just got the yz400f back...

3 replies to this topic
  • answerace

Posted March 27, 2009 - 03:17 PM


So last winter i completely forgot to drain my gas after storing in garage. So I had the bike into the shop to have the carb cleaned, oil and filter changed, plug changed and figured i'd have the valves checked since i have no record of when it was last done. Ended up the valves needed adjusted so they did that and then started and test rode. I got there and picked it up and wanted to make sure it ran before I left. I attempted to use my normal starting drill that worked in 2-3 kicks every time and it didn't seem to work. Could the cleaned carb and reshimmed valves change my starting drill at all? Mid summer last year I added a White Bros R4 exhaust but I didn't really notice much of a difference in starting. Should I be rejetting the carb at all for the exhaust? Its just a slip-on pipe not a full exhaust. It also has Twin-Air filter.

Old Starting Drill:
2 twist of throttle (0-1 if started with in past few hours)
choke on
find tdc
1 soft kick
find tdc
1 hard kick

New Starting Drill:
no clue.....

  • 642MX

Posted March 27, 2009 - 03:21 PM


It should still start up like always. Are you still doing the drill and its not firing? Did the dealership guys get it to light?.... I don't think I would've picked it up without hearing it run.

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  • answerace

Posted March 27, 2009 - 05:25 PM


Yeah, they said they tested it and I also got it to fire in the parking lot but it was much harder then I remember. I guess I'll just have to do some trial and error like when i first got it. It def runs much smoother when running now with the new plug and valve adjustment.

  • ZéPovinho

Posted March 28, 2009 - 03:05 PM


dont twist the throtlle, and check the spark plugyou might have already flooden it

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