I hate to bring this up but it drives me nuts that nobody ever considers this
The Polaris machine with the exception of the old Predator does not have a wet clutch system. ATV/Motorcycle oils are designed to accommodate the clutch when they share the same oil with the engine so the friction modifiers are LEFT OUT. This is so enough friction can occur to operate the clutch without slippage. In short..the oil is designed to allow more friction to accommodate the wet clutch and lubricate the engine too. This is why you can’t pour automotive oil with all the friction modifiers in it into a jap motorcycle or 400ex Honda for example. The oil will be too " slick" and will cause the clutch to slip. But that sacrifice made for the clutch applies to all the other moving parts. It’s actually a sacrifice made in order to be able to lube the engine AND let the clutch grab enough to work Follow me??
Now to my point. Why on earth would Polaris design it’s oil without the friction modifier additives when their machines don’t have wet clutch??? Do a Amsoil search and it comes up recommendation 5w-50 ATV oil for Sportsman 570 and clearly states it has no friction modifiers .
The friction modifiers ARE A GOOD THING!! Since we have no wet clutch we can use oil that has the additives that make it as "slick" and lubricious as possible! So it evades me why people keep pouring in this oil which is engineered to allow more friction into engines that share fluids with its clutch system. Harley Davidson big twins are the same way. I quit using motorcycle oil and switched to a high quality racing oil for cars and it ran cooler and all the top end ticking Harley’s are known for disappeared. Why?? Because I added a oil that contained friction modifiers and it lubed my top end much better. ( Harley guys…it was Valvoline VR1 Synthetic Racing Oil).
Just a thinker for y’all. Take it or leave it. But a ATV/Motorcycle oil is designed to allow more friction for a reason, and not having that reason (clutch) to worry about we should be putting in the slickest lubricant we possibly can. ATV-MC wet clutch approved oil is a meet in the middle sacrifice between lubricating the engine but not so damn good that it makes the clutch slip.
sportsman 570 hear complaints about heat. I’m ready to change break in oil and have chosen to use Amsoil Signature Series 5w-50 instead of Amsoil ATV 5w-50 for reasons above. Will report back on any internal engine noise reduction or heat reduction that occurs.
Btw…the Signature series 5w-50 was designed for the high HP Ford Mustang engine that requires 5-50 oil. It has all the goodies in it to make the oil as slick as possible. its the only 5-50 oil I could find that didn’t have the friction modifiers left out. Can’t wait to see the results
AND NO…I’m not saying your Polaris wet clutch approved or other MC oil is going to grenade your engine. Im only saying we can reap the advantage of not having a wet clutch system and use oils fully focused on eliminating as much friction between moving parts as possible.
Brand new to the forums, but I’ve had a lingering problem with my atv.
Basically, I got this quad off a friend when he blew the motor on it. I bought a used motor and swapped it right in. I did a leak down test and adjusted the valves. Don’t know the hours on it. Figured it would be a cool project.
Got it running. It idles great, but would bog down and almost die when I open up the throttle. Does ok when you lightly push in the throttle, but when you slam it down for power, it Boggs out, usually dies if I leave it wide open.
Here’s what I’ve tried;
Cleaned the carburetor. Took it completely apart and soaked everything in carb cleaner bucket for about 10 hours (while I was at work) then put it back together, and it idled better, but had the same problem.
Then I bought a brand new carburetor for it. Just wanted to cut out the tinkering and was frustrated. Installed it, and still have the same problem. Starts right up. Idles great, let it get to operating temperature, then push the throttle down, its spits and sputters till it dies!!
I’m really stuck here guys. I’ve come to the forums before and found some great tips without even posting..I’m stumped! Any help would be appreciated.
When I saw the dust on the intake, and saw that the donut was dry, I assumed that dust either got past the donut, which is not pushed up against the airbox very well, or got through the donut which was not lubed.
But looking at this photo again, I see some dust on the air filter holder, between the screen and the donut. It seems to me that any dust that came in through or past the donut would have then proceeded on into the engine, and therefore would NOT have gone against the air flow and settled on the inside of the holder.
Therefore I wonder if the stock filter, with the stock lube on it, wasn’t sealed up against the holder or didn’t stop the dust from coming through it.
In all of my rides since then, I have been in front and so there has not been any opportunity to find out if it is still letting dust in.
When I saw the dust on the intake, and saw that the donut was dry, I assumed that dust either got past the donut, which is not pushed up against the airbox very well, or got through the donut which was not lubed.
But looking at this photo again, I see some dust on the air filter holder, between the screen and the donut. It seems to me that any dust that came in through or past the donut would have then proceeded on into the engine, and therefore would NOT have gone against the air flow and settled on the inside of the holder.
Therefore I wonder if the stock filter, with the stock lube on it, wasn’t sealed up against the holder or didn’t stop the dust from coming through it.
In all of my rides since then, I have been in front and so there has not been any opportunity to find out if it is still letting dust in.
I’m new to the forum hope this is the right place to post this. I kept having problems with my float sticking and other carb issues so I broke down and bought a new carb and went ahead and adjusted my valves and put a new plug but now it will crank perfect and idle perfect but as soon as I touch the throttle it dies out. Now I’ve tried adjusting the air/fuel screw but still the same thing. Any ideas?
Hi, I’m replacing the stock tires and wheels on my 1993 Fourtrax trx300fw 4×4
The stock tires and wheels are:
Front: 23x8x11
Rear: 24x10x11
I found a used set of tires and wheels off a 2013 Honda Foreman 500
Front: 25x8x12
Rear: 25x10x12
I don’t want to do anything to harm the machine. Should I stay with the stock size? Is this replacement size ok to change the sizes? Is the bolt pattern the same?
There are two 12v posts under the front cover that I had used for my winch setup. Seems like a good place to add my battery charger harness, rather than directly to the battery.
Just bought a 2016 sportsman 570 and pick it up Friday. Looking forward to some great information and ideas from y’all! I’m sure there are some "must haves" that I will need to get for it first lol
Just bought a 2016 sportsman 570 and pick it up Friday. Looking forward to some great information and ideas from y’all! I’m sure there are some "must haves" that I will need to get for it first lol
Hi all, new to the forum here, looks like a good crowd. I tried the search function, but didnt quite find what I am looking for. Hoping maybe you can help me…
I am looking to buy a new grizzly and am wondering if any owners of these 2 models can chime in and let me know how their machines have been after putting them through the paces. I am intrigued by the 2015 since it was the last of its generation and seems they should have worked out the kinks from the previous models. The 2016 intrigues me because it is supposed to have a plush ride, slightly wider stance and a slight boost in overall power.
I’m not looking to put this machine through the mud or take it swimming. More of a hunting/fishing/back country camping rig, I’m looking for a machine to get me there and back every time.
