Honda ATVs - Recent Questions, Troubleshooting & Support
2009 Honda Big Red MVU 700 is bogging down and is
Camshaft lobes are worn way down, not opening valves enough, and throwing off valve timing. Replace camshaft and followers. Make sure cam chain is still good. If cam chain is good, it's a fairly easy job.
How to adjust idle on a trx450r
Hi,
You adjust the idle screw on the carburetor, to do this you will need to run the ATV, rev it and tweak the idle and throttle screws accordingly. Between revs you will need to adjust the idle screw and the throttle screw if needed.
Valve adjustment
Set motor to TDC compression stroke. Watch intake valve open and close.. when it closes continue to turn to timing mark.
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