darren250r
07-02-2007, 06:59 PM
As the title reads, my girlfriend's 86' 250R was running fine and parked. Several hours later she went to start it and it turned over about 1/2 a rotation and then locked.
When the bike is in gear you can push it and hear the piston moving in the cylinder. It will only roll about a foot and then you hear a clunk in the motor when it gets to the "locked" part and it won't budge any further. If you roll it backwards the motor turns about 1/2-3/4 of a rotation and then hits the "locked" spot again. Pulling in the clutch has no effect and there doesn't seem to be abnormal resistance when the motor is rotating between the two points where it "locks".
I'll start by letting you know that I have rebuilt the bottom end of my 250R several times, so I am very familiar with the components and configuration of the motors in these bikes.
I assumed it might be somthing to do with the kickstarter, clutch, or counter balancer but we pulled the clutch cover and everthing looks perfect. I pulled the couterbalancer and it looked good too. I didn't pull the clutch. Next we pulled the stator cover off and again, everything looked fine in there too.
My next step is to pull the motor and probably split the cases, but I thought I'd post here first to see if by a small chance this sounds like something someone else has gone through. I am hesitant to go through the trouble of splitting the cases since there was no obvious failure while it was running.
If anyone has any ideas or past experiences that apply, please post up. The thing that confuses me is the fact that it was running fine with no strange noises, no oil or coolant contamination and proper oil/fuel mix.
Thanks in Advance,
Darren
When the bike is in gear you can push it and hear the piston moving in the cylinder. It will only roll about a foot and then you hear a clunk in the motor when it gets to the "locked" part and it won't budge any further. If you roll it backwards the motor turns about 1/2-3/4 of a rotation and then hits the "locked" spot again. Pulling in the clutch has no effect and there doesn't seem to be abnormal resistance when the motor is rotating between the two points where it "locks".
I'll start by letting you know that I have rebuilt the bottom end of my 250R several times, so I am very familiar with the components and configuration of the motors in these bikes.
I assumed it might be somthing to do with the kickstarter, clutch, or counter balancer but we pulled the clutch cover and everthing looks perfect. I pulled the couterbalancer and it looked good too. I didn't pull the clutch. Next we pulled the stator cover off and again, everything looked fine in there too.
My next step is to pull the motor and probably split the cases, but I thought I'd post here first to see if by a small chance this sounds like something someone else has gone through. I am hesitant to go through the trouble of splitting the cases since there was no obvious failure while it was running.
If anyone has any ideas or past experiences that apply, please post up. The thing that confuses me is the fact that it was running fine with no strange noises, no oil or coolant contamination and proper oil/fuel mix.
Thanks in Advance,
Darren