When I checked the site again the other day, the manual wasn’t available.
It’s all messy and the images are a bit sparse. The linkage is set up a bit strangely, and getting the carb synchronization and throttle valve position right was somewhat novel.
I didn’t quite understand the logic, so I checked the service manual again, but it’s pretty rough and I just have to proceed while understanding the structure.
The idle screw engagement is really just barely there.
Taking into account the synchronization height and the balance of idle adjustment, synchronization won’t hold / idle is too high / idle can’t be adjusted and other issues could arise, so I need to be careful.
The throttle valves are almost completely shot.
Whether it was because I wanted to synchronize according to the manual or because the throttle valve damage was severe.
I check the height with the one that has the slit, so what happened???
Borrowing a throttle valve from the parts donor.
I’m writing it pretty simply, but the throttle valve is corroded and won’t come out,
and on top of that the linkage bolt is seized and broken—a truly godlike situation. This Z-series VM carb leaves me with nothing but bad impressions… I still have to check the VM on the Z1R, so I’m feeling heavy about it…
For now it’s assembled and I checked the actual fuel level.
I didn’t want to waste the float valve, so I just lapped it and reused it. The fuel level height was fine, so I’m relieved.
I started the engine and got the synchronization perfectly dialed in.
The idle is also stable and it’s in a really nice condition. The full throttle stopper was engaging at a halfway point and wouldn’t open fully. I adjusted that too, so now it should rev all the way to the red line on the tachometer.
Old motorcycles are scary, scary—caution is necessary.
The center stand stopper should be black, so I painted it with gun coat. I installed it first thing in the morning and cracked it wide open while there was still time.