I HAVE A "94" WR AND WHEN I WAS WARMING IT UP, I RODE IT ABOUT 100 YARDS, THEN IT LOST SOME POWER LIKE IT WAS KINDA RUNING OUT OF GAS OR SOMETHING, SO I PARKED IT, A COUPLE OF DAYS LATER, I TRIED TO START IT AND IT WONT KICK OVER AT ALL, I THINK ITS FROZE UP OR SIEZED, HOW CAN I DETERMINE EXACTLY WHATS THE PROBLEM, IF ITS THE RINGS OR IF IS THE LOWER END? THANKS...JOHN D.
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WR stands for wide range if I remember in 1989 there was the YZ250 and the WR250 both two strokes.
The WR was the enduro model with a wide range gear box. low first gear and overdrive in top
The WR four strokes started around 1998, but Im not sure if the gearbox are much different to the YZF.
In australia there is a compliance plate on the headstem with model ID.
lots of problems can cause this check rings are not gone by getting a compression tester and putting it in the spark plug hole and turn the engine over if pressure goes over 100 psi 7 bar then the rings are ok if below im afraid rings have had it also check to make sure the head gaskets is not blown by lose of coolant or oil coming out of head good luck
You are prbably going to have to pull the engine and split the cases just to get to the guts of the kick starter, but the good news is sounds like a broken spring. I only recommend spliting the cases if you are very experienced.