So I have searched this site for the information I need. I cant seem to find exactly what I need. I have a delemma. I have an aftermarket oil cable for my 2000 Mountain Max, and I had to replace the oil pump as well. My question is this. Where do I begin with for setting this. I know the play is supposed to be 22mm, but the "arm" on the pump has a longer throw than that. The 21mm I am supposed to set this at does not leave enough I either have it set up with tension at the bottom. and it will pull the arm all the way until it stops. Or I set it with slack at the bottom, but it does not pull up all the way until the pump lever stops. There are no WOT or other marks on this pump. I know I need to adjust this according to how much oil I burn, but I was just curious if anyone had an idea where to start with a setting. I will set it up conservative, but was wondering if someone has some experience. Thanks for any and all help.
oil pump adjustment question
- Thread starter maxco
- Start date
s10mike
Member
maybe the pump\cable manufacturer has a website you could check?or try to contact them by phone. i dont know but it might be worth a look.
Devilin AblueDress!
New member
From what I have read on other threads unfortunately when you go to some aftermarket parts your jumping into uncharted waters. Maybe if you posted what the brand was some one could chime in what they did with similar parts. Personally I would start of on the fat side. Better to have to much oil, smoke like a pig and foul plugs than run light on oil and burn it down. Would definately be keeping an eye on it and adjust to the sweet spot your looking for.
Devilin AblueDress!
New member
Afterthaught...Longer arm on pump, Is there multiple holes for cable or just the one?
Devilin AblueDress!
New member
Did you replace cable for a bar riser or was there a problem with the factory one? Reason I ask is for example aftermarket is say 6" longer than stock maybe compare the two side by side working from pump end back the other way, leaving the longer on the none bussiness end. At the least maybe comparing the differance in barrels/adjuster nuts might be able to sypher out a new number.
The machine came with it
It had a riser and extended cable when I bought it. So i do not have anything to compare it to. I had to replace the oil pump when I rebuilt the motor. One of the brass fittings came out. But I didn't look at where it set and where it was when I removed It.
It had a riser and extended cable when I bought it. So i do not have anything to compare it to. I had to replace the oil pump when I rebuilt the motor. One of the brass fittings came out. But I didn't look at where it set and where it was when I removed It.
jasburrito
New member
I am pretty sure as soon as the arm moves just a little its actually dumping full oil.( I took 1 apart) Leave slack in cable. I have the bracket for cable bent/ to even get less oil.(more slack) 
I wondered
I looked around more with a mirror, and there are molded pieces in the oil pump that are the stop points WOT, Min. but the play 22 mm is not a large enough spread to cover the whole span. The throttle lever does not even have the throw to pull a cable that whole amount. SO what Jas is saying is the pump is not really very variable, it goes from running to full bore quickly. Hmmmmm
I looked around more with a mirror, and there are molded pieces in the oil pump that are the stop points WOT, Min. but the play 22 mm is not a large enough spread to cover the whole span. The throttle lever does not even have the throw to pull a cable that whole amount. SO what Jas is saying is the pump is not really very variable, it goes from running to full bore quickly. Hmmmmm
Devilin AblueDress!
New member
I may be completely wrong thinking this but for some reason it seems to me like the pump delivers the most oil at lower and higher throttle positions, that the half throttle is the least amount of oil. Does any one else KNOW?
Simply changing the cable will not change the amount the throttle lever pulls the cable. As long as you put the same oil pump on with the same arm you should be OK. Just go to the throttle lever and measure the amount of cable play before stop (pull the cable housing back from throttle mount). This should be set to the spec you want (factory unless you want a different value). The oil pump ramps up in the latter part of the arm swing, not the first if it is working properly.
Thanks Ding, I understand about the throttle throw. The replacement pump is the same OEM Number. It has the same arm on it. From what you are saying if I hear correctly is I want to max out the Oil lever throw when I max out the throttle to the bar. The oil pump lever will be at it's full extension, and then set 21 mm gap to start back from that maximum point, and monitor oil consumption from this point foreward. I think it would need to be there for safety until I get a baseline on oil consumption. I searched around for that. 50:1 is a ballpark to be aiming for fuel oil ratio. Sound right?
Thanks for your time, and Merry Christmas
Thanks for your time, and Merry Christmas
Backwoods M Max
New member
I just went through something similar with my 02 mountain max when I changed bars and had to switch to a powermadd cable. The amount of travel you get from idle to full throttle is not enough to pull the pump up on the stop. To set up correctly with whatever cable you are using is a little like this.
when you pull apart the stock cable, there is 13mm of travel to get the cable end out of the adjuster, then you set it for the 22mm +/- 1 mm. the total travel of the pump is 35mm, and that is all from the throttle on the bar, like ding said changing the cable will not change the amount of travel. For the powermadd cable I put in, first the housing end that secures down at the pump has a nut on the threads, and the hex cable end barrel. I had to take the nut off, and let the barrel sit all the way down on the cable bracket to get enough slack for the pump to be on the stop at idle. That took a little trial and error to get it done. The reason for the nut is that the cable will also work on 02 and new Cat's and needs the adjustability.
To set the cable length, first I had to un crimp the cable adjuster. They put a crimp on the outside edge so you can't pull it out of the adjuster to measure travel. I pulled the crimp out, and measured from the face of the adjuster to the bottom of the socket for the cable housing to sit in. The cable sits in 10mm vs the 13mm of the stock cable. So, for my cable to be adjusted properly I need 25mm between the cable and adjuster. With the new cable I just barely get 25mm with the adjuster bottomed out, but once the cables stretch and break in I will be able to adjust it for the 25mm no problem.
So to recap: the travel of the oil pump by measurement on a stock cable is the depth of the adjuster socket (13mm) + 22mm of exposed cable = 35mm of pump travel. Work backwards by measuring the depth of the adjuster socket of your cable from 35 and you will get your new number that you need for your aftermarket cable.
when you pull apart the stock cable, there is 13mm of travel to get the cable end out of the adjuster, then you set it for the 22mm +/- 1 mm. the total travel of the pump is 35mm, and that is all from the throttle on the bar, like ding said changing the cable will not change the amount of travel. For the powermadd cable I put in, first the housing end that secures down at the pump has a nut on the threads, and the hex cable end barrel. I had to take the nut off, and let the barrel sit all the way down on the cable bracket to get enough slack for the pump to be on the stop at idle. That took a little trial and error to get it done. The reason for the nut is that the cable will also work on 02 and new Cat's and needs the adjustability.
To set the cable length, first I had to un crimp the cable adjuster. They put a crimp on the outside edge so you can't pull it out of the adjuster to measure travel. I pulled the crimp out, and measured from the face of the adjuster to the bottom of the socket for the cable housing to sit in. The cable sits in 10mm vs the 13mm of the stock cable. So, for my cable to be adjusted properly I need 25mm between the cable and adjuster. With the new cable I just barely get 25mm with the adjuster bottomed out, but once the cables stretch and break in I will be able to adjust it for the 25mm no problem.
So to recap: the travel of the oil pump by measurement on a stock cable is the depth of the adjuster socket (13mm) + 22mm of exposed cable = 35mm of pump travel. Work backwards by measuring the depth of the adjuster socket of your cable from 35 and you will get your new number that you need for your aftermarket cable.