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Clint Rogers

400 sportsman

#775955 - 04/16/09 11:35 AM

have two 400 sportsmans last fall just before storage one started losing power at about half throttle didn;t seem to backfire or miss just very boggy now both seem to be doing it any suggestion of what this could be

jmatura

Re: 400 sportsman

#775958 - 04/16/09 11:43 AM

I would start simple:

1) Check/clean air filter if necessary
2) New plugs
3) drain and fill with new gas

Other than that, probably need to a get a real mechanic...


Budaman

Re: 400 sportsman

#775961 - 04/16/09 11:50 AM

My Rincon did the same thing last spring. I thought it was bad gas from sitting over the winter. But when that didn't take care of it, I took it in to the shop. A simple carb adjustment took care of it....

Suzuki

Re: 400 sportsman

#775974 - 04/16/09 12:34 PM

My gut feeling was the driven clutch spring sacked. At least you have a few ideas to look at.

--------------------
Mike


Clint Rogers

Re: 400 sportsman

#775980 - 04/16/09 12:43 PM

thanks all this gives me a strat

big G

Re: 400 sportsman

#775983 - 04/16/09 12:46 PM

Does it feel like it is flooding ??? I would lean towards carb...

big G

--------------------
You can tell how big a person is, by what it takes to discourage them! "Hooks"




Don Miller

Re: 400 sportsman

#776080 - 04/16/09 04:39 PM

Is that the two stroke 400 engine? If so my brother-in-laws was prone to fouling plugs.

big G

Re: 400 sportsman

#776096 - 04/16/09 06:18 PM

Depending on year, the 400 Sportsman should be the 425, 4 stroke, with a Single Mikuni Carb.

big G

--------------------
You can tell how big a person is, by what it takes to discourage them! "Hooks"




cowboy

Re: 400 sportsman

#776143 - 04/16/09 09:34 PM

My 2005 400 had a recall on the cdi box becouse they overheated,also when I bought it new it had the wrong jets in the carb this also made it run poorly at mid range.

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