YAMAHA 250 DT1M Service Manual Supplement #1999 yamaha cylinder head seal # 807-77470-00 NOS New Old

# 807-77470-00   NOS  New Old Stock

# 3R2-28199-71  NOS  New Old Stock

YSR50  1987-1992

1982 DT100J - Cylinder Head - Cylinder

CB750F  1976-1977

YAMAHA 250 DT1M Service Manual Supplement #1999 yamaha cylinder head seal # 807-77470-00 NOS New OldYAMAHA 250 DT1M Factory Supplementary Service Information for New Model, 15 pages NOS New Old Stock. #1999 A This Yamaha 250 DT1M is designed as a high performance motocrosser for racing. The DT1M is converted into a fully equipped motocrosser with the DT1C G. Y. T. kit parts. For complete service procedures, this Supplementary manual is to be used together with the DT1C Service Manual. This manual is in excellent condition.