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Since I've seen some questions on this I took some pictures and will provide instructions on a valve adjustment for the UT400. This should be the same for the 550's and other various Coleman/Hisun single cylinder models with the cylinder slanted aft. I have seen several people ask of it is really necessary, and read several reports of valves being out of adjustment from the factory. My valves were .004" intake, and .010" exhaust with about 5 hrs on the machine. I've seen different numbers thrown around for factory spec, but I decided to go with 0.005". This is called valve lash. What is is is a gap between the rocker arm and the valve then the camshaft isnt opening the valve. Why does it matter? If it's too large the valve doesn't open all the way, if it's too small the valve dosent close. This can cause valve damage (overheating) as well as loss of engine power (burned fuel is going out exhaust rather than pushing the piston dow). Tools required : 5MM Allen wrench, 10MM box wrench, needle nose pliers, flat feeler gauge set, rags First you need to remove the fan cover on the passenger side. There is a cooling vent hose on the back side, remove the hose clamp and slide it off. From there there are 4x 10mm bolts holding the cover. The forward ones can be accessed from under the seat. Next remove the spark plug from the drivers side. Carefully wiggle the spark plug wire off. Grip it as low as possible and give it a little twisting motion as you pull it off to help free it. Its a tight fit for a socket, but there is a sheet metal wrench in the toolkit that fits it. Unscrew the plug and set it aside. This allows you to spin the motor over freely with no compression to fight. When you reassemble this is a good opportunity to switch to an NGK iridium plug for better performance/less fouling DR8EIX) Next you need to remove the intake and exhaust valve covers. The intake us the forward one. There are 3x 5MM Allen screws to remove. The Exhaust is the rear with 2x 5MM Allen bolts. Both covers have O-Rings instead of gaskets and are reusable. When you remove the rear be careful and use your rags as there will be oil that drips out. Next up we need to spin the motor over to top dead center. Grab each rocker arm and give em a little wiggle up and down. Spin the engine over by grabbing the fan with your other hand. Spin the engine over until both rockers have some wiggle and are loose. Once both rockers are loose slide the feeler gauge in like shown above. Try different feelers as needed to determine your starting spec. You should feel some drag but still be able to move the feeler without too much force. If you need to adjust, use the 10MM wrench to slightly loosen the locknut, then with the correct feeler gauge in place, tighten the top square nut while wiggling the feeler in and out. Once you have it right you need to tighten the 10mm lock nut without moving the square head bolt. Once the lock nut is tight recheck the clearance. That's it, button everything back up and make sure you have it all reassembled before running it again. If you find this helpful give me a thumbs up or comment. If you have any questions or need more help let me know. If there's interest maybe I'll do some more of these

Since it's designed to go thru mud and water, I can't see how you can hurt it .Just don't spray into the air filter box.I pressure was my UTV and Atvs after each use to prevent corrosion

Hi Space Ghost and welcome. I'm one of the originals here but don't post much these days. After reading your posts I feel obliged to reach out to you. Firstly thanks for your service and the sacrifices you've made. We are a Powersports Dealer and can and will give you at least a 10% discount on parts and accessories you may need. Contact other Powersports dealers and they will help you too. You deserve to get the best deals going. Contact me at any time and just mention UTV Board. Thanks, Mike.

My Service dog Bärli on the left with his battle buddy Louie on the right.

Welcome Space Ghost, I too just upgraded from a quad ATV to a full cab UTV. For many of the same reasons as you. My service-connected disabilities make it very difficult to ride and be out in the elements anymore. The new UTV is making riding still possible. Thank you for your service!

Not sure if this would be an option for your 550: I'm using a 72" KFI plow on my Hisun Sector 750 - works well. Driveway is 350'+ x 12'. One pass down the middle and then one on either side. (photo is UTV with plow at the dealer's - was delivered that way). Note - need to manually adjust plow angle.

if i cannot see, feel, operate a piece of equipment, i am not interested..............

