Here is a link repository for the parts list I found online.I just share the links with you to help in your restoration work so they may go dead if the owner decides to delete the file. In PDF format if possible and without any fee or registration. I hope the list will grow with time. If you know something I don't reference, don't be shy...
HONDA parts lists
1960~1967 CB72, CB77, CP77
1965 CB 160
1968 CB 77
1968~1973 CB 350 K0~K4
1969~1975 CB 750 K0~K5
1971~1973 CB 500, CB 500 K1, CB500 K2
1972~1974 CB 350F
1973 CB 500 K2
1974 CB 550F
1975~1977 CB 400F
1975 CB 550 K3
1975~1976 CB 750F, CB750F1
1977 CB550 F2
1977~1978 CB 750 F2~F3
1978 CX 500
1979~1982 CB650
1983 CX 650 TURBO
KAWASAKI parts lists
Two strokes Mach series
1967 350 A7 Avenger
1967 250 A1
1971 500 H1A
1972 250 S1
1972 350 S2
1972 500 H1B
1972 500 H1C
1972 750 H2
1973 350 S2A
1973 500 H1D, H1E, H1F
1973 750 H2R
1974 400 S3
1974 500 H1E
1974 750 H2B
1975 500 H1F
1976 400 KH
1976 500 KH
Four strokes Z series
1973 900 Z1
1974 900 Z1A
1975 900 Z1B
1976 900 ZA4
1976 Z750 B1~B4
1977 650 Z B1~B3
1977 1000 Z A1~A4
1978 Z1R (KZ1000 D1
1981 1100 GPZ B1~B2
1982 1000 Z R1~R2
SUZUKI parts lists
1966 A100 AS100 AC100
1966 T10 250
1966 B100 B100P B105P
1966 S32-2 150
1968 K10 K11 K15
1968~1972 T500 MK I,II,III,R&J
1969 T305
1972 T350
1972 GT185K
1972~1974 GT550J GT550K GT550L
1973 GT250
1973 GT380
1974 GT750
1975 RE5 500
1977 GT750B
YAMAHA parts lists
1966 YL1~YL1E 100
1976 TT500D
1976 RD250C RD400C
1979 RD200DX 2R7
1979 RD250F RD400F
1979 RD400F DAYTONA
1979 to 2009 Off road bikes (IT,WR,YZ) a very long list
Other parts lists found on the Web
1966 to 2016 Husqvarna (not Japanese but useful to me) all the models ever made