cliffyk

This from Amazon ($199) says it fits 2006-2009 Left or Right. Replaces OEM# 611-04071A, 911-04071A What exact model is yours (it should have some "4xxx" model designation)? Look in to a local automotive CV joint repair shops--there's more about this stuff that's the same than different, some sharp mechanic may look at it and say "I know what that is!"...

i think they are gone, their last EPA certification for the T4 was in 2016. Here are 2020 Google Earth images of their 1650 E Riverview Dr. Ste 110 Phoenix, AZ 85034 location: Per Import Genius their last shipment T4s from Asia was in February of 2007... It appears you may be able to order on from the manufacturer; CHANGZHOU JOYNER RECREATIONAL VEHICLES CO.,LTD. if you are really in to self-abuse... Joyner appears to be yet another example of a relatively successful ATV dealer who had a delusion of grandeur and launched a corporation to brand and market some attractively priced (for them) import ATV/UTV (probably located on Alibaba) but lacked sufficient resources ro pull it off long term. According to various corporate records (mostly D&B) I found the Changzhou Joyner Recreational Vehicle Co. has 50 to 100 employees with annual revenues of $1, 000,00o to $2,600,000--hardly a manufacturing giant. Hisun USA has revenues of $9.25 M, not Yamaha or Kawasaki class certainly, but a lot more staying power. Chongqing Huansong Industries (Group) Co., Ltd. (Hisun's parent company has 1000+ employees, 9 subsidiaries and makes 70% of their parts (probably better than Ford or GM). I'd look elsewhere...

Their stating it"...doesn't really have a regular differential." is correct--however to call it "...a 'positrac' type..." is not. Posii Trac is GMs trade name for their clutch-pack type limited slip differential, which is a differential with a stack of alternate composite-faced and bare steel plates, the composite plates are splined to the carrier, the bare plates to the axle (or 'tother way round). In operation when one wheel slips the lateral force generated by the driven wheel's side gear clamps the clutches, locking the wheels together. However It is a real differential and behaves as such when he force needed to spin the wheels at differing speeds exceeds the clamping force of the clutch pack--I.e. it is "limited slip" in straight-line travel. Ford call s it Trac Lok. Our vehicles do not have a differential at he rear, but rather what is usually and correctly called a 'Rear Reducer" or "Rear Bridge (Reducer)" that uses a solid "spool" connection between the axles; there is no possibility of the wheels rotating ate differing speeds, or with differing power. Both axles connect directly to the reduction unit's ring gear HS550 rear reducer: The downsides to this are, as you stated tearing up soft surfaces in tight turns, and tire wear. The upside is very much improved traction in straight-line and modest turns without the cost and complexity of a limited-slip, or open but "lockable" differential¹ (there are other types in addition to the clutch-pack variety)--his is not a benefit to be overlooked. ------------------------------------------------------------------------------------------------------ ¹- Some pre-2016 Hisun 550 models did have open, but lockable (solenoid operated it appears), rear differentials--my understanding is they were troublesome and did not drive the vehicle especially well off road when not locked; so they were generally kept locked which of course lead to "unlocking'" problems as the miles piled up.

Put 15 miles on it today mostly on the beach in 4WD--the front diiferential is definitely smoother and quieter, and engaging/disengaging 4WD and front lock more positively with the ATF...

In a recent thread fellow forum member mcraigchr asked about Hisun's recommendation to use Dexron 3 ATF in the front differential--I had noted that in the latest SM I received for my HS400 (a "UT400"as labeled by Coleman) that was also the recommendation. AS it was in conflict with other information in the manual I contacted both Coleman and Hisun who both verified the recommendation. from the HS400 SM¹: from the HS550/750 SM¹ (same table obviously): I did not find this at all odd, as ATF is used in many high torque gearboxes and manual transmissions--it is VERY heat and wear resistant with additives intended to protect the sliding contact of helical gear sets as well as excellent protection for ball bearings, and bushings. I had replaced the front diff juice on my 2020 HS400 to 75W-90 SAE GL-5 gear oil at 20 hours (per OM "break-in" recommendations) and decided I would use Dex 3 at the "next change". Today in a bout of ambition I did just that--then took off for a 5 mile ride to see "what was what?" My first impression was that the differential was noticeably quieter and smoother, after riding a couple miles I stopped and engaged 4WD--as I had suspected 4WD engagement with the ATF was much improved, no need to blip the throttle (or drive a few feet) to get it in or out of 4WD as had been the case with the gear oil. The front differential lock also engaged much more positively and smoothly. FWIW I used Valvoline DEx/Merc Full Synthetic MaxLife ATF (fully Dexron 3 compatible)--it took about 19 ounces to fill it to the botom of the filler opening (the OM says 9.6 oz.; on my first change I drained out 18 oz. or so). So, bottom line; highly recommended! --------------------------------------------------- ¹ - "Dextron" with a "t" is a very common misspelling/mispronunciation of "Dexron"--I guess because so much contemporary stuff is named "somethingtron" I have even seen it on many sites that should REALLY know better.

