[GreenKeys] M15 How to disable unshift-on-space?

[Jim Haynes]

All the 15s I've ever seen have a screw-type fuse holder on the base
and the correct fuse is - well now the parts book shows three different
ones, all Fusetrons, 3.2A, 1.6A, 0.8A  Fusetrons are slow-blow types
with the standard screw base.  You won't find those values at Home
Depot!  Then there are Fusestats, which are the same kind of fuse
element but have a special screw base so you can't put a higher-
amperage one in place of a lower-amperage one.  And there are adapters
so you can put a Fusestat into a regular screw base - these have a
spring prong so once you have screwed one in you can't get it back out.

I don't see anything in the parts book about which fuse amperage
goes with which motor.  I seem to recall that 3.2A is usually found
in units with sync motors.