04' WR450 Starter Issues


5 replies to this topic
  • SJMC_DON

Posted September 22, 2005 - 03:49 PM

#1

I have been dealing with this issue for quite a while now. It appears that my starter is turning too slow, with a fresh charge on the battery it will turn over but seems to run the battery dead after 4 or 5 5-10 second attempts. I have bought a new battery and the same issue exists. I kick the bike and it fires right up no problem, in fact I have basically resorted to just using the kick starter full time now. It appears to me that the starter is just overloading the battery, (I have not cleared a fuse yet). Is it possible that I have a bad bearing in the starter or perhaps the starter got some water or dirt in it at one time. Anyone else experienced the same thing?

Thanks!

  • ETP

Posted September 22, 2005 - 04:24 PM

#2

The electric start components seem to be sized to save wieght and work fine as long as all systems are working effeciently. Not alot of extra starting power like a car system. If you engine is ok, carb is jetted correctly, and the battery is fully charged, the bike will start right up. I've learned on my 03 that after a long sit in the garage, I have to turn on the gas, crank the throttle a couple of times and wait for a minute or two for the carb to prime. After that it usually starts right up.

  • Indy_WR450

Posted September 22, 2005 - 06:16 PM

#3

Jetting is critical to easy e-start starting down to 32 degrees.
Start with 72 starter jet and 48 pilot jet. I doubt your starter motor is worn out yet. :banghead:

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  • Blaster21996

Posted September 22, 2005 - 07:32 PM

#4

Jetting is critical to easy e-start starting down to 32 degrees.
Start with 72 starter jet and 48 pilot jet. I doubt your starter motor is worn out yet. :banghead:


I am willing to bet his jetting is off, and has since worn his starter out prematurely. My 05 received a new starter after 4 months of use .

  • SJMC_DON

Posted September 23, 2005 - 02:16 PM

#5

Thanks - This is not the first time I have heard jetting. I will give it a try!

72 Starter and 48 pilot, got it!

  • 450high

Posted September 24, 2005 - 11:56 PM

#6

My problem ended up beieg the brush end bearing ( bush ) in the starter motor.Yamaha don/t sell it as a part but if you unsolder the brushes then remove the bush by screwing a tap or bolt thru it and against the plate it should push it out .Go to a bearing shop and get a new one for a couple of dollars.If they don't have the exact size get someone to make one in a lathe out of a bearing.




 
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