Originally Posted by
HillRider
The closest remover type to that I know about is the old Sun Tour 2-prong but I can't tell if the diameter and notch width are a match. Take it to an older bike shop and have them try-fit one. As mentioned above, those pinholes are to remove the outer ring for disassembly, not removal of the entire freewheel.
Destructive removal can be done by using the pinholes to unthread that ring (it may be left-hand threaded), pulling the cog and outer body and bearings off the stationary core and using a pipe wrench on the core to unthread it. All of that is followed by buying a new freewheel.
I've got the Suntour removal tool, and the lugs are much larger than the square notches on this FW's inner ring.
A pinwrench could fit those notches, as well as the dimples in the cover disc. However, as I reported earlier, another poster successfully and non-destructively removed a similar single-speed FW by tapping on the notches in a counter-clockwise direction with a punch and hammer. No special tool needed, apparently.
OP, the most likely scenario requiring removal of this item would be failure of the internal mechanism. That happened to me on a multi-cog FW. Otherwise, installing it is best done with a chain-whip, or just install finger-tight and go for a ride.