Question about Suzuki Motorcycles
Sounds like a clogged carburetor, most likely due to ethanol fuel.
Clean the Carb.
2nd problem could be a clogged air cleaner.
Since that is easier, you might check that first.
then refer to above.
Posted on Nov 15, 2016
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Posted on Jan 02, 2017
on the carb is a mixture screw fiddle with this on pic below just turn it in and unscrew it 2 turns and try it out get back to me
Posted on Sep 20, 2009
Testimonial: "Duh. I hadn't remembered that I had to fiddle with the mixture last race due to the bike getting out of tune. Thanks, Man."
SOURCE: 2007 CRF 450 R- from
This can only be lack of fuel for some reason backfire is nearly always lean fuel condition and the cut out pretty much confirms lean or no fuel?
I would be checking the size of main jet (they numbered) double check it is factory size? I would check the needle clip position god knows why but people change the position so double check it is factory setting (usually 3 or 4 notches from top is factory setting I forget which one it is for Honda's) I would double check your air filter is clean and/or not oil drenched
refer to your manual or ring your Honda dealer for all the specs
Some other possibilities would be spark plug fail at high load (but unlikely?) stator failing at high RPM ( unlikely but worth the two minute multi meter test to make sure resistances is still in spec)
good luck regards Jamie
Posted on Jun 25, 2011
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