Checking The Thermostat; Checking The Cooling Water Passage - Yamaha 200A Service Manual

CHK
ADJ
5. Install the spark plug, tighten it finger-tight
to the position B, then apply the specified
torque with a spark plug wrench to the po-
sition C.
Spark plug:
25 N • m (2.5 kgf • m, 18 ft • lb)
NOTE:
Clean the spark plug gasket and the seating
face before installing the spark plug.

Checking the thermostat

1. Remove the thermostat cover 1, and ther-
mostat 2.
2. Suspend the thermostat in the container
with water.
3. Slowly heat the water.
3-5
Periodic checks and adjustments
60H30070
60H30072
60H30075
4. Check the thermostat valve lift A at the
specified water temperature. Replace the
thermostat if the valve lift is out of specifi-
cation.
Water
temperature
50°C (122°F)
above
60°C (140°F)
5. Install the thermostat and 2 the cover 1,
and new gasket.
Thermostat cover bolts
1st : 4 N • m (0.4 kgf • m, 3 ft • lb)
2nd : 8 N • m (0.8 kgf • m, 6 ft • lb)

Checking the cooling water passage

1. Check the cooling water inlet cover 1, and
cooling water inlet for clogs. Clean if nec-
essary.
2. Place the lower unit in water, and then start
the engine.
60H30080
Valve lift A
0 mm (0 in) –
(When the valve
begins to open.)
more than
3.0 mm (0.12 in)
60H30090
60H5E11