Re: snapper yt12d rear end fluid?
According to the manual for transmission differential remove check plug on the inside of the unit to check level of oil. add snapper #0 grease as needed thru upper fill hole to bring level up to the lower of the check plug hole. reinstall plugs. (chain case) remove plug and check if dry, add 1 ounce of snapper 0 grease do not overfill. Total capacity must not exceed 2 ounces. These our direct quotes from a yt 12d series 4 tractor manual