Sunl 4 wheeler

10W-30. Look at the filler cap, it is often embossed into it.

https://www.google.com/search?q=Sunl+4+stroke+oil

Yamaha ATV VIN plates, mounted on the frame, may be positioned behind the left wheel well, on the front of the ATV or on the left side beneath the shifter pedal, depending on the model

have no idea at all what that is.
and ATV, if yes post to ATV section and not Cars.
and no question asked.
is it a year question?
is this a road car.
if yes, and in USA is it>
then the engine serial number has the year code
as does body VIN.
so. next time stated what the heck is a 4 wheeler.
suzuki makes many, that have 4 wheels.

the only thing with "JUG stamps" ive ever seen are
motorcycle engineS. (or ATV that many use same air cooled engine)

NO IDEA WHAT CAR, OR TRUCK
NO IDEA WHAT ENGINE,
NO IDEA WHAT YOU ARE ATTEMPTING TO DO.


229 CUBIC CENTI-METERS. CC'S
NO car has this, here.

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all motors should have a serial number on it. search on the internet the first half of the number (or all but the last few numbers) and see if you can id it that way. i usually can .

i have a 250 and there is a spacer in the gear box right under the starter if the spacer isn't sat right it will make gears bind and nothing will work starter wont turn over at all but if you pull the casing off the left side of motor the starter will spin free. reset the spacer or get a new one

if you have replaced all that it sounds like it is the stator. its an alternator for small engines. get one on ebay cause factory are always expensive. its located behind the pull start. take that off then the side case cover.

According to the Yamaha VIN dudes, that is a 1988 YFM 200DXU....Cheers.

It should be stamped on the left hand lower frame.

The Sunl's are notorious for the stator going out. Check with your dealer for specs on testing the stator. It could also be the CDI unit too! I hope this helps