I was reading through an old thread about the woes of the risky ownership of Hisun UTVs. Well, OK. So we all own some problematic machines. But I’ll say this. I’ve owned bicycles, automobiles, snowmobiles, PWCs, boats motorcycles, class 8 trucks, airplanes and a crapload of heavy equipment. Nothing I’ve owned and operated hasn’t broken or needed maintenance. The difference between all those prior items and my Hisun, I feel, is the support (or lack of)from the factory and dealership. That’s where this and other forums come in. We’re all we have! Well, us and YouTube. Oddly enough though, with help I’ve received from YouTube and you guys,I’m actually starting to enjoy crawling through this machine, and screw the factory/dealer. I’ll make this vehicle what they didn’t. And have fun doing it.

I thank you PB

Did you take a look at the parts diagram?...https://alpha-sports.com/massimo_parts.htm?q=massimo-parts I suppose there may be a unique situation that only a 1 off bolt or screw may work, but everything I see on the parts diagrams are standard metric bolts. They are after all trying to minimize costs, and creating unique hardware hardly seems productive.

Hisun Sector E1 Discovery to Lithium Conversion. So I went ahead and did the conversion using the LiTime 4-pack 48V 30Ah GC2 which I ordered on Amazon Prime Day for $1840 ($460/battery). Also bought the LiTime 58.4V 18A ($200) Lithium Battery Charge and “Superboni” 7pc set #2 Awg HD Golf Cart Battery Club Car 48 Wire Kit ($56). I utilized the LiTime charger to activate the Bluetooth and charge each battery to full. Then, connected them all in parallel and allowed them to balance both internal cells of each battery and between batteries which took several hours. Removed all the old Discovery batteries which as stated before requires the removal of the front panel under the seating and is much easier if you disconnect the piston allowing the rear bed to open fully. Placed the 4 new batteries in the most interior positions and had to utilize the braces from the exterior positions because the H-brace from the interior positions overlapped the battery terminals on the new batteries. Be sure to position the batteries so the original connections can reach which for me was positioning the negative terminal on both posterior batteries towards the rear. I connected the batteries in parallel for balanced but not perfectly balanced charging/discharge because it would require connections crossing over the controller sitting between the left and right battery positions. Basically, the connections followed a “U” pattern around the controller. I used this webpage to help wire the batteries: https://www.solar-electric.com/lib/wind-sun/Iota_balanced_charging.pdf I reprogrammed the Delta-Q charger to profile #233 charging to 56V as previously mentioned by Jaime since I read it is not recommended to utilize the max charge voltage which would have been profile #386 charging to 58.4V. https://support.delta-q.com/hc/en-us/articles/14188856858893-Choosing-an-Algorithm-for-a-Lithium-Battery How to upload new profiles: https://support.delta-q.com/hc/en-us/articles/360015622531-IC-Series-How-to-reprogram-reflash-or-upgrade-software-and-algorithms-via-USB How to change charger profile: https://support.delta-q.com/hc/en-us/articles/360016475772-Changing-Algorithms-on-IC-Series-Chargers Download profiles here: https://support.delta-q.com/hc/en-us/articles/360015622311-Download-Algorithms-for-IC-Series-Chargers Put everything back together and took it for a test run. Everything appeared to function properly and certainly has more power. I am using the battery Bluetooth with the LiTime App to monitor the batteries individually and the App has a feature that allows you to monitor all 4 batteries as a system. I was able to see that the batteries did charge on the Delta Q charger as well. It’s been less than a week, so I will update if anything changes, but overall for less than $2100 + tax/shipping(free since I have Amazon Prime), I’m very happy with the conversion. Hope this helps anyone else thinking of making the leap to Lithium.

there was a time I could say my HAIR would protect my head... not any more

Stay away from Chinese UTVs.Service is non existant.They don't honor warranty. I personally like HONDA for their durability .

