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By Greg Kilgore
I'm 99.9% sure head gasket is blown.
Don't have coolant in oil. That a good thing. But think coolant is getting in combustion chamber.Â
I did compression test.
Got 120psi walked away. Came back to 105psi 15 minutes later.
How hard is it to replace?
https://youtu.be/N31mOtOPuKI?si=nSnuF4-weRU2T10t
Advise?
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By Brent C
Hi all, I own two Axis UTV's. Last year I purchased a 2022 Axis 500. I had a mechanical issue with the shifting forks after only 50 miles. I contacted Axis/Hisun warranty dept. That were very helpful and willing to send out a representative to see if it was a warranty issue that fell under coverage. Since I live in an area that does not have authorized repair facility within 300 miles. A really nice guy drove all the way from West Virginia which was 4 hours away. He determined that the console would not stay seated in position and while driving it, the console would jump forward and knock it into the wrong gear causing the shift forks to become bent. It was then picked up a few weeks latter to be repaired in Richmond, Virginia. It should arrive home soon.
Now to my question. After the 2022 Axis 500 was taken for repairs, I bought the 2024 550 Axis. I bought the first one to take my son who is disabled from an extremely rare disorder that requires daily care to get out of the house. There are two things that give him joy, music and going for rides. That is why I purchased the first one, However because it had bucket seats and the engine was between the two and was too loud even though I deaden the sound and put a quiet muffler on it.Â
I then decided to purchase the Axis 550 for the great updated features and the bench seat, I will be buying the complete enclosure ad on's offered by Hisun. Since it does not come with a heater (Axis 750 does) I was wondering if anyone knows what heater is part of the 750 edition. There was a photo that showed a Firestorm brand, however I can not find what variation it is. If anyone knows what a Inferno heater would be correct for the Axis 550. I would like to install it this Winter to take Justin riding on the farm. Any help would be greatly appreciated.  BrentÂ
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By LauraLB
Thanks for the add. I'm looking for ideas for a hard cab enclosure. I sure don't like the soft sides and zippered window.
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By hisun junk
As I tried to do a conversion with the Yamaha 660 motor, I realized the 660 was never fuel injected so it would not work for the fuel injected hisun motor swap. But the good thing is the hisun 750 motor is a clone of the 660 Yamaha but with the components for the fuel injection (cam/crank position sensor). So that left me with a new rebuilt Yamaha 660 and still a broke 750 hisun motor. I took apart 750 think the timing chain had broke from all that I've heard about these motors. The chain was not broke, but just off cam and crank gears! The chain tensioner was at fault! I've ordered Yamaha 660 replacement parts, chain, two exhaust valves (which got bent when chain came off while motor was spinning) and seals. The piston has 2 little nicks where it had hit valves but no damage otherwise. The head is being redone at the machine shop and I'll be putting it back together in the next couple of weeks. Also I finally tracked down a Service Manual with all the info on the 550/750 Challenger.
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By A P
Hi
I have a 2022 hisun sector eps 550. 30amp fuse is blown for eps. Checked the motor and it’s fine. Opened up the controller and found a bad diode. Dealer wanted 500$ for the controller. Just posting this in case it helps someone. I couldn’t read numbers from the old one so just took a guess and replaced it with a 100v 3amp diode.Â
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