Mariner 150 Optimax Problem HELP!!
We have a Mariner 150 Optimax that's giving us a bit of grief.
We just cant seam to understand whats wrong with it. Put the computer on and no faults are registering.
The engine did have a overheating problem but after changing the thermostats and the impeller the cooling issue seams to have resolved itself.
Also we have put a new cranking battery on her as the old one was a leisure battery.
Symptoms now are when shes started everything is ok. Runs sweet as a nut. Had her running for about 45 mins and turned her off to do a spot of fishing. Started her up again went along nicely until revs dropped to 3000 rpm and wont go over.
can anyone help??