YAMAHA MODEL AND INDENTIFICATION NUMBERS CHART

1971 MINI ENDURO

JT1 DESERT ORANGE SERIAL # JT1-000101 - 041708
JT1 DESERT ORANGE SERIAL #JT1L-200101 - 201152
W/LIGHTS

1972 MINI ENDURO

JT2 COMPETITION SERIAL # JT1-050101 - 071150
MX YELLOW
JT2 MANDARIN SERIAL # JT1-300101 - 330000
W/LI ORANGE

1974 YZ A

YZ 80 A SERIAL # 462-000101 - 009661
YZ 125 A SERIAL # 453-000101 - 007730
YZ 250 A SERIAL # 431-000101 - 004104
YZ 360 A SERIAL # 432-000101 - 000631

1975 YZ B

YZ 80 B SERIAL # 492-000101 - 018570
YZ 125 B SERIAL # 453-100101 - 101620
YZ 250 B SERIAL # 483-000101 - 002759
YZ 360 B SERIAL # 484-000101 - 001459

1976 YZ C

YZ 100 C SERIAL # 1J4-000101 - 003470
YZ 125 C SERIAL # 537-000101 - 014044
YZ 125 X SERIAL # 1G8-000101 - 007120
YZ 175 C SERIAL # 1L8-000101 - 001610
YZ 250 C SERIAL # 509-100101 - 103405
YZ 400 C SERIAL # 510-100101 - 102838

1977 YZ D

YZ 100 D SERIAL # 1J4-000101 - 103550
YZ 125 D SERIAL # 1W1-000101 - 015610
YZ 250 D SERIAL # 1W3-000101 - 006520
YZ 400 D SERIAL # 1W4-000101 - 006720

1978 YZ E

YZ 100 E SERIAL # 2K5-000101 - 006572
YZ 125 E SERIAL # 2K6-000101 - 015080
YZ 250 E SERIAL # 2K7-000101 - 009850
YZ 400 E SERIAL # 2K8-000101 - 007406

1979 YZ F

YZ 100 F SERIAL # 2W5-000101 - N/A
YZ 125 F SERIAL # 2X3-000101 - N/A
YZ 250 F SERIAL # 2X4-000101 - N/A
YZ 400 F SERIAL # 2X5-000101 - N/A

1980 YZ G

YZ 100 G SERIAL # 3R2-000101 - ON
YZ 125 G SERIAL # 3R3-000101 - ON
YZ 250 G SERIAL # 3R4-000101 - ON
YZ 465 G SERIAL # 3R5-000101 - ON