400ex PLEASE HELP!!!! Clutch problems.

[Blaster2001king]

I think my clutch is slipping, but idk.
When I ride my quad, the clutch slips badly. When I take off, I let out the clutch. If you give it gas slowly, it goes and doesn't slip. If you punch the throttle and give it a lot if gas and try to pull a wheelie or pull the front end up, it just slips, and just revs and doesn't have any power. Do you think I need a new clutch?

 

[Larry's Shee]

What kind of oil are you using in the engine/trans ?? Did you just recently change it? Is this a recent problem or has it been getting progressively worse ??

 

[Blaster2001king]

What kind of oil are you using in the engine/trans ?? Did you just recently change it? Is this a recent problem or has it been getting progressively worse ??

I bought the quad about 2 weeks ago. At first, it didn't slip. I could pull power wheelies in 2nd and 3rd, now I can barely get them up in first. I haven't changed the oil or done anything to it. I am kind of new to quads. Thanks for the help,
Matt