Software Method; Pyrometer Method; Idle Operating Temperature Troubleshooting (Below Range) - BRP Evinrude E-TEC G2 Service Manual

Software Method

Use the Monitor screen of Evinrude Diagnostics
software v 6.1 or higher, to read temperature dis-
plays.
Engine Monitor Screen
Typical temperature displays at IDLE speed
should be 140°F ± 10°F (60°C ± 6°C)
Typical temperature displays at WOT speed
should be 150°F ± 10°F (66°C ± 6°C)
Operating temperature must not exceed 203°F
(95°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
Typical pyrometer readings at IDLE speed should
be 140°F ± 10°F (60°C ± 6°C)
IMPORTANT:
009242
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 140°F ± 10°F (60°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 the sealing surface in the exhaust
adapter.
Plunger
Pressure Relief Valve
Cooling System
Engine Temperature Check
1
1
If you get low or inaccurate read-
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