Throttle Body Synchronization
I have noticed that the F800's do not require a throttle body synchronization (TBS) in their Service Schedule. I'm sure its a dumb question, but why is that?
I don't think it's a dumb question...
I want to know also ...
It's not on the maint. schedule, and there is no procedure for it (at least that I can find) in the BMW manual either.....
maybe just the way the throttle bodies are "put together" makes it impossible for them to get OUT of sync. unlike the boxers and other bikes?
Essentially correct. Combine that with being able to safely put the valve checks on a 24K mile schedule and it is a very easy bike to maintain.
Originally Posted by jimbob59
Tm Pterodactyl MT Outpost
We got in the habit of synchronizing carburetors on Airheads and throttle bodies on Oilheads because the only connection between the two carbs or throttle bodies was that thin, sometimes stretching system of cables reaching the two carbs or throttle bodies way over here and over there on the other side of the bike.
We never thought about it on classic K bikes because the three or four throttle bodies were very close together and were tightly mechanically linked with a sturdy linkage. Only after a huge number of miles was it ever necessary to tweak things a little bit by adjusting air bypass screws to somewhat account for mechanical wear.
That is what is going on with the F twins. Two closely spaced, mechanically linked throttle bodies. I wouldn't worry about them for a hundred thousand miles or so and then I might see what is happening vacuum wise. Voni's F800S is now approaching 80K miles so maybe next year I'll think about it. With a locked mechanical linkage the throttle plate angles ought to stay the same almost forever.
Paul Glaves - "Big Bend", Texas U.S.A
"The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
Thanks, guys. Makes sense.