The biggest change for 1977 is the new wide, dark
blue fuel tank stripe for 1977 only. On some 1977 models,
the foot brake pedal is black instead of chrome. The bike
pictured has a chrome pedal. I don't know if there is a
change in the middle of production, or if someone just
subbed a chrome part on this bike. 1977 Started a 5 year
slump where all Z-50s came in Tahitian Red.
Specs
Model Year:
1977
Frame
#:Z50A-6200003~
Engine #:Z50AE6114616~
New for this model
Wide Fuel tank stripe is blue
Running Changes
Foot Brake Pedal is changed to black instead of chrome
Unique to this model
Both of these pictures came from circledirt.com
which has bikes for sale, old dirt bike racing stories, and an
oration on Honda Monkeys.
These two pictures came from online auctions. The bike in the first, fuzzy picture appears to be a complete example. The bike in the second picture is missing the red side cover and has a CT-70 style magneto cover on the engine.