Neer to find a year of polaris
#1
#2
Older model 250,300,350 and 400,425,etc (88 to 95) had a W then the year model on the right side down tube. Serial number was on the back side of the tube. If you still have the recoil serial number,the first two digits are the year model. If you have less than 17 digits on the left lower frame on the later models then someone has ground off some numbers.10th digit on these was the year model.
#3
If you do find the VIN you can check the model year code here. ATV Vin Number : Check and Decode Your VIN