Software Method; Pyrometer Method; Idle Operating Temperature Troubleshooting (Below Range) - Evinrude E-TEC 200 Service Manual

Software Method

Use Evinrude Diagnostics software to read tem-
perature displays.
Engine Monitor Screen
Typical temperature displays at IDLE speed
should be 160°F ± 10°F (71°C ± 6°C)
Typical temperature displays at WOT speed
should be 150°F ± 10°F (66°C ± 8°C)
Operating temperature must not exceed 194°F
(90°C).

Pyrometer Method

Use a Temperature Gun, P/N 772018, or a digital
pyrometer to measure the outboard's operating
temperatures.
Measure temperature at the top of cylinder block,
next to the thermostat housing and cylinder head.
Check temperature on both sides of powerhead.
1. Top of cylinder block (starboard side)
ENGINE TEMPERATURE CHECK
Typical pyrometer readings at IDLE speed should
be 143°F ± 15°F (62°C ± 8°C)
IMPORTANT:
ings with a digital pyrometer, coat the probe loca-
tion with Thermal Joint Compound, P/N 322170.
Idle Operating Temperature
Troubleshooting (Below Range)
If engine IDLE temperature is below operating
range 160°F ± 10°F (71°C ± 6°C), check thermo-
stat and pressure relief valve operation.
Pressure Relief Valve
The pressure relief valve should be closed at
IDLE speed. Water should not flow past the
plunger and seal.
008104
Pressure Relief Valve
Start the outboard and check IDLE operating tem-
perature.
1
004339
COOLING SYSTEM
If you get low or inaccurate read-
Plunger
Seal
DRC8113
9
189