As noted in the title, I have a 1984 ZN1100 with about 42,000 Kms on it.
While tuning the carbs and with the RH side ignition cover removed, I was horrified when I noticed the ignition rotor was drifting in and out by about 1/8" (3mm). I checked the rotor bolt and it was tight. I removed the rotor and all looked fine.
With the engine turned off, I cannot duplicate the drift by pulling or pushing on the rotor. Clearly there is too much resistance unless the engine is running.
Since the rotor bolts directly onto the end of the crank, it must be the crankshaft that is drifting... YIKES!!!
So, because I have never torn down any Kawi 4 cylinder engine down to the crankshaft, I need input from anyone with this experience. What controls end float of the crankshaft and why is mine drifting so much?
I should add that the bike runs fine and sounds good, but this much end float CANNOT be normal. I am stumped.
While tuning the carbs and with the RH side ignition cover removed, I was horrified when I noticed the ignition rotor was drifting in and out by about 1/8" (3mm). I checked the rotor bolt and it was tight. I removed the rotor and all looked fine.
With the engine turned off, I cannot duplicate the drift by pulling or pushing on the rotor. Clearly there is too much resistance unless the engine is running.
Since the rotor bolts directly onto the end of the crank, it must be the crankshaft that is drifting... YIKES!!!
So, because I have never torn down any Kawi 4 cylinder engine down to the crankshaft, I need input from anyone with this experience. What controls end float of the crankshaft and why is mine drifting so much?
I should add that the bike runs fine and sounds good, but this much end float CANNOT be normal. I am stumped.