In order to connect with the ECU we need two cables. The first is a USB ODBII cable. HUD ECU Hacker’s documentation has a lot of different confusing options, but here’s what I went with and managed to get working, the cable is called “VAG KKL” it is a USB to ODB2 cable. It is available from a variety of sources for $10-15. The second thing we need is a “6 pin delphi to ODB2” adapter cable. It is also available for a similar price. In my case I ordered both from ebay, but there are other sources. Once we have our cable in hand we need to find the plug it in on your machine. My personal rig is a Coleman UT400, but the wire location should be similar for all Hisuns. My cable was located under the middle of the seat area. Just inboard of the battery, where the main wire harness split loom runs. The cable is a 6 pin (3x2) with a dust cap. Remove the dust cap and plug in the 6-pin end of the Delphi adapter cable. Note: When I was done, I left the 6-pin adapter connected, and zip tied it so it now runs to in front of the battery for easier access in the future. Next download and install HUD ECU HACKER DOWNLOAD Open HUD ECU Hacker on your PC It should prompt you to choose a driver to install. This particular cable uses the “CH340” driver (First choice on the menu) click to install, once installed hit the X in the corner to go back to the main page Once the driver is installed plug in the USB Cable, and plug the ODB2 end into the 6 pin adapter. The red led on the adapter should light up indicating it has power. Drop down and pick a com port on the main screen, it should show the VAG KKL adapter as a com port. Click connect on the main menu. It will pop up a bunch of fast scrolling text indicating it is connecting. Once connected you can click through the various tabs to see different data sets. The main menu also has the option to show fault codes, clear fault codes, reset the EPROM back to factory. The other function that may be helpful is recording a log file. You can record a log while operating the unit, and come back later and replay it to try to better diagnose what is happening. Within the various pages you will see the reading from each sensor. Sometimes a sensor reading will be off enough to cause running issues, but not enough for the ECU to realize its an issue. For example if the engine thinks it’s really warm, but its actually cold, it may not inject enough fuel to start. There are also more advanced functions, like adjusting fuel mapping, but that is beyond the scope of this tutorial. Full HUD ECU Hacker Documentation (Very technical reading) If you find this helpful give me a comment below or a thumbs up.

good point, perfect is hard to find in anything, especially UTV's.

I had 12V on the one post, but nothing happened when I turned the key to start it. It ended up being a loose connection going into the relay/fuse box. Far right connection doesn't seat the whole way. I have it ziptied in place for now, but would like a better solution. With the wiring fixed, I did a valve adjustment and it fired right up, but seems to be lacking power on hills. I just ran it around my yard real quick and definitely feels like it's lacking power on anything other than flat ground. I guess I'll have to inspect the clutch next.

I haven't had any service done there, just bought some parts for my Hisun 400 "Menard's Special." Rural King in Circleville, OH. I imagine that if they have parts any RK would.

As with any forum you join, there is a requirement for an obligatory introduction... and that seems fair. How else do you get that first post in there without jumping in with some stupid question right out of nowhere? Hi. I'm Space Ghost. Well, not really, but that was my call sign on my last deployment before an IED made me non-deployable, and I an now retired/disabled, and living on my wonderful VA disability. I did almost 28 years in total between the Army, Army Reserve, and National Guard. 1 deployment with the Reserve (Desert Storm) and 3 with the Guard (1 pre, and 2 post 9/11) Married (going on 30 years) one of each. (both out of the nest) My vehicle is (at least not yet) not a UTV, however, it is an ATV, A 2001 Kawasaki Prairie 400. BTW, That's Brandy, my former PTS/TBI service dog on the bike. RIP old girl. She's internet famous. Perhaps you've seen her before... The reason I'm here is that Arthritis is starting to set into my wounds and my mobility is getting worse. I will be selling the quad bike soon, and going with a SXS, and have selected a Can Am model as the replacement, so I figured I had better get on board a forum somewhere. Just put in for my Guard retirement, and will be very soon looking to get into a Commander 6x6. Wouldn't mind having the Limited with the Hvac system, but am really not sure it's worth the extra 10 grand or not. Plus it's 500 pounds heavier, and I prefer the doors off in nice weather. It's so much easier when working in the yard, and so much more fun when on the trail. Anyway, I'm here now, so it will help me research more and make up my mind. Plus once I have it, I'll be able to share stories about it and of course, continue to learn more, as it will be my 1st sxs. Still have time before I get my retirement. Takes a good 90 days at least according to the guy I talked to... Typical government efficiency... lol.

Yep and I bought it for $3000. You will notice that I added a bunch of crash bars on the front, that is cuz I ripped all the fenders of crashing through brush. I made my own fenders out of 3/16 polycarbonate, fit to the frame and no more problems.

