dartyppyt
Husqvarna
Pro Class
Well I think I got it! My poor 08 WR250 has less than 20hrs on it and has been accumulating dust. I jumped on the 125/144 band wagon, so it is time that I get it done the way it want it. One of my biggest gripes is the hard clutch pull and not starting in gear. I went with the thickest base gasket to drop the compression, in turn, I knew I would loose some performance and spent about 8hrs in the cylinder and powervalve block grinding away and polishing. I also matched the exhaust port with the pipe and installed a carb divider in the front of the TMX carb.
Now comes the clutch. I cut the clutch arm down by the case and added a 1/4 inch. Pull was great and seemed comparable with the pull on my 125. I also went in and under the clutch spring bolts and washers, then installed thin 6mm washers to relieve pressure on the discs. I'm thinking that this will make it start in gear? The other night I decided to see if I could get the clutch to pull easier yet?
I went back to the drawing board. Using my air grinder, I took the arm off the shaft. I re installed the shaft and measured to see what the longest arm, I could make without the cable hitting the oil vent plug. I made a new lever and welded it on the shaft. It just barely clears the oil vent plug. Now my clutch pulls easier than my 125'r.
Tonight I took the bike out for the first run. Gees does this thing rip! As PV Duke would say: Mrrrrrrrreeeeeeep! Ok, so what about the clutch? Well, guess what? It starts in gear! I even came back and took the shim washers out and it still starts in gear. I also moved the kick starter back a tooth and definately helps.
Let me spend some more time on it this weekend and I will post the pics of the arm and get you some measurements from center of shaft to center of cable holder rivet. I also had to get a new clutch cable because I found out that the old arm made it rub on the bottom of the reed intake casting. I noticed a wear spot in the cable and not taking chances on it breaking. With the new arm it looks like the cable is at a better angle and definately clears the casting.
Now comes the clutch. I cut the clutch arm down by the case and added a 1/4 inch. Pull was great and seemed comparable with the pull on my 125. I also went in and under the clutch spring bolts and washers, then installed thin 6mm washers to relieve pressure on the discs. I'm thinking that this will make it start in gear? The other night I decided to see if I could get the clutch to pull easier yet?
I went back to the drawing board. Using my air grinder, I took the arm off the shaft. I re installed the shaft and measured to see what the longest arm, I could make without the cable hitting the oil vent plug. I made a new lever and welded it on the shaft. It just barely clears the oil vent plug. Now my clutch pulls easier than my 125'r.
Tonight I took the bike out for the first run. Gees does this thing rip! As PV Duke would say: Mrrrrrrrreeeeeeep! Ok, so what about the clutch? Well, guess what? It starts in gear! I even came back and took the shim washers out and it still starts in gear. I also moved the kick starter back a tooth and definately helps.
Let me spend some more time on it this weekend and I will post the pics of the arm and get you some measurements from center of shaft to center of cable holder rivet. I also had to get a new clutch cable because I found out that the old arm made it rub on the bottom of the reed intake casting. I noticed a wear spot in the cable and not taking chances on it breaking. With the new arm it looks like the cable is at a better angle and definately clears the casting.