Not all Hisun 550 models (mostly 2016+ models) do not have a rear differential. They are a "spooler" type axles with a solid center section--I.e. equal power to both wheels at all times. OP (older thread, one post newbie has probably moved on but I'll try to help) , what model Hisun 550 doe you have, is it an "HS" series, a "Sector", "Vector" or "Strike"? What model year is it?

View File UTV-ATV US EPA Who Makes What This document contains "who makes what ATV/UTV engine" information from the 2021 EPA emission certification database. IT can be interesting seeing where all this stuff actually comes from. It includes model year, engine family, manufactuer (brand) name, actual engine maker, vehicle maker, certified models, displacement (cc), power¹ (kW, multiply by 0.746 for HP), and at what rpm that power was observed... ------------------------------------------------------ ¹ -the output power shown is that observed by the EPA during testing the bare engine (engine driven accessories installed but not active). It is a much more real number than whatever the vendor claims in their ads... Submitter cliffyk Submitted 04/22/2021 Category Other UTVs  

There are some very fine products made in China. I now have 56.6 hours and 744 miles on my 2020 Coleman UT400 (Hisun HS400) and it runs like a champ with no even annoyances since I got the shift mechanism properly adjusted. Coleman support has been pretty good, supplying me with both owner's and service manuals, which although at times poorly abd oddly translated, and at times incorrect, have been helpful in understanding the beast. I changed all fluids with 29 hours on the clock, finding no indication of excessive wear (metal particles or even excessive sheen in the used fluids). Today I will be changing the front differential fluid to Dexron 3 ATF as recommended in the latest service manual. The chassis and suspension were made in Vietnam by the Vietnam New Century Industrial Company, the engine and drive-train by Hisun's parent company, the Chongqing Huansong Science and Technology Industrial Co., Ltd. The chassis is well-engineered and built; the welds are perfect, obviously machine made, All bushings and other fitments are as they should be The engine and axle gearbox castings are nicely made and finished, not sign of any leaks other than the VERY slight weeping (barely visible except for dust accumulation )that often accompanies gasket-less assembly (gaskets make up for less precise fit and finish of sealing surfaces, many/most Japanese motorcycles have use gasket-less assembly of crankcases for decades). The engine control and other electronic/electrical controls and switches are as good as those used on any similar machine from any maker (probably even the same). Look at the components in your high-priced "name brand" offroad vehicle, you'll see 90%+ are of Asian origin. In my 72 years I have seen a lot of real ASian junk--the early Toyptos were rolling jokes--but the Asians are a proud people and steadily and consistently improved their products 'til they took over an industry dominated by US manufacturers--who almost lost it all (one could perhaps argue they did). I also have no doubt that many, far too many, buyers of Hisun products will beat the crap out of them, ignore fluid changes, and otherwise abuse the piss out of their machines. I also have no doubt there is some real garbage floating around out there --however from what I have seen of HIsun's latest product it is as good as any other out there... I will add that I avoid 3rd party resellers--vendors with no solid link to a manufacturer--Hisun is the Chongqing Huansong Science and Technology Industrial Co., Ltd. outlet for it's off-road vehicles. I.e. they have real "skin-in-the-game". Coleman makes no secret of who actually makes their vehicles sold under the Coleman brand. Some ATV/UTV "brands" just buy vehicles as assembly kits from whoever give them the lowest price, and after final assembly slap their stickers on them--they are not solidly attached to any one manufacturer and therefore are not full participants in that maker's (or your) success... And as always, "If you buy the cheapest there is there is a good chance you will get the 'cheapest there is'"--it is not always true, but it''s true more often than not... Nor does the EPA required certification sticker:

