Checking The Thermostat - Yamaha E60HWD Service Manual

2. Clean the electrodes 1 with a spark plug
cleaner or wire brush. Replace the spark
plug if necessary.
3. Check the electrodes for erosion and
excessive carbon or other deposits, and
the gasket for damage. Replace the
spark plug if necessary.
4. Check the spark plug gap a. Adjust if out
of specification.
Specified spark plug:
B8HS-10, BR8HS-10 (NGK)
Spark plug gap a:
0.9—1.0 mm (0.035—0.040 in)
5. Install the spark plug temporary tight, and
then tighten it to the specified torque with
a spark plug wrench.
Spark plug:
25 N·m (2.5 kgf·m, 18 ft·lb)
69D5G11

Checking the thermostat

1. Remove the thermostat cover 1, gasket
1
6B430025
2. Suspend the thermostat in a container of
3. Place a thermometer in the water and
a
6B430030
4. Check the thermostat valve opening at
Top cowling/Fuel system/Power unit
2, and thermostat 3.
3
water.
slowly heat the water.
the specified water
Replace if out of specification.
Water
temperature
48–52°C
(118.4–125.6°F)
above
60°C (140°F)
1
2
1
2
69D30050
3
4
5
6B430060
6
temperatures.
7
8
6B430070
9
Valve lift a
0 mm (0 in)
(valve begins to tilt)
more than
3.0 mm (0.12 in)
3-4