167
POWERHEAD
THERMOSTAT SERVICE
7
Inspection
If salt deposits, corrosion, wear, or other damage
are found, clean or replace.
Check thermostat opening temperature as fol-
lows:
• Insert a length of thread between thermostat
valve/body, and suspend thermostat in a con-
tainer of water.
• Place thermometer in container and heat water.
• Observe water temperature when thermostat
valve opens and releases thread.
Thermostat operating temperature:
• Standard: 136 to 144° F (58 to 62° C).
Installation
Install thermostat, thermostat cover, and oil gallery
plate. Tighten screws 88 in. lbs. (10 N·m).
Install the carburetor. Refer to CARBURETOR
SERVICE on p. 109.
Install the flywheel. Refer to COMPONENT SER-
VICING on p. 99.
1. Thermometer
2. Heater
004624
1. Thermostat cover
2. Oil gallery plate
005664
1
2
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