Hard starter

4 replies to this topic
  • wayne0

Posted February 21, 2012 - 11:15 PM


Just bought an 05 WR450 with electric start,
when turning engine over with startrer motor, it will not start and I get a pop through the exhaust every 2nd rotation (as if timing is out) If i stop and kick it over a couple of times, it will then turn over a bit and start (without any popping)
any ideas

cheers wayne

PS I was also concerned about how loud the clutch is but i have read here that they are all a bit rattely. is there anything that can be done to to quieten this down

  • Stealth13

Posted February 22, 2012 - 08:14 AM


Mine was doing that too and then eventually wouldn't start at all, needed the started jet and carb cleaned .

As for the clutch my 06 doesn't make any noise really

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  • woods-rider

Posted February 22, 2012 - 08:16 AM


Hard starting can also be a sign of valves out of spec. Give yours a quick check.

  • wayne0

Posted February 23, 2012 - 09:11 PM


Yeah check valves and are all good except cam can side exhaust is at little tight at .20mm (0.008'') and.178mm (0.007") was a snug fit.
Think the carb needs a strip and clean as it was dripping gas out the overflow pipe last night. put a new plug but no different.
Does anyone know were i can download a service manual.


  • still2smokin

Posted February 23, 2012 - 10:14 PM


http://www.yamahaown...om.au/index.php got this from the Pinned thread-- WR Performance Index

Very handy to have.


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