rusty bolts Posted January 27, 2021 Share Posted January 27, 2021 To wind it back, the rear timing sprocket sheared the key and timing slipped and bent both front and rear cylinder valves. Replaced the heads and tried to set the timing from the service manual. after 4 days of failure i sent to a mechanic to do. Well he returned the bike 2 days and $600 later and it stated right away with very strong sounding engine, i took it out several days later and it started first crack, put it in gear and took off strong but once i got up to 20 mph it was double beating and shaking and un ride-able. I opened her up and it seemed the front cylinder was timed perfect to the marks but the rear was off by a few links so i pulled it lined it up to the marks with great confidence i had done it all right and nothing, wont fire at all. Im ready to smash this bike out of frustration. Is the service manual wrong? what am i doing wrong? does anybody have any experience with this engine or a 250 which is identical Link to comment Share on other sites More sharing options...
blackhat250 Posted January 27, 2021 Share Posted January 27, 2021 Should HAVE TAKEN IT back to him,, 600 bucks ,.. now youve messed with it, he wont believe you, 1 Link to comment Share on other sites More sharing options...
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