Yamaha F100A Service Manual

3-10
INSP
ADJ
E
POWER UNIT
Valve clearance adjustment
NOTE:
Valve clearance adjustment should be made
on a cold engine, at room temperature.
1. Remove:
● Flywheel magneto cover
● Spark plug cap cover 1
2. Disconnect:
● Spark plug leads 2
● Fuel hoses 3
3. Loosen:
● Timing belt tensioner
4. Remove:
● Timing belt
● Driven sprockets
● Cylinder head cover
● Spark plugs
5. Install:
● Driven sprockets
● Timing belt
6. Tighten:
● Timing belt tensioner
1
2
3
7. Measure:
● Intake valve clearance a
● Exhaust valve clearance b
NOTE:
If any valve clearance is out of specification,
record its measurement.
Valve clearance:
Intake: 0.20 ± 0.03 mm
(0.008 ± 0.001 in)
Exhaust: 0.34 ± 0.03 mm
(0.013 ± 0.001 in)
b
a

Yamaha F100A Specifications

General

Brand	Yamaha
Model	F100A
Category	Outboard Motor
Language	English