86 Honda 350x Manual
Carbs are the same. I could tell you most of the differences. It would take me 3 months before i remembered every one.
Grab bar, Rear Carrier, Rear sprocket bolts, 85 had different size motor mount bolts, 86 had the steering stop cap, black upper tripple tree on the 86. I also believe that there was some difference in tank shrouds. I think the true 85 shrouds may have hit the front forks so they updated them.
86 Honda 350x Material
The jug and timing tensioner are different, along with the oil pumps and clutch routing. Front brake calipers were different in appearance. The kill switch was different in appearance. 85 tank had different colored honda wings, and warning decals. I'm also thinking the heat shield on the header pipe changed a bit. The rear garnish had different stickers for 85-86.
86 Honda 350x For Sale
Rear mono shock had a different knob on resovoir in 86. The 85 swing arm was also different to accept the different brake stay. Also as stated above, clutch cables and routing, actual clutch lever inside the case, frames were a bit different, rear brake caliper Stay and bracket, plastic color, seat lettering and what not.