Oil Pump Adjustment

[glassman]

If you don't want to go through the hassel of the gas tank and air box removal... you can take a long flathead screw driver or pry bar and wedge in under the plate to pull it back up in a "90 deg" position. Might crack the plastic spring sleeve underneith, but that won't effect anything. If it's to the "right" like you say I'm thinking toward you when looking at it from the front of the sled. Might be able to just push it back after you pry it into the vertical 90deg position. If not the nut could probably go out one more turn to compensate.

Take the gas tank off and visually inspect the alignment marks. The tab can also be bent up or down in this case, and you cannot tell, without actually looking at the alignment marks. If the tab is bent in either direction, It will indeed effect the ratio.

On another note, By turning up the settings, i have noticeable increased the oil consumption in my machine. Whether is is at full throttle or not, the consumption was still too low for my liking. If you burn a full tank, you should be burning at least a full litre of oil (im canadian eh) Whether you are at full throttle or not, the ratio should still be at least 40:1 for my liking.

 

[NWBackcountry]

Thanks for the advice. Took it all apart and straightened the adjuster. I adjusted it to the scribe mark. I will see what my ratio is after tomorrows ride and adjust from there. I also add some oil to the fuel.

 

[Rally2]

Adjusted oil pump last weekend so took a few pics to show how easy. Remove hood and access from above. I used a 1/4" drive 8mm socket and u-joint with a 1/4" to 3/8" adapter and a couple long 3/8" extensions and 3/8" ratchet. I did 3 full turns and there is still a couple threads showing on the adjuster. Oil consumption definitely went up last ride, haven't confirmed the ratio yet but I will. Sled ran fine with the adjuster cranked plus I was running 80:1 in the tank as well.

 

[DLynn]

My 12 was set at 89:1 from the factory and my 11 was 78:1. I have them both at 50:1 now. You have to be careful not to bend the linkage at the adjustment nut over the throttle body. I inserted a large screw driver beside the adjuster so when you turn the lock nut it wont bend the linkage. I removed the exhaust can and with a mirror it was very easy to see the arm on the oil pump. There is a large V cut on the oil pump lever and a scribe line on the pump it's self. I have mine set to the bottom of the V and it's 50:1. Both of my sleds were set at the top of the V from the factory. I did talk to my dealer and he said Polaris wouldn't get excited about increasing the oil flow. Now the tree huger's are another story!

 

[Aussie Niko]

Adjusted oil pump last weekend so took a few pics to show how easy. Remove hood and access from above. I used a 1/4" drive 8mm socket and u-joint with a 1/4" to 3/8" adapter and a couple long 3/8" extensions and 3/8" ratchet. I did 3 full turns and there is still a couple threads showing on the adjuster. Oil consumption definitely went up last ride, haven't confirmed the ratio yet but I will. Sled ran fine with the adjuster cranked plus I was running 80:1 in the tank as well.

Without seeing the scribe lines how do you know how far to turn the screw in??

 

[Rally2]

Without seeing the scribe lines how do you know how far to turn the screw in??

I didn't take a very scientific approach just loosened the locknut turned the adjuster in about 3 turns and tightened 'er back up. Before this the dealer checked the scribe mark and said it was correct but to me seemed to be just sipping oil so I cranked it up. I figure worst that would happen is bogging/loading/fouling plugs which I can deal with if becomes a problem.

 

[DLynn]

Without seeing the scribe lines how do you know how far to turn the screw in??

Hi Niko
I used a small round mirror on an adjustable rod. Slide it in behind the oil pump and with a flash light you can clearly see the V and the scribe line. Hope that helped!

 

[Steelman]

Will we need to adjust the 13's?

 

[Oregonsledder]

Will we need to adjust the 13's?

I suspect you will. I doubt the EPA has lowered it's emissions requirements of manufacturers. You would never get Polaris or any other manufacturer to admit it, but they run all engines lean from an oil and fuel perspective IMHO to keep the EPA off their backs.

 

[Steelman]

I suspect you will. I doubt the EPA has lowered it's emissions requirements of manufacturers. You would never get Polaris or any other manufacturer to admit it, but they run all engines lean from an oil and fuel perspective IMHO to keep the EPA off their backs.

I will have my dealer look at it before I pick it up.

 

[Oregonsledder]

I will have my dealer look at it before I pick it up.

