hi ive finally narrowed my spark knocking lt500 down to the jetting i was wondering if anyone knows what the stock jets are and needle, i have a 39mm kehein, the only mods to the motor is that its bored 40 over any help would be greatly appreciated. thanks Brandon

 

I have the factory service manual.... Just let me know the year as 87's were different than 88 thru 90. And I don't believe Keheins were stock issue.

 

yeah it should be a mikuni but somebody switched it ,yes it is an 87, if you could just give me the stock numbers i can cross-reference them, thanks alot for your help