So are those readings from just hooking it up and running or have u actually adjusted the sync screws ?
Just running it, adjusting 3rd made little to almost no difference. Sent from my iPhone using Tapatalk
The tool only takes a reading when running, if you check out the link earlier in the post you’ll see it’s specs Sent from my iPhone using Tapatalk
You were adjusting the 3x sync screw's from underneath, or at least the r/h one ? (between carb's 3 and 4) They'd all be Zero's ?
Which screw were u adjusting to try and bring the #3 carb into sync? #2 is your base carb , so the screw between carb 2 and 3 is the one u move to get carb 3 into sync ( to match carb 2) .... then when 3 matches/or is close to 2 , u match 4 to 3 with the screw thats between carb 4 and 3 And for those playing at home .... carb #1 is on the left when sitting on the bike ... and the actual numbers mean nothing ... they just all need to be about the same, and every time u adjust a screw u should blip the throttle and let the idle settle
Started the bike this morning... started in less than a second and had this really nice bass tone to it.. I lifted the fuel lid only to find that the short filter on the petcock had slipped out of place. Can I use some kind of adhesive to secure it? (I did empty the tank and put it back but it moved again when I started the bike) Sent from my iPhone using Tapatalk
I can’t find any screws between the carbs, only the ones in the pic up the top and the ones recessed directly underneath Sent from my iPhone using Tapatalk
Wrong side of the carbs , it should be on the side where the diaphram caps are not the the float bowl side
I found this video in YouTube Andy explains carb tuning quite well I’ve binge watched a few of episodes on Andy’s channel. Sent from my iPhone using Tapatalk
They're hiding in your picture, inbetween carb's 1 and 2, 2 and 3, and 3 and 4 Rotate this picture 180 degree's Not on a Zeal or FZR250R
@my67xr Yeah true, what threw me was 1&4 are facing the engine and 3 is facing the air box at a 45 degree angle making it impossible to get to without removing the air box and turning the tank sideways (because I don’t have a fuel feeder or hose to make one).
"1&4 are facing the engine and 3 is facing the air box at a 45 degree angle " I don't understand what you mean. All the throttle synchronisation screws face in the same direction as per the image that @my67xr sent.
Pulled the carbs to give you all a better look at what I’m working with/on. Different setup to the fzr.
Anne, those carbs don't look right. Take a picture from the engine side of the carbs and post it please. Like the picture below. If the carbs are configured properly, then you may have to balance 2 and 3 and then 1 to 2 and 4 to 3 depending on how easy it is to get to the middle adjustment screw. Your idle might fluctuate while you're doing that, but you can adjust that as you go. Personally, I would try bench balancing the carbs first. There must be a special Yamaha tool for balancing the carbs. I can't imagine it would be too easy to get to all three of those adjustment screws with the engine running.
