On my 1994 Polaris SL750 with 130psi I switched out all of the stock grey lines with gates, installed the triple outlet fuel pump mod, primer bulb on fuel inlet, new oem rebuild kit for carbs, all gaskets, replaced the burnt out reeds with Boyseen american made ones and installed spacers to prevent premature reed failure at WOT (standard addition with earlier models). Along with later rebuilding the starter and rebuilding the jet pump assembly. It lasted 180hrs on the stock setup but I would consider the above to avoid problems on the water
I have a SLT 780 luckily these came with the triple outlet fuel pumps! Lol that's actually where the replacement one you're talking about putting on yours comes from. Is the SLT 780. Second, the oil injection pumps in these are actually very dependable! It's the lines that go to the pump thay end up going and not getting oil to the motor. People need to change them since these machines are all 20+ years old now. But most people don't change them then get surprised when engine blows. Usually a line not the oil pump. Also it will use way more oil when using. These pumps have a actuator on them that saves oil when at lower rpm it actually mixes less with the gas. But premix is burning the same amount of oil all the time. EVERYONE REPLACE YOUR FUEL LINES AND OIL FEED LINES, GREASE YOUR FITTING ON THE BEARING ON DRIVESHAFT!
The genius is they are variable delivery. So you burn a LOT less oil if you keep the stock arrangement. I love pulling into the gas docks with a little smoke boiling out. "Hey man...your ski is smoking!" Yeah...I hope so. I add a little Benol to the synth...just to hook the old guys.
650s were all kinds of fuckey IIRC. The cooling in particular. I have rebuilt (6) 96 SLT780s...did wreck a hull...but the engines are all still going strong.
I just cut the wires to the oil alarm under the handle bar pad and Bam no more problems. Because I did the zip tie thing and it came loses twice so I just cut the Alarm wires...
The stock oil injection on these skis almost never fail I still have the stock oil injection on my 96 sl 750 just make sure you're oil lines are in good shape and like u mentioned do the triple outlet fuel pump mod to prevent a lean condition
@that250exc Sorry to hear did u determine the cause of the engine failure? From my experience with polaris jet skis a lean condition is what kills the engines on these machines
My dad just passed away and left me his ski a Polaris SL780 1996 and I would love to keep it around for as long as I can but I have not a clue what you are talking about any suggestions on maybe a CZcams video step by step on how to take the oil thing out and setting up the fuel pump thingy so I can keep her forever I know he would want that for me.
The 780s actually come with the triple outlet fuel pump, so your good there and for the oil pump I would just recommend checking the oil lines and make sure they are not dried out or cracked
The fuel pump you are correct on however the Mikuni oil pump is very dependable and the number one thing that blows these two stroke engines up on most if not all jet skis is pressure leaks on your fuel system that is the number one thing that leans out the back cylinders
I was given a 99’ sltx1050 thete as put away running do you think I should do a oil pump delete or just replace it?I already mix up the gas for my cr so that doesn’t bother me.
@@jordanrivera4244 never delete the oil pumps they are made by Mikuni they are very good it is the oil lines that fell and you better do a pressure check and make sure your carburetors are all dialed in or you will create a lien condition and blow up the ski because you were in a hurry to ride it
We bought ours for 900 from a friend 6 years ago. We literally haven't done anything with ours besides fill it with polaris oil and give it gas literally nothing else.
Is there a need for a plate to cover where the oil pump goesonce it's gone? Is a 700 2 cylinder need the fuel to each carb as well? Great vid, keep it up!!
They do make oil pump block off kits but I just decided to block off the outlets on the oil pump and just use the pump it’s self as a block off. And I’m not 100% sure about the Polaris twins fuel pump, I would guess that they are ok being that the fuel doesn’t have to travel as far as a triple but don’t quote me on it. Hope this helps.
I want to mix Gas because as an Old school Motocross/Snocross Guy It's Nothing to mix up ten gallons in ten seconds... if you raced two Stroke Anything you know it's the only way to go....
Dumbest thing I ever heard. The pumps never fail. Skis sleds atv all Polaris 2 strokes. Never seen one fail ! Who wants to mix gas. Don’t listen to this BS.
