tyrer3 Posted November 30, 2009 Report Share Posted November 30, 2009 Hi Being a beginner I have purchased a second hand 250TXT 2000 MODEL. I have a bit of a problem and was wondering whether anyone could assist with some info. When the engine is running it is virtually impossible to change gear whilst the bike is stationary. Once on the move the gear change is ok, the clutch action seems a bit heavy, any suggestions as to what might be wrong. cheers in advance Quote Link to comment Share on other sites More sharing options...
chewy Posted November 30, 2009 Report Share Posted November 30, 2009 Nobody else currently riding gassers seems to be available so;.. First thing is to check out the hydraulics ..from memory I think the O ring on the top hat (slave cylinder if you like was always a bit dodgy on the early gassers) if you take it apart remember to "prime " it with fliud as you put it back together and back bleed with a syringe ; i.e push fluid up from slave cylinder nipple to the master cylinder. If you have it apart that far, it's worth having all the plates out and cleaning em up.. reshuffle em on reasembly. Finally make sure you have good oil. All the above is from my failing memory I'm sure you will find loads of stuff in the forum specific to Gas Gas which will be far more informative. hope this gives you some ideas. Quote Link to comment Share on other sites More sharing options...
lowbrow Posted November 30, 2009 Report Share Posted November 30, 2009 I've been trying to remember what the pre-Pro clutches were like, but there's no 'top hat', that came in with the Pro motor in 02. Provided the lever is adjusted properly as Chewy says clutch drag is usually associated with the hydraulics. Is there enough fluid in the master cylinder? If yes is there evidence of the seals leaking where the lever acts on the master cylinder plunger? Does the clutch drag get worse the longer you hold the lever in? If yes, I'd change the master cylinder seals first, but check the slave for leaking too. Don't worry too much about air in the system as it tends to self bleed, even if you change the master cylinder seals. Good luck, Dave Quote Link to comment Share on other sites More sharing options...
baldilocks Posted November 30, 2009 Report Share Posted November 30, 2009 Sounds as though the metal rod that goes through the motor could be worn. If you adjust the lever at the handlebar end does it go solid at the end of the travel ? if so remove slave cylinder but leave hose attached, pull the metal rod out and weld a small amount onto the end. you only need to increase the length by a couple of mm. change the oil before you do anything else though, may just be the wrong oil or its old. use atf dexron 3, not sure of quantity Quote Link to comment Share on other sites More sharing options...
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