Hello All: 1st Thanks for any help.
I'm new here but try to help out when I can, some of you JUST know a load. Been leaning alot also, ok I'm putting the trx carb on my mach (predator 500). I live at 5000' and thought someone on heres has a 450 and lives around 5000'.

This way I would have a idea on were to start my jetting, went to the local honda dealer. To buy jets and ask him what he runs, and he said the stock 118 main. That he never open it up (carb) & ran it out of the box. Has not check the plug to change it. (WOW) I thought, he is a new dealer also. He been running this mach hard also.

I also ice race alot, and would like to keep the carb heater assy working on this carb. I see it's 12v but I know there must be a relay that it runs up to. Maybe the radiator, just guessing. Any help on how to keep it working would be great.

This is a stock carb needle also, we did try looking up different mains but could'nt find any info in the manual on it. My mach is stock also, mostly.

later :ph34r:

Anybody, Thanks

I've heard people are using a 180-190 main jet

start at a 160mj and go up from there.

in 450r i run a 185 mj dynojet needle on 4th clip an about 2.75 turns out on the fuel screw im piped cammed K&N an HRC lid hope this helps