"I have an ongoing problem wit
"I have an ongoing problem with my 1988 Mariner 60HP 3 cyl. The overtemp. alarm sounds frequently after 5-7 min. above 3000RPM. I have 5PSI water pressure from 1000-3000, and up to 8-9 PSI at WOT. Tattletail is strong and steady. If I back down the throttle when...