Im just wondering if anyone can give me an idea of what i can do. I have a 2000 ZR600 and im getting the worst gas milage i have ever seen. Can only ride a few hours on a tank and its premium. I was out today and i was ridding with 2 Yamaha mountain max's a 600 and 700 triple.....and they were get way better milage then mine. i used about over 3/4 and the used maybe little under a half a tank. What would i need to do to get better milage on mine? Any help would be great

You can add a D&D power breather, this will allow it to get more air quicker. It worked well on my 01. You can also rejet if you know what your doing. I think with the breather I went down 1 size, before that I was like 3 sizes leaner. You will have to do your own testing though to make sure, I know mine was really hard on fuel and pig rich also.

Only currious, why are you running premium? have you done any mods that require it? That sled is good for maybe 12 m.p.g. on the high side. If it is stock, it will actually probably get worse mileage on premium than regular old 89.

I will have to try the breather. An for the premium gas....when i bought it the guy told me to run premium in it cause thats all its had in it. I was gonna run regular gas. Maybe i should, what do you think? No mods have been done to it...its stock. Nothing done to the engine

The breather is expensive. Maybe i will try regular gas, see if i get better milage. If not do you think it might be my jets?

If its stock, I personally would only run regular. Engine design is based on the grade of fuel it will run. Some premium fuels do have good detergent packages, but the packages in regular fuel today are pretty good too.
You are doing your wallet and your sled a disservice by running premium (ony my opinion, but I can back it up)
If it is factory jetting it is probably a little fat. AC sends them rich on purpose. If you are comfortable with tuning and piston wash, then jet down and find your proper size, it could possibly gain you a mile or two a gallon. If not then ask someone with a 2000ish zr600 what they are running at your elevation and learn from their research.
Sorry, my 600 is EFI, so I am not sure what a proper jetting is for a 2000 ZR600.

:D

I got as high as 14 mpg on my 2000 600.

Check your jetting (ohhhh....wait, ditch the EFI) and LOOSEN YOUR TRACK.

Most people run there tracks way too tight.

Carbs Rule!

:D

So I will assume the sled is has carbs for your last post. Definitely no need to waste your money on premium fuel with a stock engine. You are going to need to do a proper baseline jetting set up to make your sled run at it's peak efficiency. After that you will be able to calculate what main jet you need to run each time you ride based on the temperature of the day. This is where a Tempa-Flow is such a great accesory to add.

Find a nice flat stretch where you can run WFO for at least half a mile to a mile. The throttle has to be held to the bar with out letting off. With the throttle still to the bar hit the kill switch and stop the sled. Remove the spark plugs and check their colour and use a bend-a-light to examine the piston wash for ultimate fine tuning. You want the plugs to be cardboard, or coffee with cream colour. If the plugs are darker then you are rich on the main jet. If they are lighter then you are lean on the main jet. Change main jets and repeat the test until plug colour and piston wash are good. Repeat the process while running at half throttle and use the results to set your needle position. You must set your main jet before you can set your needle positon.

This process will give the correct jetting for the conditons you did the testing in. This will give a balanced jetting set up and you should only have to change the main jets to respond to the air temp and altitude each time you ride. Each main jet size is good for about a 10C range in temperature. This info will also let you calculate the correct jetting for -30C and then you can get a Tempa-Flow and let it adjust your fuel delivery automatically. When your sled is running the best it can it is much more enjoyable and you will know how far you can go on a tank of gas everytime you go out.

Hey I have a Power Breather I will sell you if your interested. It is used, but in fine shape. I don;t need it anymore. I will be at Tip-Up-Town till Monday, but then if you want we can work it out. I am thinking 1/2 of new price plus true shipping.

Let me know.

Wow thanks guys. Im sure thankful for all the help. Ill try the reg gas then the jets. And about that breather thanks and i will let you know within the next couple of weeks. Thanks alot again

jmho here but main jets are going to have little effect on your mpg unless you are running wide open .for trail riding at say 1/2 throttle you are being metered by the needle and needle jet .also as stated a loose track will net you some as well as a good clutch kit can net you more efficiency

jmho here but main jets are going to have little effect on your mpg unless you are running wide open .for trail riding at say 1/2 throttle you are being metered by the needle and needle jet .also as stated a loose track will net you some as well as a good clutch kit can net you more efficiency
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You have to remember that the main jet determines how much fuel flows through the needle jet. To properly set up your carbs you have to get the correct main jet first, then you tune your needle positon. From my experience i find it much easier to change main jets than needle clip position, especially out on the trail. With a properly balanced carb you only need to change the main jet as conditions change.

yamaha tripples do get very good gas milage.....you should compare your milage to other 600 twins.

You aren't using the gauge to measure your mileage, are you? On my old ZL 1/2 tank on the gauge meant only 3-4 gallons used. The ZRT's were even worse for accuracy.

You aren't using the gauge to measure your mileage, are you? On my old ZL 1/2 tank on the gauge meant only 3-4 gallons used. The ZRT's were even worse for accuracy.