Parts Diagrams
Understanding the Structure of Yamaha Part Numbers
550's and 600's
1981 XJ400(4G0)
1981 - 1983 Maxim XJ550H,J&K(5K5)
1981 - 1983 Seca XJ550RH,RJ,RK(4U8)
1984 - 1985 XJ600.FJ600,RL(49F),N(49A)LC,NC(51K)
1989 - 1990 XJ600 (3KM1, 3KM3)
1992 - 1993 XJ600SD (4DU1), SDC (4DU2) SE (4DU4), SEC (4DU5)
650's
1980 Euro style XJ650G(4K0)
1980 - 1981 Maxim XJ650G,H(4H7)
1981 Euro style XJ650H(4K1)
1982 Euro style XJ650J(14R)
1981 Midnight Maxim XJ650LH(4W5)
1982 Seca XJ650RJ(5V2)
1982 - 1983 Maxim XJ650J,K(5N8)
1982 - 1983 Turbo XJ650LJ,LK(16G)
1981 - 1983  Seca XJ750RH,RJ,RK(5G2,11M), P(24L)
700's and 750's
1982 - 1983 Maxim XJ750J(15R),K(22R)
1983 Midnight Maxim XJ750MK(33N)
1984 Seca XJ750RL(44X)
1985 - 1986 Maxim XJ700N(1FG),NC(1JJ),S(1NH),SC(1NK)
1985 - 1986 MaximX (all models)
1983 - 1984 XJ900RK(35H),RL(47L)
1985 XJ900N(1FX),FN(58M)
1995 - 1996 Diversion XJ900S, SH (4KM1, 4KM3, 4PR1, 4PR2, 4PS1, 4PS2)
1986 XJ600 (51J)
900's
1982 -1983 XJ1100J(10M)
1100
400
NOTES:

This is not an exhaustive list of all possible model variations. There are often slight regional variations to comply with local regulations. For example, it is quite common for different speedometers to be fitted depending on the use of MPH or KPH in the country that unit was destined for. In some cases, we have combined sets by adding just the variations for specific models. The model codes shown in brackets indicate the exact variation(s) the parts fiches were for. Other variations will be similar. In all cases, your Yamaha dealer should be consulted for exact part numbers before ordering since part numbers are often superceded by newly designed parts with new numbers.

In addition, there are some models for which we have not (yet) been able to obtain specific parts diagrams for. Examples include the Japanese home market machines like the 750A, 750D, 750E and 750EII. In these cases, the parts diagrams may be helpful to some degree since most of these machines were built using parts common to other models. For example, the  750E had a 750R engine fitted to a 650R chassis.  The one Japanese model we were able to source is the XJ400. The text is, of course, in Japanese but at least there are pictures...
1992 XJ900F (4BB2) [German]
1983 XJ750D Injection (Japanese language with Arabic numerals)