Hisun 400 UTV leak from side of transmission

[Davo]

I have a Hisun 400 UTV that has developed a sneaky oil leak from the end of the black plastic thing protruding from the side of what I think is the transmission on the driver’s side. Looking for any guidance or advice as to what this thing is and whether it’s fixable.

[strike250]

can you give me the year of your unit

[strike250]

It should be the speed sensor cover,   about $20.00 P/N 36500-003-0000 contact motorcycle doctor

[strike250]

but with correct year and model, I can get you the exact information

[strike250]

In the manual they call it a fuel seal (#5), but I dont have a part number or price. it doesnt look very expensive at least.

[strike250]

Here you can see in the parts catalog it calls it a speed sensor, but I will confirm by Monday for you.

[Davo]

Really appreciate your help with this. It’s a  2012 model.

Thanks 

Dave

[CamJordan]

I have a leak on my 2012 hisun ys400 in the same place on 36500-003-0000 I was wondering if this can be removed and re-sealed? 

[Andris]

Hello. I have hisun 400 atv 2004yer and i have same problem. Wher i wads buy that cover

Edited March 22, 2021 by Andris

[cliffyk]

Apparently at some time it was the speed sensor--I found this part on AliExpress (who I wouldn't buy from if they were the last vendor on earth):

However on newer models like my 2020 and apparently the OP's 2012 the active speed sensor is on the rear reducer and there's that crappy plastic cover on the crankcase.

I think on the 2012 the reducer mounts with the "flat" side on the right and the sensor is on the left--don't know when or why it was "flipped", but it seems to coincide with the engine being changed to the rear slanting cylinder.

a 2020 model from Coleman's site:

yup--an undated, I think pre-2018 HS400:

I'd pull the plug out, make sure it's intact, clean it well and put it back together with a good dose of Permatex's Ultra-Grey gasket maker (best I've ever used--the crankcae on my 2003 Suzi Burgman 400 was reassembled with that 5 years and 26k  miles ago) --if it is cracked use some of JB Weld' high temp stuff to fix it: