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I took my Z50AK4 outdoors today for the first time since September. I've done a complete top end overhaul. It's now running a CT70 cylinder, ATC70 head.
Still running on the original Z50 carb (barely), choke on, ok, mid choke poor, no choke = stall (no doubt carb is not large enough).
While running I found a few things:
Relatively difficult to turn over, is the CT70 Kicker a direct swap?
The exhaust needs more work (badly carboned up; smoke rolling out of it was insane! I thought the engine was coming apart! Removed exhaust to confirm. You're ideas to cure please)
There is a Squeaking sound in rhythm with engine rpm - The only time it's not present is while kickstarting, no air cleaner, throttle open, choke open? Thoughts?
Still running on the original Z50 carb (barely), choke on, ok, mid choke poor, no choke = stall (no doubt carb is not large enough).
While running I found a few things:
Relatively difficult to turn over, is the CT70 Kicker a direct swap?
The exhaust needs more work (badly carboned up; smoke rolling out of it was insane! I thought the engine was coming apart! Removed exhaust to confirm. You're ideas to cure please)
There is a Squeaking sound in rhythm with engine rpm - The only time it's not present is while kickstarting, no air cleaner, throttle open, choke open? Thoughts?