Yamaha e60hwd, Service Manual

Page: 33 / 199

Checking the thermostat
1. Remove the thermostat cover
1
, gasket
2
, and thermostat
3
.
2. Suspend the thermostat in a container of
water.
3. Place a thermometer in the water and
slowly heat the water.
4. Check the thermostat valve opening at
the specified water temperatures.
Replace if out of specification.
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.
5. Install the spark plug temporary tight, and
then tighten it to the specified torque with
a spark plug wrench.
69D5G11 3-4
9
8
7
6
5
4
3
2
1
Top cowling/Fuel system/Power unit
6B430030
a
6B430025
1
Specified spark plug:
B8HS-10, BR8HS-10 (NGK)
Spark plug gap
a
:
0.9—1.0 mm (0.035—0.040 in)
Spark plug:
25 N·m (2.5 kgf·m, 18 ft·lb)
Water
Valve lift
a
temperature
48–52°C 0 mm (0 in)
(118.4–125.6°F) (valve begins to tilt)
above more than
60°C (140°F) 3.0 mm (0.12 in)
6B430060
69D30050
2
1
3
6B430070
69D5G11_03_1 06.10.16 13:36 Page 5