1995 Johnson/Evinrude Outboards 25, 35 3-Cylinder Service Manual, Page 125Get this manual

1995 Johnson/Evinrude Outboards 25, 35 3-Cylinder Service Manual, Page 125

Engine Temperature Check The Markal Thermomelt Stik is heat-sensitive marker that melts on contact with surface of specific
temperature must be 70 10 (21 e)Pyrometer Procedure Twist and remove spark plug leads before changing propellers to avoid
accidental starting of engine1Install correct test propeller and place engine in test tank 2Start engine and run at 3000
RPM for at least five minutes 3Reduce engine speed and run engine at 900 RPM for five minutesAt 900 RPM digital pyrometer
should indicate 140 15 (60 e) when held on the cylinder head If engine temperature is not within this range, troubleshoot
cooling system to determine problem39169 4Increase engine speed to 5000 RPMAt 5000 RPM the digital pyrometer must not indicate
more than 160 (71 e) If engine temperature exceeds 160 (71 e), troubleshoot cooling system to determine problem INotellf