mknmoede

I Have A 600 Twin That Gets 6 Mpg. I Cannot Figure Out Why. Here Is What I Tried Already. Different Carbs, Different Cdi Replaced The Reeds, Good Compression And Clutches Are Good. It Idles Fine And Will Get Up To 90 Mph But Not As Quick As It Should. Can Anyone Help.

badbrad

check for leaks

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Whatever is written above is just my $.02

My family puts the "fun" back in dysFUNctional.

whoever said nothing is impossible, never tried slamming a revolving door

RJ Gleason

change the top sprocket in the chain case to 1 tooth larger and check that the clutches are clean and operating smoothly.

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Old Cat Rider


w/ Comet 108 Pro-4 clutch


80 PANTERA 500 F/C w/ Comet 102 clutch

'90 Wildcat Project in progress.

Trail Boss; Dryden to Summerhill trail.
http://www.dcdrifters.net/

Senior Deacon; F&AM Lodge# 472

IndianRvrShiver

......and make sure the belt isn't worn out!

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2003 AC F5 (Jr's Dec 07 SOTM & 2008 SOTY)
2003 AC F7 EFI SP (April 06 SOTM)
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Bakemono

That engine was never known for very good gas milage. You arent the first person Ive heard of who has unhappy with the fuel economy of that sled.
One other thing to look at is the jets. Yamaha jetted those sleds pig rich from the factory. You could go down 1 jet size and probably pick up 1 or 2 mpg.
No matter what you do though, that engine is never going to be a fuel miser.

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Vision without action is a daydream. Action without vision is a nightmare.
- Japanese proverb
www.myspace.com/snowmobileracer36

IndianRvrShiver

SnowRida has a Yami V-Max 600 twin.....seemed he was always buying more fuel than the rest of us. One time, he almost ran out until some nice damsel saved his ass!!

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2003 AC F5 (Jr's Dec 07 SOTM & 2008 SOTY)
2003 AC F7 EFI SP (April 06 SOTM)
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SnowRida

This is true. This gal stopped in her car while we were on the side of the road, and said to follow her to her place, and she gave me some gas to make it back to a gas station. I had her sent some flowers for the great help she provided.
I wouldn't brag about the gas milage on these sleds.

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SnowRida
Against the wind, let the cowboy's RIDE!

Yamaha V-Max
02 MXZ 600
97 Polaris Indy Trail Touring


Official Sled of the Month Judge

Skligmund

I thought my 700 was bad... Try taking out a plug and capping off the fuel line to one of your carbs lol

I learned a 700 RMK can do 60 MPH on one cylinder. This what when it was new, had a CDI box go bad (was a recall/service bulletin anyways).

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1997 Polaris Indy 700 RMK - Twin SLP pipes, EGT gauges -- "Fukengruven"
1997 Polaris Indy Trail RMK 488 - Stock -- "Yard Sale"
1980 Polaris TX-L 340 - Stock

Teslarocks

I have the same sled and seem to get pretty good gas mileage.
Almost as good as my 87 Phazer.
I hope this does'nt start happening to mine.
Maybe your just gettin on that gas to hard.

pohldog

I had the same sled I messed with everything trying to figure it out It would use twice the gas of any other sleds i rode with. But finally I figured out how to solve this problem I sold the dam thing.

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2000 Polaris XC700
1997 yamaha 600sx
1980 Yamaha Enticer 340: my daughters
Too many tractors