Model Guide
1972 - 1973 Z1 900
Candy Orange & Candy Yellow (Jaffa & Lemon)
Frame: Z1F-00001 to Z1F-19999
Engine: Z1E-00001 to Z1E-19999
First 5000 frame numbers considered 1972 model(worth more money)
raised section where engine number is stamped is shorter than later model
28mm carbs
17mm drain in bottom of float bowl
Single disc
Black engine
Speedometer in MPH
Mufflers have no stampings on them
Chain oil tank under left hand sidecover
1974 Z1A 900
Candy Brown/Orange & Candy Green/Yellow (Red Tiger & Yellow Tiger)
Frame: Z1F-20001 to Z1F-47499
Engine: Z1E-20001 to Z1E-47497
28mm carbs
Single disc
Silver engine
Lines on tail piece go straight back
Speedometer in MPH or KM/H
Chain oil tank under left hand sidecover
1975 Z1B 900
Candy Super Red & Candy Super Blue
Frame: Z1F-47500 to Z1F-85648
Engine: Z1E-47500 to Z1F-85847
28mm carbs
Single disc
Silver engine
KM/H Speedo
Brake light in tachometer
Lines on tail piece curve upwards
No oil tank
1976 Z900A4
Diamond Dark Green & Diamond Brown
Frame: Z1F-085701 to Z1F-117060
Engine: Z1E-086001 to Z1F-138846
1976 KZ900A4 American Import Diamond Dark Green & Diamond Brown
Frame: Z1F-500001 to Z1F-510340
Engine: Z1E-086001 to Z1F-138846
Z900A4
26mm carbs
Twin disc
Silver engine
KM/H Speedo
No reflectors on forks
No reflectors on rear shocks
New Frame (thicker tubing),
Tailpiece-Ducktail different shape
New fuel tank(seam on outside of tank) ,speedo & tacho, seat
New seat lock type ,sidecovers
Square tailight
New airbox and instrument panel
KZ900 Differences (american)
Single Disc
KZ Side cover badges
MPH Speedo
1977 Z1000A1
Diamond Wine Red & Diamond Sky Blue
Frame: KZT00A-000001 to KZT00A-027500
Engine: KZT00AE-000001 to KZT00AE-042500
1978 Z1000A2
Luminous Red & Luminous Green
Frame: KZT00A-027501 to KZT00A-038427
Engine: KZT00AE-042501 to KZT00AE-081565
1978 Z1R D1
Metallic Stardust Silver
Frame: KZT00D-000001 to KZT00D-017500
Engine: KZT00DE-000001 to KZT00DE-017500
1980 Z1R D3
Ebony (Black)