Toro 701791 WASHER BACK-UP replaced by 47-9670.

Fits the following TORO Tiller Models:
58070, 26" Tiller, 1983 (SN 3000001-3999999)
58150, 18" Tiller, 1983 (SN 3000001-3999999)
58160, 18" Tiller, 1983 (SN 3000001-3999999)
58170, 22" Tiller, 1983 (SN 3000001-3999999)