hey guys my brother has a 96 sportsman 500, Good shape and low miles, recently the bike has been having a big lack of power, when you hammer the gas some times it goes and some times it does not rev out, we inpected the clutch (primary) and took the carb apart, every thing seems ok any ideas? thanks

 

Check the air flow..........Is the filter clean???.................Caper.....

 

yes the filter is clean, the guy is a freak when it comes to looking after his toys. thanks

 

valves been adjusted, bad cam, worn out clutch parts. how many miles on it.

 

I think the bike has 2500 miles, The first thing i thought was the clutch, But it seems to be good,. thanks

 

Don't think I am being funny here but check the muffler and exhaust. If a rat or wasp nest is built up in it it can act like a clogged catalytic converter on a car. If that is not it and the intake ari flow is good and you have already checked the carb and clutch out make sure you don't have a vacuum leak in the fuel system or a clogged fuel filter.

 

The exhaust seems to be ok, lots of flow, we are going to look at the carb one more time, thanks