I am looking to retrofit an old 53FZ to include the ''newer'' low speed needle adjustment screw.Â* Looking at parts explosions between the two versions, seems I could retrofit my older 53FZ to include the ''newer'' low speed needle adjustment screw. Can this be done by replacing the throttle barrel and adding the needle? Do I need anything else?
F5152 Throttle Barrel
F5186 Low Speed Needle
F5187 Low Speed Needle O-ring
Now for the longer ranting story ...
The below all happened in a one month period of flying twice a week a YS FZ53 on a SIG something extra:
1) a split fuel tank - replaced but fuselage is oil soaked
2) a failed front bearing - replaced/rebuilt
3) a cracked diaphragm - ordered from you replaced
4) But, still constant deadsticks and/or zero throttle transition response coming up from idle
This engine did my SIG something extra in last week. It did not survive the last zero throttle response after idle. Unfortunately, the 53FZ did survive :O()
So, I am once again plagued with fixing this ******* into working condition once again if it weren't so powerful, I'd rather sledge hammer it.
No one at my flying field will ever buy a YS with my recent escapades flying a 53FZ; only confirms the ''finicky'' reputation of these engines. Also seems to be zero existance of a manufacturer's website for them.