Thermostat Inspection; Service Points - Yamaha F100A Service Manual

POWR
a
CYLINDER HEAD ASSY.

SERVICE POINTS

Thermostat inspection

1. Inspect:
Thermostat
Damage/valve does not open →
Replace.
2. Measure:
Valve operating temperature
Valve lift a
Out of specification → Replace the
thermostat.
Water temperature
60˚C (140˚F)
70˚C (158˚F)
Measuring steps:
Suspend the thermostat in a container
filled with water.
Slowly heat the water.
Place a thermometer in the water.
While stirring the water, observe the
thermometer's indicated temperature.
5-24
Valve lift
Below 0 mm
Above Min. 3 mm
(0.12 in)
E
(0 in)