
2
3
4
5
6
7
8
9
5-16