kgs

I had the same problem, it was my valves that got to tight. Adjusted both valves to 3 thousands and now starts right up and idols good.

I would think it should go a little faster but not much, I got a hisun 550 sector which has a different motor then the 500 but I can get it up to 45 before the limiter kicks in and has it cut out, that's so you don't blow your motor up.

While you got it apart, I would check the rear differential to make sure there isn't a spring behind that nut.

Yes I agree, those splines inside it are probably got some rust on them.

Yes that's normal, unless you want to blow the oil out of the oil cooler,then it would be 3 quarts. I personally don't do it, I add just 2 quarts.

I run high range most of the time, only use low range if I have to go up hills off road below 20 MPH.

Yes I keep mine greased on a regular basis, especially the drive shafts, I use mine to carry corn to feed deer and most of driving is on gravel road, just changed tires on it so should get another three years on them, mine is a 2019 and just add to adjust valves because they didn't have any lash or play in them. Now it starts and idols like new.

I got over 500 hours on mine and change oil probably about every 500 miles, when I change oil it isn't real dark so probably change it before it's really needed, but this time it cost me $34.00 for two quarts of oil. Used to get it for about 6 dollar's a quart.

I got the hisun sector 550 with out the oil tube extension, when I change oil I don't empty the lines on oil cooler. I got about 6000 miles on mine and add two quarts of oil when I change it and it is a little above the full line. Over filling can cause damage on motor, causing seal's to blow from pressure I would think. Here's the oil I use and has worked well for my hisun.

Your welcome, glad you got it figured out.

Number 8 9and 47 is all that goes in there.

Yes, but the splines inside that housing is probably stripped, the spring behind that nut doesn't belong in there, throw it away. Here's a diagram

Your welcome, if you look what you got sticking out, it's about a perfect match to mine gear you see what was sticking out. Should still be under warranty, hisun will give you the parts for free if you take it back where you bought it. But could take months before you get it back. Those two pieces isn't that expensive. But hisun knows some utvs went out that way. I bought mine in 2019 I would of thought that problem wouldn't happen on new models. I got 5900 miles on my now and it's running good, just had to adjust valves last week because they got tight.

That gear shouldn't be sticking out, when you put Greece in your driveshaft it will expand, but I got a hisun sector 550 that was put together wrong from factory. Mine had a spring behind the nut in the differential, only way to know is remove driveshaft and look at that gear, and make sure they didn't add a spring behind your nut, it will keep that gear from going all the way in. That's probably about the same amount of miles on mine before it happened to me, here's picture of bad parts, don't put the spring behind the nut if yours has one behind it.

Sounds good because I know what you mean, my 550 sector is the same way. Can't have a conversation while driving it with wife.