Question about 2003 Gas Gas EC 400 FSE

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Slipping clutch My FSE400 clutch has started slipping under full acceleration. When ridden in sane person mode there is no problem. So I have a problem!! Do I need to replace clutch plates

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Clutch basketYou will need the fibre clutch plates and I would be replacing the clutch springs because the 400 had weeker springs than the 450 (04YM). Also check if the metal plates are blue this is a sign they are bernt and they may need replacing if it has been slipping for a period of time. Use 10w 40 oil. Motul or Motoex oil they are good and go genuine some non genuine plates can swell and cause drag. Sometimes the basket may have small wear marks on the fingers. If it has you can clean them up with a file but dont take to much off. The only other reason you would replace the basket is if the damper rubbers between the basket and big gear are worn.Try and move the gear and hold the basket, if the gear moves the dampers are worn and need replacing, I think you can get the dampers seperate. If you go to a good Gas Gas dealer you wont get riped off, I would take your plates in and ask for the mechanic for advice and not the parts person.,,,

Posted on Nov 10, 2008

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While pulling out from a stop, the engine seems to rev. It's like the bike is slipping out of gear or the clutch is slipping. The bike has 53,000 miles on it now.


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Clutch Slip


or at very low speed. The only way around it is to accelerate very slowly for a bit. After reading the forums I tried... -rolling the bike backward about 3' and examine the belt--the belt stays right at the top of the pulley. -examining the clutch--doesn't appear to be any rubber particles (shouldn't be as it was just replaced!) Also the drive belt is new. The only other thing to comment on is while I assumed I was buying a new clutch the red writing on the clutch indicates it is a rebuilt. That's all the info I have--any ideas?? Thanks! ,Slipping won't work for long. We have never seen slipping when all belt friction surfaces are clean. The belt should be totally dry and clean. The metal surfaces of both clutches can be cleaned with brake cleaner to remove any lubricants or oils that may be on them. Typically real slipping will destroy a belt almost instantly.,,,

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