1997 Johnson Evinrude "EU" 90, 105RW, 115, 150, 150W, 175 60 LV Service Manual, P/N 507268, Page 147Get this manual

1997 Johnson Evinrude "EU" 90, 105RW, 115, 150, 150W, 175 60 LV Service Manual, P/N 507268, Page 147

Thermomelt Stik Procedure

Twist and remove spark plug leads before changing propellers to avoid accidental starting of engine
1Install correct test propeller and place engine in test tank

2Start engine and run at 3000 RPM for at least five minutes3Reduce engine speed and run engine at 900 RPM for five minutesMark both cylinder heads with 1250 (52 C) and 1630 (730 C) Thermomelt Stik
4At 900 RPM, the 1250 (52 C) marks should be liquid and glossyThe 1630 (730 C) marks should remain dull and chalky If the 1250 (52 C) marks are not liquid and glossy, troubleshoot the cooling system for causes of over cooling If the 1630 (730 C) marks become liquid and glossy, troubleshoot the cooling system for causes of overheating

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