Fuji engine polaris are great! I have an SLT 780 and she's a freaking beaut. I dunno about the 650 though I heard 750s are good too. Sucks the 650 and possibly the 750 don't have the triplet outlet fuel pump like the 780 does.
Hey man, Just got my first jet ski 92 650. Wondering how do I flush this/hook up a hose everyone is telling me to? Never owned any PWC and this old 650 I’m not finding a whole lot of info lol
We did what you said on your video with my 1994 Polaris SLT 750 but the new fuel pump (2nd new fuel pump) doesn’t feed fuel like it should. We thought 1st one was bad but obviously it wasn’t. The fuel just drips out. Can you help?
Hey I got a 95 it's taking in water to the crank. Natural crack from abuse in lower end of engine to allow water to escape... how do I keep water from going into the engine it still runs nothing jb weld can't fix hopefully.. I just got the blown jug replaced and new gaskets except exhaust gasket... can u help?
@@isaacfinneyoutdoors411 the pump is a basic design used for many years in sled and watercraft...it is not known to fail on polaris...more than likely broke line or no oil in the jug ...most people blame all engine failures on oil pump...99 percent are lack of fuel from lack of maintenance and dirty plugged carbs. Ive never touched a polaris oil pump in the dozens ive worked on and owned
@@isaacfinneyoutdoors411 well technically premix isn't mixed correctly...and is easily forgotten or poorly mixed....the oil pump is progressive dependent on throttle...more effective and more efficient....you keep your inconvenience of having to premix.....my skis are never going premix...and I can fill up on the water. Wait till you forget...or figure you can dump oil in on the water and add fuel lol....much higher chance someone forgets premix than the pump.
@@isaacfinneyoutdoors411 ok because I have same Jetski and the middle piston just burnt has a whole right In the middle of it going to get the 3 way fuel pump and do a carb rebuild hopefully that helps been running fine then that happened after riding about 20 minutes
I can not for the life of me get the gear rod out of the oil pump inlet. I tried for over an hour with several different kinds of pliers and whatnot. Any advice on how to get it out without having to pull the whole da*$# motor?
On my 1994 Polaris SL750 with 130psi I switched out all of the stock grey lines with gates, installed the triple outlet fuel pump mod, primer bulb on fuel inlet, new oem rebuild kit for carbs, all gaskets, replaced the burnt out reeds with Boyseen american made ones and installed spacers to prevent premature reed failure at WOT (standard addition with earlier models). Along with later rebuilding the starter and rebuilding the jet pump assembly. It lasted 180hrs on the stock setup but I would consider the above to avoid problems on the water
I just bought one of these. Thank you for this video. I'm so glad I found it.
How fast is it I might buy one too lol
Great advice
I have a SLT 780 luckily these came with the triple outlet fuel pumps! Lol that's actually where the replacement one you're talking about putting on yours comes from. Is the SLT 780.
Second, the oil injection pumps in these are actually very dependable! It's the lines that go to the pump thay end up going and not getting oil to the motor. People need to change them since these machines are all 20+ years old now. But most people don't change them then get surprised when engine blows. Usually a line not the oil pump. Also it will use way more oil when using. These pumps have a actuator on them that saves oil when at lower rpm it actually mixes less with the gas. But premix is burning the same amount of oil all the time. EVERYONE REPLACE YOUR FUEL LINES AND OIL FEED LINES, GREASE YOUR FITTING ON THE BEARING ON DRIVESHAFT!
Great info, thanks!!
Where did you purchase the fuel lines from, the dealer or aftermarket supplier? Thanks
Thanks for the info. I think the fuel lines are 1/4" but what size are the oil lines? Also if there are any particular type of line to use? Thanks
Wie schmier ich die antribswelle ?
The genius is they are variable delivery. So you burn a LOT less oil if you keep the stock arrangement.
I love pulling into the gas docks with a little smoke boiling out.
"Hey man...your ski is smoking!"
Yeah...I hope so.
I add a little Benol to the synth...just to hook the old guys.
Thanks for sharing subscribed
650s were all kinds of fuckey IIRC. The cooling in particular.
I have rebuilt (6) 96 SLT780s...did wreck a hull...but the engines are all still going strong.
I just cut the wires to the oil alarm under the handle bar pad and Bam no more problems. Because I did the zip tie thing and it came loses twice so I just cut the Alarm wires...
