Operator manual #803737R2 9 pages 1.82MB IPL #810022R2 5 pages 1.49MB Sold 1978 model year only Fits C-Series tractors OM #803737R1 not correct PSB #235 shows correction This R2 manual corrects the mistake   Drive belt 9750 (5L x 69" or 5/8" x 69") Snowthrower 1978 42in model 86-42ST01 1978 serial numbers that have shown up for the 86-42ST01 004124 - Build date 1977 7199 July 18 Monday [M] 004218 - Build date 1977 7201 July 20 Wednesday 004253 0