Warmed up relatively speaking here in mid Michigan. 16 F this morning, and with the increased temps comes the almost constant light snow. A little over 3 inches overnight with light snow continuing unabated. Will plow again mid morning, and likely again late afternoon. Not a big job but has to be done on a hillside drive facing NE. Otherwise it just becomes a sheet of packed ice.

Once it gets a little below zero F, the snow lightens up. More of just frozen humidity hanging in the air like a frozen fog. At 1120 hours my local temp is way up, its now 5 F with a good NNW breeze. Looking to warm into the mid 20s by week's end.

Thanks. I need a passenger side seat also. Been watching Marketplace but nothing yet. I guess I'll have to bite the bullet and buy a new one. Won't do that until I get it running.

Welcome, to the board. In in Eastern, KY also. Not any local authorized repair shop around here that I can find. Haven't tried any other place. Since it been down for a while. Charge the battery. Then check for spark. Check for any loose wires and connections. I changed the oem seats in my Axis 500, replaced with seats from a RZR from ebay. I made the seat base and they fit pretty good. I gave 1 of the seats to a guy up the road for spreading some dirt in the driveway. Gave one to my brother to replace a seat on his mower. Good luck, let us know how it goes.

Not long here myself, and don't have a Kioti anything, but welcome to the site! And a hearty Thank You!

I'm retired contractor..no more interviews or training for me. No boss to fire me..except maybe the wife. Lol. Spend my time thinking...what fun thing can I do tomorrow? Life is 👍

Congrats!!!!

Been there done that. Got the DD214 to prove it. Still can't be an artist. Said my condition was not service related. LOL Just got a call from the GF at new company. Said he'd send me a list of what to bring for orientation and training and I'd start on Jan 7th. My future is looking so bright I've got to wear shades.

Alien10 I didn't think any disrespect was implied or intended. I really didn't get offended in any way, shape, fashion or form. I REALLY did appreciate the education on the workings of the compression tester. And truly never thought about how it worked. And as a man that knows it all (joke intended), I didn't read the directions. Or didn't receive any. I've had this for 5 years. And either the directions never came with it or walked away. And if I've offended anyone with the blonde comment, I truly apologize. Didn't mean to. It's just a running joke between me and my wife. Anyway, all good. Thanks again.

Couple of other thoughts... A head gasket can fail to the oil passages, to the coolant system, or to the outside air. Are you getting excessive crank case blow by? Is there any external compression leakage? Are you getting combustion gases in the coolant system? Cap off coolant system shouldn't be expelling gases or pressure. Has the coolant level dropped or increased? Does the coolant appear to be contaminated in any way? (Oily, brownish tinge etc.) Just a few things that came to mind. Good luck.

This was the solution

It's gotten simpler since that first post now that GC2 form factor batteries are available. But to your comment, this is a one-time thing and is frankly because HiSun went with older technology batteries when it came out. Now to "fill up" I just plug in to an outlet at the end of the day. No going to the station to fill up cans of gas, no fumes, no noise, no oil changes, no maintenance issues with all the additional little parts that keep a combustion engine going and tuned up, no worry that my UTV sat too long between uses and might not start or the gas needs stabilizer. I can even run electric loads like the light bars I installed without leaving an engine running and worrying about the little 12v battery. I've even considered adding a 2000W 48v dc to ac inverter to run power tools.

Thank you. I’ve thought about drilling a hole, but the bolt heads line up with the back of the rear light assembly. So I think, with my luck, I’d end up ruining the light too. I ordered some of the 6mm threaded quick nuts that slip over panels. From the diagram you sent, they could be part number 3. It’s really hard to tell. Coleman was not any help, sadly.

A BFH will fix it or fix it where it will never give you a problem again.

And that's just the first week! It gets worse..The overheating, the gasket failures. The brake issues.If you can't fix it yourself, It really is cheaper to pay $3K more for a HONDA .

i have a kaw mule...............use it around house for hauling, plowing snow, etc.............but my mule is a 600..............no speed demon...............has been reliable (purchased 9 yrs ago), but with limited top speed, don't think it would be my choice for 10 miles drives.....agree with KLM, be ready to drop some cash, dealer access is extremely important (to me), and nothing you can buy at lowes, tractor supply, etc................good luck

I work on a ship that travels between Houston, Southern Lousiana, and Florida...miserable all summer. I dont know how you guys manage it. I never seem to find the right balance between staying hydrated and peeing constantly. I have worked asphalt barges in Lousiana in the summer too. 300 degree cargo means the temperatures on deck are even hotter since it radiates through the steel. Much nicer at home in Maine the other half of the year.

