1982 kz550 starter question

Did the starter between a 1981 and a 1982 change for the kz550? My friend told me they should be the same part so I bought a 1981 starter on eBay but when I went to put it in the gears look different. Am I doing something wrong or is it just totally a different part and I need to buy one specifically for 1982?

Thanks

All of these 550's used the same starter motor:

KZ550-A1 (1980)
KZ550-A2 (1981)
KZ550-A3 (1982)
KZ550-A4 (1983)
KZ550-C1 (LTD) (1980)
KZ550-C2 (LTD) (1981)
KZ550-C3 (LTD) (1982)
KZ550-C4 (LTD) (1983)
KZ550-D1 (GPz) (1981)
KZ550-F1 (Spectre) (1983)
KZ550-F2 (LTD Shaft) (1984)
KZ550-H1 (GPz) (1982)
KZ550-H2 (GPz) (1983)
KZ550-M1 (LTD Shaft) (1983)
ZX550-A1 (GPz) (1984)
ZX550-A2 (GPz) (1985)
ZX550-A3 (GPz) (1986)

Kawasaki Part # 21163-1031

Thanks a lot! Here is a pic of the original (on the right) and the one I bought for eBay that was supposed to match it lol.

After doing some research it looks like it's supposed to go in a KZ650. Part number is SM-224.

For future repairs & parts Kawasaki.com has a cross-reference & other info in the owner info section. I find it easiest to do the Search-by-Model-Info without fumbling around w a vin or anything. Just pick a year only then choose a bike from the list. The diagram reference numbers are usually clickable which speeds up finding the full part number below. A lot of other stuff can be clicked as well, so click stuff.