Checking The Timing Belt; Replacing The Timing Belt - Yamaha F50F Service Manual

5. Pour the specified amount of the recom-
mended engine oil into the oil filler hole.
Recommended engine oil:
4-stroke motor oil
API: SE, SF, SG, SH, or SJ
SAE: 10W-30 or 10W-40
Engine oil quantity:
With oil filter replacement:
2.7 L (2.85 US qt, 2.38 Imp qt)
6. Install the oil filler cap and oil dipstick,
and then start the engine and warm it up
for 5 minutes.
7. Turn the engine off, and then check the
oil level and correct it if necessary.

Checking the timing belt

CAUTION:
Do not turn the flywheel magnet counter-
clockwise, otherwise the valve system
may be damaged.
1. Remove the flywheel magnet cover.
2. Remove the solenoid valve.
3. While turning the flywheel magnet clock-
wise, check the interior and the exterior
of the timing belt for cracks, damage, or
wear. Replace if necessary.
4. Turn the flywheel magnet clockwise to
transfer the slack of the timing belt from
port to starboard, and then lightly hold
the flywheel magnet in place.
5. Slightly push the timing belt with your fin-
ger between the drive gear and driven
gear, and then measure the belt slack.
Replace the timing belt if above specifi-
cation.
6C13G11
Timing belt slack a:
Within 14 mm (0.55 in)

Replacing the timing belt

CAUTION:
Do not turn the flywheel magnet counter-
clockwise, otherwise the valve system
may be damaged.
1. Remove the flywheel magnet cover.
2. Turn the flywheel magnet clockwise and
align the " 1" mark a on the driven
sprocket with the " " mark b on the cyl-
inder head.
Power unit
a
S6C13090
a
b
S6C15850
3-6
1
2
3
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