I guess it's whatever you are used to. Personally, I don't do well with humidity above 70%, like Alien10 says. I rarely leave the a/c in those conditions.

lol We only get low 70% humidity in January cold fronts...We wake up to 96% every morning ..Last year we actually had Heat index in the 120s for a month.. Its hot down here in the swamp.🥵

@Alex Fantastic! You fixed the add conundrum. It was really awful. Thank you so much. The forum is useable now.

The engine is a 95% clone of YAMAHA Rhino but built with lesser quality parts and assembly..I Have replaced broken defective parts with YAMAHA Parts on my 500 Hisun engine. It has become acceptable SXS now. Mine broke on its first day in its first mile. Neither Hisun or Massimo would back warranty. 6 trips to shop all paid out of pocket..I discourage anyone from buying anything made by Hisun.☠

I really believe that the design of the Hisun 500/700 is very good but the people building them are very bad. They apparently know nothing (or just don't care) about quality control and customer support. If a good company were to buy them out and fire everyone that ever had anything to do with building them and replace with good engineers, QC, customer support people, they could corner the market. As it is now don't buy one unless you are fully ready to maintain it on your own because you will have problems.

That's sort of a confusing answer because of the way hisun terminology works. The engine & the wet clutch & the high/low/reverse gears (which is what we traditionally term a "transmission") all share oil. The rear differential has its own oil, but it isn't a "transmission" except in hisuns terminology. They also use the term "final drive" or something like that in some literature.

I fixed it -- evidentley when I checked the oil one of the times, I unplugged a green wire -- changed the oil today, noticed the unplugged wire, and now the issue is resolved...

welcome!

Are you talking about an electric heater? if yes its likely too much current. There might be 10 amps of available current coming out of the rectifier that isn't already claimed by the ECU and factory lights. 10 amps @ 12V = 120 Watts, which is about what an electric heating pad runs. If you're talking about a fan for a engine coolant based heater it's probably ok. If you have accessories and the running voltage is below 13.5V you have too much stuff attached. If the battery light comes on it means the battery is actively being discharged while running. Stator based charging systems on these things and tractors etc are really meant to power the ECU and factory systems not to provide a lot of extra power for other stuff, it's not like the alternator on a car.

The main trick is tilting the front end up. Block the rear wheels and jack up the front end at least a foot. A convenient ditch works well also.....rear wheels in a shallow ditch. The head bleeder screw should be opened. With the engine NOT running, almost fill the radiator (leave some air to avoid a mess) and burp (squeeze the lower hose line before the metal tube at the engine base passenger side floor area). Watch the radiator and the the bleeder. With the radiator "higher" than the head bleeder, the air should be bled and coolant dribble out. Close the bleeder and refill radiator (your clue you displaced the air with coolant) and start the engine. Burp more while running and if you get the circulation going the hoses will warm up. More bubbles should surface at the radiator filler neck. Shut off engine. Open bleeder and release any air in the head. The puke jug needs to be filled about an inch above the full cold line. Use a shop towel as a "seal"and use an air nozzle to SLIGHTLY pressurize the puke tank removing the air from the tubing line to the radiator neck. Then the radiator starts to overflow, a third hand can install the radiator cap. Run the engine and determine the head and hoses are at the close to the same temperature (as in warming up) through out the system. IR temp gun....fairly cheap now....can get real numbers. Scan the radiator, hoses, cylinder and head.....if all close you are done. Recheck fluids when done riding. Recheck the bleeder and top off the puke jug as required.

From the look of the picture on the post, I can think of a couple things

My dealer gave me an electronic version of the service manual and I have sent it to Kingfish. I will see if it will upload here for others to use. I'm not sure if there is a more appropriate way to do this, let me know if there is.. 2015-2017 Service Manual - Sector E1.pdf