nightmoves
New Member
*// Basically, I'm looking for the proper way to restore a carburetor back to its original factory jetting and where to source the parts necessary to do so. //*
After taking a deeper look at my carbs last weekend, I've come to the conclusion that the previous owner really had no idea what they were doing and just went to swapping out jets with reckless abandon. One jet was missing, almost all of them are stripped, and some don't even match their respective mates in the opposing carb. I would start with replacing the sizes I have already, but they're so far off I need to replace them all at once.
So, I need to get back to a factory default carb setup with the factory jet sizes, that way I have a reliable baseline from which to actually tune the bike properly. Seeing as how I'm still relatively new to bike maintenance, this is my first carburetor overhaul. I checked my factory manual and found this:
1982 Kawasaki KZ440 A LTD Belt
Jet Needle- N02A
Main Jet(primary)- #70
Main Jet(secondary)- #88
Air Jet(pilot)- #125
Air Jet(primary main)- #130
Air Jet(secondary main)- #50
Pilot Jet- #35
I scoured the forums and elsewhere to confirm part numbers and matching jet sizes, but there doesn't seem to be a clear explanation for finding this info. For example, I made my way to PJ Motorsports and found that they offer a "sizing guide" for various models (but don't guarantee their suggested sizing information). They suggest KeiHin N424-26 for the slow / pilot jet and KeiHin 99101-393 for the main jet. So, I guess my question is, which jets are which in relation to the info my manual gives? Am I missing something really fundamental here? And is there a better place to look for individual carb jets? I also checked DynoJets, JetsRus, and Zenterprises, but just got more confused as I went on.
I apologize in advance if this is a dumb question. I'm trying to learn as much as possible on my own, but this one has really got me stumped at the moment.
Thanks!
After taking a deeper look at my carbs last weekend, I've come to the conclusion that the previous owner really had no idea what they were doing and just went to swapping out jets with reckless abandon. One jet was missing, almost all of them are stripped, and some don't even match their respective mates in the opposing carb. I would start with replacing the sizes I have already, but they're so far off I need to replace them all at once.
So, I need to get back to a factory default carb setup with the factory jet sizes, that way I have a reliable baseline from which to actually tune the bike properly. Seeing as how I'm still relatively new to bike maintenance, this is my first carburetor overhaul. I checked my factory manual and found this:
1982 Kawasaki KZ440 A LTD Belt
Jet Needle- N02A
Main Jet(primary)- #70
Main Jet(secondary)- #88
Air Jet(pilot)- #125
Air Jet(primary main)- #130
Air Jet(secondary main)- #50
Pilot Jet- #35
I scoured the forums and elsewhere to confirm part numbers and matching jet sizes, but there doesn't seem to be a clear explanation for finding this info. For example, I made my way to PJ Motorsports and found that they offer a "sizing guide" for various models (but don't guarantee their suggested sizing information). They suggest KeiHin N424-26 for the slow / pilot jet and KeiHin 99101-393 for the main jet. So, I guess my question is, which jets are which in relation to the info my manual gives? Am I missing something really fundamental here? And is there a better place to look for individual carb jets? I also checked DynoJets, JetsRus, and Zenterprises, but just got more confused as I went on.
I apologize in advance if this is a dumb question. I'm trying to learn as much as possible on my own, but this one has really got me stumped at the moment.
Thanks!