Hi, I’m just after a bit of advice… I’ve been looking for somebody to balance the carbs on the vf1000r I’ve seen some of the Carb balancing kits you can buy… is it easy to do? And where do you adjust each carb.. Or is it something I should leave alone? Thanks Sean.
I did read the 4th carb is preset and you can’t adjust that! But Iam not sure
Carbie balancing is an art and essentially a pain in the ar$e. Yes, #4 is the master carbie and all others get their reference from it.
If I ever have the carbs off the bike I like to “manually” adjust them so all the throttle plates are open the same amount, I use a piece of 0.020" stainless lockwire to do this…so when the carbs are back on the bike, they’re usually very close to correct…and only minor adjustments are required to get them “spot-on”.
There are 3 adjusting screws aside from the idle screw which just acts on the #4 carbie, then all the other just follow the leader.
This is a pic of my VF1000R carbs, obviously upside-down, the 3 screws circled in red are the “other” adjustment screws.
I used to use a set of vacuum gauges but found them cumbersome and time consuming to use, I now use one of these below.
The nozzle of it fits perfectly into each rubber velocity stack and gives a quick and easy to read result.
You’ll also need one of these to get at the adjustment screws under the carbs, also a pain in the ar$e.
You adjust the idle screw first to get the idle speed you want, check the vacuum setting with the vacuum tool, then adjust #2 to the same vacuum value…then #3 and finally #1…Just be aware, ajusting one will affect the others so you’ll be going back & forth constantly.
Also be aware, poor valve clearance settings will have an effect on the final result…if they haven’t been set recently, it may be worth your time to get them right before you start fiddling with the carbs.
It’s well worth spending the time to get it right as the low end performance will suffer if the carbies not reasonably close to correct.
Hope this helps,
Smithy.
Hi that’s some great advice.. thankyou for your time Smithy 
Just set mine and used the tool smithy uses.
I used the vac gauges set up that have 4 side by side and attach to the vac ports on inlet track’s.
bit of a mission but can be done
I adjusted the one next to the number 4 first if this helps
I found to adjust on bike you have to shut engine down and wind on throttle a little adjust that one, rest throttle and check.
Don’t know how keen you are but compression test before adjusting valves as Smithy suggested and after might help
