Anyone out there know how I can tell the year of a Moto 4 350. I bought this atv from a lady and she's not sure of the age. I'm thinking 89 to 91.

 

There should be vin number plate on the front of the frame. try looking there.

 

The serial number on the Moto4 350 is located on the lower left frame rail. The easiest way to describe here the exact loaction would be to look at the lower left frame rail between the front fender and the toe rubber on your gear shifter. It will be 17 characters long. The stamping isn't deep, so even minor crud will hide it from you unless you clean the rail first.

Another trick to reading the slight depression numbers is to throw a bit of cooking flour on there after you wipe the area clean. Those numbers and letters will stand out then.

Good luck