Checking The Thermostats - Yamaha Z200N Service Manual

POWR
CYLINDER HEAD COVERS
5260

CHECKING THE THERMOSTATS

1. Check:
• Thermostat
Damage/valve does not open →
Replace.
2. Measure:
• Thermostat opening temperature
• Valve lift a
Out of specification → Replace.
Water temperature
Below 48 - 52 ˚C
(118 - 126 ˚F)
Above 60 ˚C
Measuring steps
(1) Suspend the thermostat in a container
filled with water.
(2) Place a thermometer in the water.
(3) Slowly heat the water.
(4) While stirring the water, check that the
thermostat opens at the specified tem-
perature.
5-40
Valve lift
Min. 3 mm
(140 ˚F) (0.12 in)
E
5
0 mm
(0 in)