Mariner 40 stalls going into gear!!!!

Jamrude · #1 March 28th, 2006, 07:15 AM

Ello all, this is my first post, and a perplexing one at that.

I've got a Mariner 40hp 2 stroke, tiller steered, manual start. It runs really well out of the water on muffles, and in the water on tickover, but as soon as you try to go into gear either forward or reverse it stalls. Technician at boathard thinks the spline have sheared, but i cant see this causeing the stall. Just no power surely??? Also mentioned has been fuel line, but as it runs for hrs (literally) on idle i am some what confused.

Please help the newbie!!!

Cheers all

Jimmy C

WillyBWright · #2 March 28th, 2006, 01:44 PM

Welcome to iboats.

First thing that comes to mind is restricted main jets in the carbs. Gas turns to varnish with the least provocation these days. Or maybe you just need to fatten-up the idle mixture screws. 2-strokes need a rich idle mixture to be able to accelerate. Some people set them where they idle nice and smooth. But that's too lean for acceleration. About 1/4 turn out from smooth gets you in the ballpark.

Jamrude · #3 March 28th, 2006, 10:30 PM

Cheers for the advice, i'll get out the air compressor and strip out the carb this afternoon, in the mean time anything else to look out for whilst the carb etc is in bits?

Regards

Jimmy