1994 Johnson/Evinrude Outboards 40 thru 55 Service Manual, Page 148Get this manual

1994 Johnson/Evinrude Outboards 40 thru 55 Service Manual, Page 148

Markal Thermomelt Stik Procedure i rers; twist and remove all spark plug leads '" Avoid accidental starting of engine while
C) Thermomelt Stik4At 900 RPMthe 1250 (52 C) mark should appear liquid and glossyThe 1630 (73 C) mark should remain dull
and chalky If the 125 (52 C) mark does not appear liquid and glossy, troubleshoot the cooling system for causes of overcooling
If the 163 (730 C) mark becomes liquid and glossy, troubleshoot the cooling system for causes of overheatingf41 5When engine