Question about 2003 Yamaha YZ 450 F
Posted by Anonymous on
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2010 YZ450f starts but soon stops bike stalls FOUND ANSWER
YAMAHA YZ450F Owner Service Manual
OEM parts for Yamaha
Posted on Aug 10, 2016
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Posted on Jan 02, 2017
The bearing for the clutch outer drum may be worn. The adjustment on the handlebars is to set lever free play(about 1/2 inch) before the cable becomes tight and operates the clutch release inside. Make sure the outer drum cover is tight--check with the clutch lever to make sure the plate releases the disks and plates.
Posted on Oct 28, 2009
OK a cold starting YZ
yes you have nailed one cause but is unlikely if runs well until you switch off then cant restart but if you don't even get to ride for a while then I would not necesarily be re jeting but cleaning the jets and or replacing same size jets would be great place to start
the most common issue or maintenance is valve clearances and although they should not need to be adjusted to often they give you awefull starting problems if they are out of spec
and being the age of the bike I would consider getting leak down test done to varify the vales are in good shape and sealing well
Compression test of any use on your bike would be impossible as the auto decompression would hinder any results but if you could get past that issue then anything over 200 psi is good and will run fine on less but we all want the best so aim high I say
Posted on May 22, 2011
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