Checking The Thermostat - Yamaha F80BETL Service Manual

CHK
ADJ
5. Check the spark plug gap a. Adjust if out
of specification.
Specified spark plug:
LFR5A-11 (NGK)
Spark plug gap a:
1.0–1.1 mm (0.039–0.043 in)
6. Install the spark plugs, tighten them fin-
ger tight, then to the specified torque
using a spark plug wrench.
Spark plug:
25 N·m (2.5 kgf·m, 18.4 ft·lb)
7. Install the spark plug wire cover.
Spark plug wire cover screw:
4 N·m (0.4 kgf·m, 3.0 ft·lb)

Checking the thermostat

1. Remove the flywheel magnet cover.
2. Disconnect the cooling water hose 1,
and then remove the thermostat cover 2
and thermostat 3.
3-7
Periodic checks and adjustments
2
3. Suspend the thermostat in a container of
water.
4. Place a thermometer in the water and
slowly heat the water.
5. Check the thermostat valve opening at
the specified
Replace if out of specification.
1
3
S6D83080
S69J5E40
water temperatures.
6D93G11