Maintenance & Technical > KX500 Original

Gas Mileage?

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KXcam22:
Dezracer,
   Like Gowen, on medium speed single track I can do a full day on a tank, anywhere from 60 to100 miles, 1st to 4th stuff but too narly for too much WOT.  Mine is jetted really nice and crisp, 55p 165main at 1100-6000'.  Depending on your elevation and riding type going smaller from the stock 168 makes a nice change in throttle response at 3/4 and up.  Cam.

dezracer:
Thanks for the info everyone.  I think I'm going to check the float level and adjust it if necessary.  Anyone know what the specs are for the float level? It's a 97. The bike runs strong and has great throttle response.  I think the jetting is close to where it needs to be, maybe drop a size on the main jet.  If that doesn't work than I'll have someone else take a look at it.  Thanks :D

KXcam22:
Dezracer,
  Look in the jetting thread.  I put a detail of an easy way to set it using an piece of fuel line. Cam.

KXcam22:
Dezracer,
  I had a thought last night on possibly why some K5's might get poor mileage.  I have run my float both high and low and didn't notice any performance difference.  What I did notice with a high float, when riding in gnarly stuff, was the amount of gas that comes out the carb overlfow.  With a high float level, my bike would piss out a bit of gas everytime it was not perfectly horizontal (ie, when it's leaned against a tree so you can help your buds climb the hills you waltz up, and even on the ride/climb itself).  This could amount to a small but significant amount of gas over the course of a long ride.  I think I might test this sometime - set it high and put a beer can on my overflows before a big ride.  Whatever you do don't mention this to the EPA or the California guys will have to have a govt. certified float level calibration sticker (more $$) to ride. Cam.

Rowdy-Yates:
Cam SHHHHHHHHHHHHH dont give them any ideas here in CA. My float level right now is high. If I lean my bike on anything the gas will pour out. So I am guessing you probably found the answer. Oh btw I could not find your post on using the fuel line. I really want to do this. I need to lower my float level just a little.

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