Checking The Timing Belt; Checking The Spark Plug - Yamaha F30A Service Manual

Recommended engine oil:
4-stroke motor oil
API: SE, SF, SG, SH, SJ, or SL
SAE: 5W-30, 10W-30, or 10W-40
Engine oil quantity:
With oil filter replacement:
2.2 L (2.33 US qt, 1.94 Imp qt)
6. Install the oil filler cap and oil dipstick,
and then start the engine and warm it up.
7. Turn the engine off, and then check the
oil level and that there is no oil leakage. If
the oil level is low, add engine oil to the
correct level.

Checking the timing belt

CAUTION:
Do not turn the flywheel magnet counter-
clockwise, otherwise the water pump
impeller may be damaged.
1. Remove the manual starter and driven
sprocket cover. (M and W model)
Remove the flywheel magnet cover. (E
model)
2. While turning the flywheel magnet clock-
wise, check the interior a and the exte-
rior b of the timing belt. Replace the
timing belt if cracked, damaged, or worn.
a
NOTE:
To replace the timing belt, see "Replacing the
timing belt" (5-3).
67C3K11
b
S67C3012

Checking the spark plug

1. Disconnect the spark plug caps and
remove the spark plugs.
2. Clean the electrodes 1 with a spark plug
cleaner or wire brush.
3. Check the spark plug. Replace if the
electrodes are eroded, there is excessive
carbon or other deposits, or the gasket is
damaged.
4. Check the spark plug gap a. Adjust the
spark plug gap if out of specification.
NOTE:
Perform steps 2–4 for each spark plug.
Specified spark plug:
DPR6EA-9 (NGK)
Spark plug gap a:
0.8–0.9 mm (0.031–0.035 in)
5. Install the spark plugs, tighten them tem-
porarily, and then tighten them to the
specified torque using a spark plug
wrench.
Spark plug:
17 N·m (1.7 kgf·m, 12.5 ft·lb)
Power unit
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3-6