Awesome
The stock oil injection on these skis almost never fail I still have the stock oil injection on my 96 sl 750 just make sure you're oil lines are in good shape and like u mentioned do the triple outlet fuel pump mod to prevent a lean condition
Mine blew on my sltx 1050 after 9 hours total ride time, almost blew it up
@that250exc Sorry to hear did u determine the cause of the engine failure? From my experience with polaris jet skis a lean condition is what kills the engines on these machines
do you recommend a certain fuel pump?
Do you have any pictures of how you routed the fuel lines from the pump to the carbs? And where you mounted the pump?
I have the 1050 sltx and it has duel fuel pumps. I got gas in the lines but not to the carbs
that 1050 running good is probably a monster
My dad just passed away and left me his ski a Polaris SL780 1996 and I would love to keep it around for as long as I can but I have not a clue what you are talking about any suggestions on maybe a CZcams video step by step on how to take the oil thing out and setting up the fuel pump thingy so I can keep her forever I know he would want that for me.
The 780s actually come with the triple outlet fuel pump, so your good there and for the oil pump I would just recommend checking the oil lines and make sure they are not dried out or cracked
The fuel pump you are correct on however the Mikuni oil pump is very dependable and the number one thing that blows these two stroke engines up on most if not all jet skis is pressure leaks on your fuel system that is the number one thing that leans out the back cylinders
I was given a 99’ sltx1050 thete as put away running do you think I should do a oil pump delete or just replace it?I already mix up the gas for my cr so that doesn’t bother me.
@@jordanrivera4244 never delete the oil pumps they are made by Mikuni they are very good it is the oil lines that fell and you better do a pressure check and make sure your carburetors are all dialed in or you will create a lien condition and blow up the ski because you were in a hurry to ride it
@@shannonwilliams601 okay thanks , I’ve started lubing everything the manuals said so far. I’ll make sure to do that next before I try n start it.
Can't lean out the back cylinder if its mixed in the fuel
@@marshallvinter9090 you couldn't be more wrong but whatever good luck with it
We bought ours for 900 from a friend 6 years ago. We literally haven't done anything with ours besides fill it with polaris oil and give it gas literally nothing else.
Is there a need for a plate to cover where the oil pump goesonce it's gone?
Is a 700 2 cylinder need the fuel to each carb as well?
Great vid, keep it up!!
They do make oil pump block off kits but I just decided to block off the outlets on the oil pump and just use the pump it’s self as a block off. And I’m not 100% sure about the Polaris twins fuel pump, I would guess that they are ok being that the fuel doesn’t have to travel as far as a triple but don’t quote me on it. Hope this helps.
The 700 dual doesn’t have the lean problem. Just make sure your oil lines are in good shape, and that the oil pump is properly adjusted
The oil injection pump is reliable. The problem is that the lines go bad because people never do any maintenance, line breaks, motor goes boom
Can you link the tri fuel pump
What is the fuel pump you buy
Im actually going to sell mine with a newer trailer. Everything is new on it so im done with it before something is to go wrong.
I have a 2000 Polaris 700 The red motor do you know where I can get you for two Stroke dual fuel pump, and the oil pump cover for deleting
I don’t know a whole lot about the twins
You wouldn't happen to have a video of changing out a starter on the slt780 would you
I don’t, I’ve looked also and they r hard to find. Not looking forward to the day that I need to replace one lol!
Thanks
Working on Polaris sleds and jet skis for years. Never seen an oil pump fail ! Who wants to mix gas ? I will never do this.
I did it purely for simplicity, less mess of lines. Also never have to worry about lack of lubrication if you're running too rich.
I want to mix Gas because as an Old school Motocross/Snocross Guy It's Nothing to mix up ten gallons in ten seconds... if you raced two Stroke Anything you know it's the only way to go....
Dumbest thing I ever heard. The pumps never fail. Skis sleds atv all Polaris 2 strokes.
Never seen one fail ! Who wants to mix gas. Don’t listen to this BS.
I had. 95 slt 750……Learned a lot from it. Also was a gigantic turd
Fuji engine polaris are great! I have an SLT 780 and she's a freaking beaut. I dunno about the 650 though
I heard 750s are good too. Sucks the 650 and possibly the 750 don't have the triplet outlet fuel pump like the 780 does.
