How To Adjust Throttle Free Play And Why - Kawasaki Vulcan Forum : Vulcan Forums
 
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post #1 of 1 (permalink) Old 03-14-2016, 10:38 AM Thread Starter
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How To Adjust Throttle Free Play And Why


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One hallmark of a skilled rider is the ability to precisely deliver the right amount of throttle at the right time. Smooth transitions on and off the throttle play a vital role in keeping the chassis stable in a corner. Since the throttle cables are still, for the majority of bikes, the direct link between your hand and the butterfly valves in the mixers, minimizing slop in the system will pay big dividends.

To check the throttle free play, hold the grip between your fingers and roll it back and forth until you begin to feel the pull of the cable. Pick a spot on the grip and watch it to measure the free play. If you have trouble visualizing the measurement, hold a metric tape measure up to the grip. Most factory manuals will tell you that 2–3mm is the correct amount of throttle free play.

Once you’ve determined if the free play needs adjustment, loosen the cable’s locking nut(s) near the throttle grip. Some bikes will only have one adjuster. For two-adjuster models, loosen the nuts until there is plenty of slack. Next, tighten the deceleration adjuster (the cable that pulls the grip into the throttle-closed position) so that there is no slack when the throttle is held closed. Tighten the deceleration locking nut. Now, adjust the acceleration cable’s adjuster until the desired amount of free play is present in the grip and tighten its locking nut. Ensure that there are plenty of threads (at least three) engaged in the adjuster body.

If you can’t get the proper amount of free play with the adjusters, you’ll need to take up some slack down by the throttle bodies. So, set the adjuster back into the middle of its range before making any changes by the throttle body’s bell crank. The lower cable adjustment involves loosening the cable’s lock nut, making the change to the adjustment nut, tightening the lock nut back in position, and rechecking the throttle free play. Fine-tuning can take place with the adjuster by the grip.
Read more about How To Adjust Throttle Free Play And Why at Motorcycle.com.
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