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Here's a couple shots of mine--I had to "re-brand" it as an LSV (Low Speed Vehicle) to make the State of Florida happy (they had to do a physical inspection, I figured it would not hurt to badge it as an LSV) and get it registered: (made it into an "Outfitter LSV" with 3D printed badges--just used that gray 3M double-sided tape to stick the low-speed placard on; we had just been calling it "the thing"--"Thing 1" was what my great-granddaughter thought it should be called. I thought "Thing 16" as it's a "4x4", but my wife said no one would "get" it... I have a thread re: the Briggs muffler/cheap noise reducer--works great with the end-cap perforations opened up to 5/32" (from 1/8" OEM, a 56% increase). Took it off a few days ago, just made it louder--no power change at any RPM--put it back on to make myself less obtrusive... The flag decal is the "Bonnie Blue Flag"; of the Republic of West Florida and an early flag of the secessionist States during the War of Northern Aggression.

Went to do the break in service on my buggy the other day. 10W 30 motorcycle oil, check. 85w 90 for rear diff, check. ATF for front diff, check (okay I cheated and used trans-hydraulic tractor oil, similar stuff.) Oil filter, now that was a tough one. Being the good red-blooded American male that I am, I refused to buy the overpriced Hisun filter and have it shipped in. Surely there was a cross reference that will fit it... So I do some digging, and some measuring, came up with a 2.5inch diameter filter with 3/4 16 threads. Easy, pulled the correct filter at Walmart, an AC Delco is what I grabbed, no dice. The only difference is the Hisun filter has a concave top around the threads, while most filters are covex or flat. They designed it (probably to sell filters I guess) to where the base of the filter adapter on the machine will bottom out on the filter before the gasket on most other brands of filter. I did find a filter at tractor supply for Toro twin cylinder lawn mower engines that is identical to the Hisun filter. I just ended up paying more than if had ordered the Hisun one. Tis the price of stubbornness.

Have trouble with that factory filter (removal)? That was the most I have ever cussed in that short of a time period. Talk about a goat rope. I *hate* working on my 550. It is my punishment for being an a**hole when I was younger. lol. Motorcycledoctor.com is where I get my filter. Also can get from Amazon. https://www.amazon.com/gp/product/B01N2UIZT6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 Craig C.

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...