1995 Johnson/Evinrude Outboards 25, 35 3-Cylinder Service Manual, Page 126Get this manual
Retaining Ring Pliers
NOT E: USE UT ICA TOOL COINC
CATNo226 612 HCS
EDP No16226 11
Thermomelt Stik Procedure
Twist and remove spark plug leads before changing propellers to avoid accidental starting of engine1Install correct test propeller and place engine in test tank2Start engine and run at 3000 RPM for at least five minutes
OJ 3Reduce engine speed and run engine at 900 RPM for five
minutesMark the cylinder head with 1250 (52 C) and 1630 (73 C) Thermomelt StikThe 163 (73 C) mark should remain dull and chalky0 0
4At 900 RPM, the 125 (52 C) mark should be liquid and glossy If the 1250 (52 C) mark does not remain liquid and glossy, troubleshoot the cooling system for causes of over cooling If the 1630 (730 C) mark becomes liquid and glossy, troubleshoot the cooling system for causes of overheating