Question about 2005 Yamaha WR 450 F

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STARTER NOISE When hot my WR450 is making a screaming noise when the starter is engaged and then flattens the battery as the engine turns slowly and then will not turn over. When cold it seems ok but still a slight noise. Sounds like the starter bearing grabbing the shaft when hot ??????????????

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Hi,

The starter is deffinately 'dragging'.
Chances are that it has dropped a bush.
I'm not sure if Yamaha does a servie kit for the starter, but your local dealer will give you that info.

Most good auto electricians should be able to assist you.

To test the starter, place a multi metre across the battery terminals(the battery must be fully charged). Crank the motor and check how many amps the starter is drawing. Anything more than 30 amps is a sure sign of a failing starter.

Good luck

Jon

Posted on Mar 09, 2009

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2. Battery cables faulty due corroded or broken internal wiring at the cable connector especially the "NEGATIVE" cable which needs to be checked at "BOTH" ends.
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For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Bike has trouble starting Won turn over clicks sometimes Bad battery...
http://www.r1-forum.com/forums/102-00-01-r1-mechanical-help/39482-bike-wont-start-clicking-sound-under-seat.html
https://r1videos.files.wordpress.com/2011/04/2002-2003-yamaha-r1-service-manual.pdf
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

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