1999 "EE" Evinrude 5 thru 15 4-Stroke Service Manual, P/N 787022, Page 123Get this manual
Thermomelt Stik Procedure
1Reduce speed to 900 RPM and mark the cylinder head with 1250 (52 C) and 1630 (73 C) Thermomelt Stik
2At 900 RPMthe 1250 (52 C) mark should remain liquid and glossyThe 1630 (73 C) mark should remain dull and chalky If the 1250 (52 C) mark does not remain liquid and glossy, troubleshoot the cooling system for causes of overcooling If the 1630 (73 C) mark becomes liquid and glossy, troubleshoot cooling system for causes of overheating
3When the engine speed is increased to 5000 RPM, the 1630 (73 C) mark should remain dull and chalky If the mark becomes liquid and glossy, troubleshoot the cooling system for causes of overheati ng
Servicing Camshaft SealAll Models
The presence of oil under the cam pulley could indicate leaking camshaft sealThe seal can be replaced without disassembly of cylinder head Remove the belt, cam pulley, and key as described in this sectionUse OMC Seal Remover Kit, PI 391060, and OMC Pressing Screw, PI 342227, to remove the sealTo remove seal, install tip "A" on 9.915 (305cc) or tipD" on thru into removerinstaller bodyThread remover installer body with tip into seal to engage metal case screw While holding removerinstaller body, turn pressing and remove seal