My 1987 mariner 40 hp ob will not go above 2500 rpms at full throttle
by Thomas Hovermale
(Cross Junction, VA)
The compression is a good 140. The carburator was worked on in March of this year. Even had a mechanic try to adjust the carb on the water with no noticeable change. The boat starts ok & runs fine at the lower rpms. Any help would be greatly appreciated. Thanks, Tom H.