OK I've been having problems with my sled (2000 RMK 500) getting 4 MPG all winter
Carbs are clean, fuel pump rebuilt, jets are correct, new floats, choke is working properly, checked the reeds.... they look great, track is nice and loose (to spec) clutches are aligned to spec and it's NOT leaking gas anywhere.......carbs are synced ..... compression is good in both cylinders
I was out camping and riding for 4 days (check this out if you have a chance!! http://www.arcticman.com/welcome.htm ).....so I had a lot of time to monkey with it along with a Polaris mechanic..... he even used some kind of "venturi meter" to check the carbs and they were "fine"
Besides the 4MPG .....the PTO side plug looks textbook, the Mag side is wet and not black or brown or anything......it's just wet
we changed the spark plug cap and it seemed to be getting better spark and in fact the plug started turning black and even at one point chocolate brown but at the end of the day it was back to clear and wet and 4MPG.......
I think the Mag side is not getting as strong a spark as the PTO side and a lot of gas is washing past at low RPM and on and off throttle riding (the last mile or so back to camp is badly moguled up so you're just thumping over bumps the whole way at a few miles per hour on and off the throttle contantly)
and the cap we used was still a little loose so with the weaker spark and the looser cap I'm thinking that was adding up to a LOT of unburned gas which washed the plug darn near clean by the time I get back to camp.......
Would replacing the voltage regulator and new caps fix this? (I already did new wires) or would I have to go all the way back to the magneto???
He told me the belt is also really loose in the primary clutch and I can fix that with the shims so that's why it's taking a while to engage.......
Could this be "most" of the mileage problem?
Bottom line is my son and I are going mostly the same places on our sleds although he's off in the powder a LOT more and goes maybe 4 or 5 miles more overall........
I take 7.5 gallons and he takes 4 in his 700 RMK........
I'm pretty much out of other ideas but if you have them I'd love to hear them!
Carbs are clean, fuel pump rebuilt, jets are correct, new floats, choke is working properly, checked the reeds.... they look great, track is nice and loose (to spec) clutches are aligned to spec and it's NOT leaking gas anywhere.......carbs are synced ..... compression is good in both cylinders
I was out camping and riding for 4 days (check this out if you have a chance!! http://www.arcticman.com/welcome.htm ).....so I had a lot of time to monkey with it along with a Polaris mechanic..... he even used some kind of "venturi meter" to check the carbs and they were "fine"
Besides the 4MPG .....the PTO side plug looks textbook, the Mag side is wet and not black or brown or anything......it's just wet
we changed the spark plug cap and it seemed to be getting better spark and in fact the plug started turning black and even at one point chocolate brown but at the end of the day it was back to clear and wet and 4MPG.......
I think the Mag side is not getting as strong a spark as the PTO side and a lot of gas is washing past at low RPM and on and off throttle riding (the last mile or so back to camp is badly moguled up so you're just thumping over bumps the whole way at a few miles per hour on and off the throttle contantly)
and the cap we used was still a little loose so with the weaker spark and the looser cap I'm thinking that was adding up to a LOT of unburned gas which washed the plug darn near clean by the time I get back to camp.......
Would replacing the voltage regulator and new caps fix this? (I already did new wires) or would I have to go all the way back to the magneto???
He told me the belt is also really loose in the primary clutch and I can fix that with the shims so that's why it's taking a while to engage.......
Could this be "most" of the mileage problem?
Bottom line is my son and I are going mostly the same places on our sleds although he's off in the powder a LOT more and goes maybe 4 or 5 miles more overall........
I take 7.5 gallons and he takes 4 in his 700 RMK........
I'm pretty much out of other ideas but if you have them I'd love to hear them!