There is an adjustment screw on the throttle body end with a jam nut to hold it in place. Loosen the jam nut while holding the adjustment screw with an allen wrench, Turn it clockwise to raise the oil pump lever arm ( increases oil consumption). You match up some marks that are down on the pump that are real hard to see,need a mirror or for info My setting took 3 complete turns clockwise to be correct. I adjusted from the muffler side of the sled,more room than on the clutch side
What is your factory oil/fuel ratio?
- Thread starter NWBackcountry
- Start date
There is an adjustment screw on the throttle body end with a jam nut to hold it in place. Loosen the jam nut while holding the adjustment screw with an allen wrench, Turn it clockwise to raise the oil pump lever arm ( increases oil consumption). You match up some marks that are down on the pump that are real hard to see,need a mirror or for info My setting took 3 complete turns clockwise to be correct. I adjusted from the muffler side of the sled,more room than on the clutch side
L
lognomore
Well-known member
How much stuff did you have to move to get to the adjustment? Interested in doing the same.
N
NWBackcountry
Member
Dragonfire,
Did you figure out what the ratio was from the factory before you made the adjustment? What ratio did you end up with?
G
gman086
Well-known member
X
xc6rider
Well-known member
Yea, designed by the EPA to run less oil, not for longevity! No two strokes have ever been reliable less than 40:1. Lots of race engines are run leaner (50:1 all the way down to 100:1), but they're rebuilt very frequently.
Granted, some engine components are manufactured to higher standards these days, but they're also creating more power and under more stress. I have a very hard time buying into the idea of using less oil.
Granted, some engine components are manufactured to higher standards these days, but they're also creating more power and under more stress. I have a very hard time buying into the idea of using less oil.
...
Thanks MH for getting this attachment uploaded. I could not get it to go on snowest and could only e-mail it to you. Thanks again as I don't think dealers will do this,as some would say it to be normal maintenance.
oil pump setting
IT is your 12000 dollar snowmobile, What oil-pump ratio do you think will make your motor survive? The dealer tells you it is fine the way it is so he does not have to adjust it. If you read the instructions it tells you to align the notch on the oil pump lever with the scribe mark on the oil pump. If these two are aligned then the oil pump is set according to POLARIS specs. That is where mine is set and it uses alot more oil than when I first got it. This is polaris specs not just somebodys opinion.If these motors survive longer we and Polaris are both winners. Just my opinion.
IT is your 12000 dollar snowmobile, What oil-pump ratio do you think will make your motor survive? The dealer tells you it is fine the way it is so he does not have to adjust it. If you read the instructions it tells you to align the notch on the oil pump lever with the scribe mark on the oil pump. If these two are aligned then the oil pump is set according to POLARIS specs. That is where mine is set and it uses alot more oil than when I first got it. This is polaris specs not just somebodys opinion.If these motors survive longer we and Polaris are both winners. Just my opinion.
When i got mine, the dealer told me if it does use about a quart per tank to bring it back so they could adjust it. Thats what it uses, fouls a few plugs but $2 plugs are cheaper than a $2000 rebuild
Polaris is tettering on that fine line between EPA emission regs, and warranty claims/customer satisfaction. They want the motor to live - till the warranty is up. They do make money on parts, by the way, after warranty. Dealer does, too. They are just shooting for an acceptable MTBF - mean time between failure. So, we run high quality (assumed), high priced oil (Gold Plus), at a barely adequate flow rate to not fall off the rail. For awhile.
I've seen it claimed around here, but I still need to understand the statements from a dealer(s) and poo mech(s) that running a 10-20% increase in oil consumption from the pump will impact the other electronics and fuel flow rates. That's implied in a few threads around here - these are not even DI 2 strokes. If it was that smart, the oil pump would be electronic and not attached to the TB's via an arm. So, how, exactly, does the CPU know how much oil is going to the mains? It doesn't. If these motors were that smart, you couldn't even run breakin oil in the tank without telling it what you were doing. Just say'in...
I've seen it claimed around here, but I still need to understand the statements from a dealer(s) and poo mech(s) that running a 10-20% increase in oil consumption from the pump will impact the other electronics and fuel flow rates. That's implied in a few threads around here - these are not even DI 2 strokes. If it was that smart, the oil pump would be electronic and not attached to the TB's via an arm. So, how, exactly, does the CPU know how much oil is going to the mains? It doesn't. If these motors were that smart, you couldn't even run breakin oil in the tank without telling it what you were doing. Just say'in...
M
modsledr
Well-known member
FYI...on the Polaris, oil does not go to the fuel injectors...it goes to oil nozzles at each crank/rod bearing (I'm agreeing with what you are saying).
G
gman086
Well-known member
SO... how much is everyone turning up the oil pump? I don't think it needs to be 40:1 considering the above info. Maybe one turn? Adjusting to get the marks aligned was for the old sleds - doesn't necessarily imply for this motor as they could just be using some of the same parts?
Have FUN!
G
Have FUN!
G
So... Turning the screw clockwise raises the oil pump. Does this increase the oil flow. Anyone know for sure. I don't see the marks. Very hard to get at even with a mirror. Also looks like a slotted screw in the jam nut, not a allen screw on mine. 2011 pro Can anyone confirm this.
Yes clockwise increases oil flow and yes I do Think the screw is slotted. I adjusted mine last fall and can't remember. Three turns lined up the notch on the lever with mark on pump. I did the adjustment when I put v-force reeds in at the same time. which makes seeing the marks easier or just turn the screw 2 turns clockwise and see how much oil you use and if your happy,you are good to go. Hope this helps.
D
dmkhnr
Well-known member
My screw was slotted. I went 1 turn.
When I first checked mine it was 70 to 1. I adjusted it per Mountainhorse's instructions,
about 3 turns to get the marks right. Checked it today and now it is 48 to 1.
I will check it again the next time I ride.
about 3 turns to get the marks right. Checked it today and now it is 48 to 1.
I will check it again the next time I ride.
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