I got a zilla today have ?s

RCDRIVER · #1 (**permalink**) 05-25-2005

Today i traded my lt250r for a zilla (i'll post pic's tomarrow) it's not in to bad of shape but it vibrates like crazy , so i think the counter balancer is not set up right so can any one tell me how to set it up and also it is running rich the guy i got it from said it had a 390 main jet i don't know much about what size main it should have , can someone give me a base line of would it should have .I'm running around 500 to 1000 feet above sea level with a fmf pipe and silencer , uni filter , boyseen reeds other then that its stock . Any help that you could give me would help me out a lot .

Thanks , Jeff

zillaguy89 · #2 (**permalink**) 05-25-2005

Check the motor mount bolts first. You'll have to pull the clutch cover to check the timing on the balance shaft. Vibration is just something a zilla does. as far as the jetting, I have an FMF and boyesen reeds and a 39mm carb, the jet in mine is a 420. I am 700 feet above sea level, give or take

Kane · #3 (**permalink**) 05-25-2005

See that box at the bottom that says "forum jump"? select "manuals" and download the LT500 manual. It will answer most of your questions.
87 has a stock main of 420 and 88-90 use 380. All years came with 4 spare jets to play with for altitude diff's. They varied by 20's, 2-up and 2-down from stock. All years used the same stock TM style 38mm carb but varied on slides, needles, and jets.

RCDRIVER · #4 (**permalink**) 05-25-2005

thanks for the info i'll let you know how i make out with it . thanks again

Jeff

RCDRIVER · #5 (**permalink**) 05-27-2005

i took it apart today and the counter balancer was of 180 and the nut that holds the two gears on the crank back off the threads the hole way and wore the case a little bit so now i have to clean the clutchs to get all the filing off them .so i guess it was a good thing that i had to check the balancer .

Jeff

RCDRIVER · #6 (**permalink**) 05-30-2005

I got it out for a ride yesturday and it working good i had to go to a 330 main jet and its still running a little bit on the rich side but its good for now . Here is a pic of it , its not very pretty right now but i can fix that with a little work .

Later , Jeff

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