Yamaha F115 AETL [244/709] Cylinder head assembly

Yamaha FL115A [244/709] Cylinder head assembly
5-25
POWR
E
CHECKING THE THERMOSTAT 5
1. Check:
Thermostat
Damage/valve does not open
Replace.
2. Measure:
Valve operating temperature
Valve lift a
Out of specification Replace the
thermostat.
Measuring steps
(1) Suspend the thermostat in a container
filled with water.
(2) Slowly heat the water.
(3) Place a thermometer in the water.
(4) While stirring the water, observe the
thermometer’s indicated temperature.
Water temperature Valve lift
Below
50˚C (122˚F)
0 mm (0 in)
Above
60˚C (140˚F)
Min. 4.3 mm
(0.17 in)
a
5280
CYLINDER HEAD ASSEMBLY

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