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  1. There are many similarities between the 2003 and 2004 Pro. I think, I may not be 100% accurate, that the 2004 has the same 38mm GasGas produced forks. the 2004 user manual states 310cc each leg. The Hell Team have a nice resource here: https://www.thehellteam.com/technical-support/gas-gas-parts-and-service-manuals.html
  2. Agree, I tried an old Tubeless tire on the rear of my TY175, wouldn't sit on the bead correctly. Mounted an IRC tube type rear tire. No problems with bead seating or tube creep. Only problem I have is the sidewall is a bit softer than I would like and have to run 5-6psi in it instead of 4psi
  3. I had some slop in the rear of my GasGas at the swingarm pivot. ended up the swing arm axle was badly worn. You may also need a new swing arm axle.
  4. Tap harder. May need to use a metal headed hammer to provide a decent shock to dislodge the crankshaft. not a HARD hit, but a good tap.
  5. Personal preference is to cover the clutch always 100% I cover the front brake almost always, similar to Faussy if I am hitting a larger obstacle or hill that requires a bit more throttle and GO!!!! I will take my finger off the front brake. As fprintf states, eventually the movements to get fingers back on front brake get to be almost automatic.
  6. zippy


    Check out the Hell Team website. Choose parts books or user manuals, and then choose the year of your bike. https://www.thehellteam.com/technical-support/gas-gas-parts-and-service-manuals.html
  7. I was unaware of the sale. but to be fair there is much I am unaware of in life.
  8. Been here for a few years myself. On Advrider I also advertise my bike of choice.
  9. Check your transmission fluid level, if you have a leaking clutch side crankshaft seal it will suck in trans fluid and burn it causing excess smoke. Not sure on fuel consumption, I never measured, just rode it and filled up when necessary.
  10. Clean the bike???? oh no no no. every time I clean the bike something is broken. No clean the bike = nothing broken. I transport my bike(s) either in the bed of a pickup or on a trailer. So I never really thought about a need to clean the bike before transport, but I can see in certain cases where it would be a concern. Have you considered a hitch mounted carrier? (assuming your vehicle will accept one)
  11. I believe it is a designed "weep hole" to indicate failing water pump seal(s) as stated by b40rt and tshock250 If I remember correctly that is a 2 seal design, a seal for the coolant side and a seal for the oil side with a gap between. The weep hole is situated in the gap between the seals. Benefit is you can tell which seal is bad by what is leaking out of the weep hole. but I would suggest changing both seals, because they have both been in there the same length of time with same use etc..
  12. this video shows the new style crank bearing (w/ seals) and how to retro fit to older Pro engines. more videos; https://www.youtube.com/c/TRIALSPARTSUSA/videos there used to be a good video by Jim of tearing down a GasGas pro engine, I am unable to locate at this time good resource for parts diagragms https://www.thehellteam.com/technical-support/gas-gas-parts-and-service-manuals.html click parts books and find your year.
  13. You should be able to purchase a matched cylinder / piston set. with a return of your cylinder for a "core". easier than finding a place to replate etc. I recommend new crank bearings and seals if you feel vertical play. (you are halfway torn down anyway) Pro crank bearings are lubricated with transmission oil, so be sure the hole in the races match the hole in the case. My 0.02
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