Checking The Thermostat - SELVA MARINE Wahoo 15 Service Manual

Checking the thermostat

1. Remove the sprocket cover and manual
starter. (Manual starter model)
Remove the sprocket cover and flywheel
magnet cover. (Electric starter model)
2. Remove the thermoswitch and discon-
nect the cooling water hose.
NOTE:
To remove the manual starter or flywheel
magnet cover, see "Removing the timing belt
and sprocket" (5-30).
3. Remove the thermostat cover 1 and
thermostat 2.
CAUTION:
Do not reuse the gasket 3, always
replace it with a new one.
NOTE:
It is recommended to check the thermostat
cover anode before installing the thermostat
cover.
4. Suspend the thermostat in a container of
water.
5. Place a thermometer in the water and
slowly heat the water.
6AG3J11
3
1
2
3
S6AG3120
6. Measure the thermostat valve opening a
at the specified water temperatures.
Replace the thermostat if out of specifi-
cation.
Water
temperature
58–62 °C
(136–144 °F)
above
70 °C (158 °F)
7. Install the new gasket, thermostat, and
thermostat cover, and then tighten the
thermostat cover bolts to the specified
torque.
Thermostat cover bolt:
8 N·m (0.8 kgf·m, 5.9 ft·lb)
Power unit
S69J5E40
Valve opening a
0.05 mm
(0.0020 in)
(valve begins to
open)
more than
3.0 mm (0.12 in)
3-6
1
2
3
4
5
6
7
8
9