Can you tell or show how you actually ran the fuel lines to the rail rail itself?
Yes there is a really good video explaining how to set it up I will find it quick
czcams.com/video/3UIKBS20DhM/video.html
Hey man, Just got my first jet ski 92 650. Wondering how do I flush this/hook up a hose everyone is telling me to? Never owned any PWC and this old 650 I’m not finding a whole lot of info lol
I have never personally flushed mine either, I’ve heard that you connect it to the end of the water rail at the top of the heads
Get a repair manual book for 92-97 polaris
How does a guy do the aftermarket fuel pump I wanna do mine but have no idea how.
czcams.com/video/3UIKBS20DhM/video.html
Here’s how you route the fuel lines from the triple outlet fuel pump
Do u have a link for the 3 output fuel pump?
www.amazon.com/Distributing-DF52-92-Mikuni-Triple-Fuel/dp/B00336EBGW/ref=mp_s_a_1_3?dchild=1&keywords=mikuni+triple+fuel+pump&qid=1628211018&sprefix=mikuni+tr&sr=8-3
We did what you said on your video with my 1994 Polaris SLT 750 but the new fuel pump (2nd new fuel pump) doesn’t feed fuel like it should. We thought 1st one was bad but obviously it wasn’t. The fuel just drips out. Can you help?
Do you have the output nipples on the carbs plugged correctly? You have to plug the correct ones because they are no longer hooked up in a series
are both ends of the vacuum lines for the fuel pump tight?
Hey I got a 95 it's taking in water to the crank. Natural crack from abuse
in lower end of engine to allow water to escape... how do I keep water from going into the engine it still runs nothing jb weld can't fix hopefully.. I just got the blown jug replaced and new gaskets except exhaust gasket... can u help?
1995 sl 650
The crankcase has water in it?
Have a polaris hurricane 700 that's major backfiring...any thoughts? Thanks
Possibly carbs, clean them/rebuild them. If not that I’m not sure.. not too familiar with the twins
@@isaacfinneyoutdoors411 wow! Thanks for timely response👍 I LOVE doing carbs on jetskis🤣 I shared your vid w 2 others😎👍
@@markcooper9033 awesome! 👍
Where did you get your fuel pump that you put in?
I found mine on Amazon
funny never premixed any of the 14 polaris ive owned....and my 1050 is pushing 150hp and ive never blown an engine
Wow, I personally know someone that had a sl 750 blow up from oil pump failure, it might have to do with the oil you run?
@@isaacfinneyoutdoors411 the pump is a basic design used for many years in sled and watercraft...it is not known to fail on polaris...more than likely broke line or no oil in the jug ...most people blame all engine failures on oil pump...99 percent are lack of fuel from lack of maintenance and dirty plugged carbs. Ive never touched a polaris oil pump in the dozens ive worked on and owned
@@gangsterboat69 I just like the peace of mind knowing it’s mixed correctly
@@isaacfinneyoutdoors411 well technically premix isn't mixed correctly...and is easily forgotten or poorly mixed....the oil pump is progressive dependent on throttle...more effective and more efficient....you keep your inconvenience of having to premix.....my skis are never going premix...and I can fill up on the water. Wait till you forget...or figure you can dump oil in on the water and add fuel lol....much higher chance someone forgets premix than the pump.
@@gangsterboat69 Okay Mr know it all 🙄
Where do u find the fuel pumps?
I found mine on Amazon
Which one is the pto cylinder the middle one?
No, the rear cylinder. Farthest from the mag side.
@@isaacfinneyoutdoors411 ok because I have same Jetski and the middle piston just burnt has a whole right In the middle of it going to get the 3 way fuel pump and do a carb rebuild hopefully that helps been running fine then that happened after riding about 20 minutes
@@Karen-cb8uu yea carbs could have gotten dirty and leaned out that center cylinder
H
Atta boi informing them idiots but now how will you get cheap ones cause people don’t know how to do that
Uh oh
I can not for the life of me get the gear rod out of the oil pump inlet. I tried for over an hour with several different kinds of pliers and whatnot. Any advice on how to get it out without having to pull the whole da*$# motor?