1999 "EE" Evinrude 200, 225 V6 FFI Outboards Service Repair Manual, P/N 787025, Page 155Get this manual
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Thermomelt Stik Procedure &
5 When the engine speed is increased to 5000 RPM, both 1250 (73 C) marks should remain dull and chalky If the marks become liquid and glossy, troubleshoot the cooling