Yamaha F100A Wartungshandbuch Seite 84

INSP
ADJ
IN
#1
#2
#3
#4
POWER UNIT
EX
Measurement steps:
Turn the flywheel magneto clockwise
until cylinder #1's piston is at TDC.
Measure the intake valve clearance for
cylinders #1and #2.
Measure the exhaust valve clearance
for cylinders #1 and #3.
Turn the flywheel magneto 360˚ clock-
wise.
Measure the intake valve clearance for
cylinders #3 and #4.
Measure the exhaust valve clearance
for cylinders #2 and #4.
8. Loosen:
Timing belt tensioner
9. Remove:
Timing belt
Driven sprockets
Camshaft caps
Camshafts
Refer to "POWER UNIT" in chapter 5.
10. Adjust:
Valve clearance
NOTE:
Do not mix the valve train parts (i.e., valve
pads, camshaft caps, camshafts). Keep
them organized in their proper groups
(e.g., cylinder #1 parts kept together).
Install the removed parts in their original
positions. If valve train parts are installed
in the wrong position, proper valve
adjustments are impossible.
3-11
E