Hi all. I need to change the oil in my sons Hensim 70cc ATV. As usual, these chinese manual are usless. On the bottom of the engine there are two screws that look like any one could be the oil drain plug. Does anyone have any ideas as to which screw it might be. I know I can try each one but I figured someone might know. Could one of these plugs be tranny oil? Not sure what type automatic tranny it is. Are these Chinese eingines usually fitted with dry or oil lubricated trannys?

One more question. What kind of oil do you guys use in your Chinese ATVs? Being in the North East I was going to just use 10w-40.

 

The oil drain plug is the 17mm bolt near the right footpeg. It is close to the frame rail when you back it out, but it will clear. I put the back wheels on a couple boards to make sure I got as much of the shipping oil out as possible.

The engine oil also provides lubrication to the tranny, so I would recommend using a motorcycle specific oil that is made for wet clutches. I used some 20w-50 Honda Oil I had laying around, but will switch to 10w-40 when it gets a little colder. I can not figure out what they use for shipping oil, but it does not look like it would do too much for engine life.

 

Thanks. I will check it out when I get home. In the mean time, I stopped by Pepboys to pick up some oil and was suprised to see they have Valvoline ATV oil 10w-40 on sale for $2.50qt. It specifically says its formulated for use in wet clutch apps. Your info is greatly appreciated.