T500M Jetting

[citizenbanana]

Hi all,

Hoping for some jetting advice, they are hard to come by where I live so trial and error is difficult.. Stock bore, stock pipes, just have cheap aftermarket pods (had to chuck my stock air box) Bike is running with the stock 97.5 main 30 pilot and stock jet needle. This is the first time starting the bike for me...id imagine it hasn't run for years. Carbs are clean, timing is ok, new rings and hone, good spark, clean exhaust etc.

Starts and idles fine, the bike barely moves 0 to1/4 throttle. Starts to wake up 1/4 to 1/2 and then abruptly comes to life and seems to develop decent power at higher throttle.

Any advice on where to start with jets or anything else? Bike is all stock except for the carb pods

Thanks!

[daxman]

Hi

I had similar symptoms on my 250 - then realised the timing was out slightly - check that first. Then I guess you could try bigger pilots then raise teh needles a notch.

Cheers

[Zunspec4]

Hi,

That sounds like carbs with the slides in backwards. Easy to check, the curved cut away in the slide should face your pod filters.

Cheers Geoff

[citizenbanana]

Thanks Daxman and Zunspec. Good call but just checked the timing, slides are in correct (i've been there before lol). Just curious before I blow a bunch of money on jets if somebody had a setup that works to start with for a stock bike with pods

[dollydog]

hi mate, the only advice i can give you is start big on main jets, then work your way down. also try adjusting the pilot air screw. with pods it should be running leaner, so try 1/4 turn in on each screw, just to richen it up slightly. obviously if it's no better just put it back to where it was. if it is better then try another 1/4 turn in - ditto
cheers, dd.
p.s. on main jets i'd start at 112.5 and #35 pilots

[Dragonknee]

So I'm doing jetting as well as the electronic ignition. I have the 110 mains and putting in 35 pilots. What is the best starting point for the air mixture screws..How many turns out to start.??

[karl pa]

So I'm doing jetting as well as the electronic ignition. I have the 110 mains and putting in 35 pilots. What is the best starting point for the air mixture screws..How many turns out to start.??

What year and modifications ? The early 500 had a totally different carb than later ones. If it is a later 500 with no modifications, stock jets were 97.5 and pilots were 30, so your 110 mains and 35 pilots may be on the rich side. If your running without airbox you will need to go rich.
You may be better off to start a new topic on it rather than post here.