FORUM RULES UPDATED - The forum rules have been updated to continue to provide a friendly and safe environment for our member community. Please take a moment to review the updated rules and our terms of use and privacy policy. Click here for Forum Rules which has links to the 'terms of use' and 'privacy policy'.
Re: 1972 40hp 402 merc. only half power at full throttle
Well thank you again max and you other guys your input will help BUT I just got a call back from mercury marine and my serial number shows it is a 1974 not 72 but i have attached some photos of the motor along with the serial number in...
Hi everyone I'm a newbie here so please be gentle lol I have a 2 part question #1 when i purchased my 40hp it ran superb but lately near the end of season in sept. i started having problems with half power at full throttle, sometimes it would work sometimes it wouldn't sometimes when only...
