1995 Johnson/Evinrude Outboards 50 thru 70 3-cylinder Service Manual, Page 142Get this manual

1995 Johnson/Evinrude Outboards 50 thru 70 3-cylinder Service Manual, Page 142

Engine Temperature Check The Markal Thermomelt Stik is heat-sensitive marker that melts on contact with surface of specific
temperature must be 700 100 (21 30 e)Pyrometer Procedure 1Install correct test propeller and place engine in test tank i
lers to avoid accidental starting of engine "" Twist and remove spark plug leads before changing propel- 2Start engine and
run at 3000 RPM for at least five minutes[:;l3Reduce engine speed and run engine at 900 RPM for five minutesAt 900 RPM, digital
pyrometer should indicate 1400 150 (60 e) when held on the cylinder head If engine temperature is not within this range,
troubleshoot cooling system to determine problemf214Increase engine speed to 5000 RPMAt 5000 RPM the digital t=J pyrometer
must not indicate more the 1600 (71 e) If engine temperature exceeds 1600 (71 e), troubleshoot cooling system to determine