tighten the two retaining screws (M8) (# 3.1) to
approx. 23 Nm.
now, after disassembling the center, the "Flipper" can be
reassembled - the holder does just fine without this cut-off
guide bush.
one more thing.
the retaining bolt (# 20) for the center can usually only be
got in if the rear bolt of the exhaust manifold (and
therefore also the muffler) of the original exhaust manifold
system is removed and the manifold a bit pressed down.
use a sturdy lever and use force to bend the manifold
downwards so far that you can now push the stop bolt (# 20)
in and then tighten the metal self-locking (s.s.) nut (21)
with approx. 25 Nm.
(the "right" value cannot be found anywhere in the manual)
however, if a 4-1 is installed, it is of course super easy -
"flipper" off, insert center with its two sleeves / bushes
and screw in the long bolt (# 14) and the center is ready
for use.
the center´s springs are not needed in the workshop - so
everything is mega easy.