It would be a good idea to have the dealer verify the factory setting on the pump body, but they most likely won’t address the issue you are asking. They have to stay true to mother Polaris so, unless there has been some oil system change that I haven't heard about you will still need to turn up the pump and I would suggest adding oil to the fuel tank as well. Cheap insurance.

 

[roni87]

altitude

Mountain riding will make your oil ratio increase since there is less fuel going in. But the oil consumption will be correlated to the engine rpm no matter the elevation. I've noticed this everytime we head west.

I also always burned more gas than the m8's I rode with this winter (same distance drove and same riding style). Consistantly I would pump in 8 gallons and my buddies would put in 6.5 to 7. Burning more gas and the same amount of oil will give you a leaner ratio.

Just food for thought.

 

[DLynn]

As I see it:
If we look at what an oil pump does at a specific RPM and a specific throtel position we can determine the amount of oil that will flow. The motor doesn't care if it is at sea level, 10,000 ft or east coast or west coast. At idle the pump is set to lean on oil from the factory. Cant have smoke in the parking lot.....some green person may just get upset. Increase the oil at idle and it increases all the way through the sprectrum.
The dealer will not increase the oil flow unless you have a personal relationship with them. They will stick to the factory recommended settings. The government has decided how much oil we can burn. Get a four year warranty and don't worry about it or turn up the flow and ride.

 

[Super Sled]

I've always subscribed to the theory that more oil equals more protection. I found that initially my sled was running very lean, like 90:1. I have had to turn the screw up considerably to get it what I deem to be a "safe" consumption rate, at least 40:1. On mine now only a few threads show beyond the jam nut. If I foul plugs, so be it. This motor stock has reliability issues anyways, which extra oil will go a long ways towards helping. I also add a half of a quart of Polaris blue oil to each full tank. Just my $.02, I guess well see if in a few years these steps helped anything.

 

[Pro-8250]

2011 Pro RMK

I have not tried this yet, but before I do, this is what I am getting out of this.
Loosen jam nut (Counter clockwise) at least three turns.
Turn adjuster screw in (Clockwise) three turns.
Tighten jam nut (Clockwise) back down to secure adjuster screw.
Follow up by monitoring oil consumption. Now what would be the optimum oil ratio?
Now what do I do when my 2013 shows up!

 

[Super Sled]

I have not tried this yet, but before I do, this is what I am getting out of this.
Loosen jam nut (Counter clockwise) at least three turns.
Turn adjuster screw in (Clockwise) three turns.
Tighten jam nut (Clockwise) back down to secure adjuster screw.
Follow up by monitoring oil consumption. Now what would be the optimum oil ratio?
Now what do I do when my 2013 shows up!

Industry standard is 40:1 for general use, 32:1 for racing. I prefer my oil ration to be sub 40:1, using more oil and shooting for the mid 30's to 1 as a ratio.

 

[DLynn]

I run mine at 50:1. With improvements in materials used in modern motors, how they machined and in Oil, 40:1 is a bit to far the other way for me. I run Amsoil that is designed to run at 50:1.

Also keep in mind that as you add oil you lean out the fuel/oil mixture. You can get high Exhaust Gas Temps from adding to much oil. Watch the carb sleds. The injected sleds will compensate to some degree.

I will keep my 2011 and 2012 Polaris running at 50:1 until someone can show me I'm wrong on this issue. I could happen. Well.....it happens all the time but I hate to admit it!

 

[Steelman]

What is the factory set them at?

 

[Super Sled]

I run mine at 50:1. With improvements in materials used in modern motors, how they machined and in Oil, 40:1 is a bit to far the other way for me. I run Amsoil that is designed to run at 50:1.

Also keep in mind that as you add oil you lean out the fuel/oil mixture. You can get high Exhaust Gas Temps from adding to much oil. Watch the carb sleds. The injected sleds will compensate to some degree.

I will keep my 2011 and 2012 Polaris running at 50:1 until someone can show me I'm wrong on this issue. I could happen. Well.....it happens all the time but I hate to admit it!

Probably an excellent analysis here. I could be running too rich. I've only had a few rips though the back woods on the more rich settings I'm at now so where I have it now is not set permannently until I verify it still works well with more seat time.

 

[die hard poo]

I have ran my 12 with the adjustment screw flush withe the lock nut for 1300 miles (mtn miles not trail) this year and didn't have one issue with plugs. I ran the stock plugs the whole year. Dona's long as u let ur engine warm up to norm temp before getting on the throttle, u should be fine.