CB350 Transmission Help!

Oranga

New Member
I have a CB350 that i've been working on, very very slowly. It was fall of 2013 that I reassembled the engine, and i (stupidly) didn't test the shift forks or transmission to make sure they were installed correctly. My memory is hazy, but I'm pretty sure i put the transmission in neutral - with the shift drum in the neutral position with the ball (part# 26) in it's detent:

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and the gears in what i believed was neutral position. I put it all back together and I could spin the gears without moving the output shaft, so I thought I was in neutral and all good.

Fast forward to just this weekend, and I've finally got the engine in the frame, with most of the rest of the bike assembled. I put on my new rear sets and hook up the shift linkage and go to test it. No bueno. The shifts are very sticky, and it seems to be finding false neutrals all over the place, where the gear selector (part 7) is engaging part 9 halfway between star points. When i am in those false neutrals, i have to rotate the main shaft a bit to get it in the right spot so it can continue to shift to the next gear. I can feel points of resistance as i rotate it. The thing that gives me hope is that when i am in what i believe is neutral, the shaft rotates freely without resistance.

I know my description might be tough to follow, i will work on uploading a video of the problem in the next few days.

My question is, was it possible that I assembled the shift forks and gear shafts incorrectly? Or is there pretty much only way to put it together? I'm stressing out thinking about the possibility of tearing down my engine AGAIN.

PS: Embarrassing confession, but I assumed the bike was a 6 speed (i'm too used to modern bikes) and was FREAKING out that i wasn't able to get to all 6 gears. Please no judgment, this is the internet, where proper societal norms and respect for one's fellow man is the law of the land.
 
It's common not to be able to run through the gears while the bike is not moving. The transmission output shaft needs to be spinning or at least turning to be able to slot into the next gear.
I had this scare when rebuilding my 350 as well. Once I had the bike running, it shifted through the gears easily.
 
try backing off the detent #17 a bit 1/2 or full turn see if that frees it up
also check that your shifter external linkage at the riders left foot is not binding and is setup so when not shifting the levers and arms are close to 90 degrees this gives equal leverage/travel more or less up or down the gears
and you do need to rotate the trans output shaft while shifting if the engine is not running
 
Thanks for the replies. alzbz - i was thinking the input shaft needed to be moving, because when i turned it, i could get it to shift into the next gear after getting stuck at the false neutral.

I feel a lot better now. Looking forward to putting the engine back together now.
 
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