1996 r850r
SOURCE: how do you reset the throttle body limiter screw (
Do you have a vacuum comparison guage? You need some kind of guage setup to work on the TB sync.
Here is what I would do:
-perform a valve clearance check/adjustment to ensure everything is in spec. (this does make a difference!)
-Ride bike for 10-15 minutes, make sure it is fully warmed up.
-connect your vacuum guages to each throttle body.
-ensure that there is throttle cable slack on each throttle body. You don't want the cables holding the throttle plates open at this stage.
-set the brass air screws out equal turns on each side. Start with one and a half turns from bottomed.
-start engine (it may not want to idle, so open brass screws another half turn till it idles)and check vacuum guages.... see how far out things are at this stage.
-adjust throttle stop screw(s) so that each throttle body is set-up exactly the same.
-Once the throttle bodies are adjusted so that the vacuum is exactly the same at idle, start to remove slack from the throttle cables so that vacuum stays the same on each side as the throttle is opened.
-above all, you want the throttle plates to rest on the stops at idle and the cables adjusted with enough slack to allow this to happen. DO NOT tighten the cables too much as this causes the throttle plates to "bounce" at idle and wears out the throttle plate shaft bores quickly.
I think that about covers it, Post back if you have questions.
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