View File HS400 Seat Belt Defeat and Oil Filler 3D Here are a couple more 3D printer files for the HS400/Coleman UT400 & Outfiltter 400. Included in the .zip file are my version of a seat belt interlock defeat insert (SeatBeltThing-01.stl)and an oil filler adapter allowing a 1/2"I.D. hose to be attached making adding oil a less messy operation (OIlFiller-whole-03.stl) --both may also work on other UTVs with similar the seat belt connectors and a 3/4" x 10 threaded dipstick... Submitter cliffyk Submitted 04/20/2021 Category Hisun  

Here's the EPA list of ATV/UTVs with Loncin engines...

Huh... Don't know who makes them. Will have to take a look next time I'm in the store...

Curious, is that a Predator engine as in Harbor Freight's house brand?

Very nice work!!!

I would consider 1/16" to 1/8" to be normal--more than 1/8" but < 1/4" would cause me to look for the source but not yet be concerned. It cannot/will not be 0....

I agree with others, this message is disjointed and confusing. "...still have problems..." tells us nothing--What are the problems? "... could not speak no English at all..." means they could speak English and "no not English". Needing a tranny in 20 hours and motor 30 says to me that someone beat the crap out of it...

I found this in an American Sportworks owner's manual. Apparently is has vacuum operated fuel pump with a gravity pass-through--this in common on riding mowers, transporting the machine without the fuel valve off jostles the carb float about and dumps fuel into the cylinder/crankcase: Fuel pump looks like this, very similar to that on my Ariens 22 HP mowers with a Briggs V-Tec engine.... Could be the same pump (or interchangeable--B&S p/n 808656)

I do not really have anything to "tie down", just stuff to keep fom sliding about and blowing out-so I installed a dozen or so small D-rings, rated @ 100 kg (220 lbs.) each--probably good for 100 lbs with the #10 self-tapping screws I used; Got 20 of them from Amazon for $7.00--plenty good for a case of beer or an errant Shih-Tzu...

IT is said you "cannot buy love", however that is not true--you can buy a dog. Best damned animal on the planet...

Good name for a little dog, has some "pizazzz" to it!

Here's a pictorial connection diagram of the Hisun speed limiter "black box"--it should be under the hood up high somewhere (mine is right in front of the cowl near the brake reservoir (it is clearly silk-screen labeled "Speed Limiter"): Both the "reverse" (pin 4)and seat belt (pin 5) connections are "active" low (ground) signals--just cut or otherwise disconnect either wire to disable that function. You could probably disconnect the speed input on pin 4 or ECU output signal (pin 6)) to disable both.

Here's "Spike" in his position--in action he's stuck to me like glue:

The latest SM for my HS400 (Coleman UT400) also states using Dexron 3 ATF (Dexron, no "t", the "t" is a common misspelling) in the front differential. from the latest Hisun HS400UTV-5 Service Manual: I have confirmed with Hisun that this is correct--ATF is used in many gearboxes, not just automatic transmissions. It is VERY heat and wear resistant (it has to be to survive the clutches and planetary gears in an auto-tranny) --the Tremec TKO-500 transmission in my 2003 500 HP Mustang cobra used Dexron 3. I suspect in the Hisun front-end it may help the 4WD/Differential Lock mechanism work more smoothly (on my 400 the shift in and out of 4WD and "lock" sometimes requires a quick "jerk" of the accelerator. I changed my front diff to 85W-90 SAE GL-5 at 20 hours use as I had not yet received the latest service manual, but at the next change it gets Dexron 3... The "final drive" is the rear axle gearbox. The transmission is in the crankcase lubricated by engine oil (that's why it's IMPORTANT to keep the engine oil clean). BTW, the rear axle gearbox is not a differential--it is a "spooler", equal power to both wheels , the narrow track makes that possible (at the expense of tire wear)--but it is also why traction is so good in 2WD...

I believe that is actually a Hisun HS700UTV Crew (same as the Coleman UT700). They have a 10 MPH limiter for reverse gear--If the vehicle (or its rear wheels) are going over 10 MPH it will cut fuel and sputter. The same black box is used for the seat belt "safety" feature...