Willis WST12MC16S Service Manual page 57

Removal Procedure
6. Remove the
Vertical blade
Unfasten the hooks at
1
the upper 2 positions.
Unfasten the 3 hooks at
2
the shaft mounting part
by pressing them with a
flat screwdriver.
Remove the vertical
3
blade.
Hooks
Hooks
Vertical blade
A set of vertical blade has 6
fins as on ASSY.
(It is impossible to replace
only one fin.)
The set of vertical blades is
not marked for difference
between right and left.
Repeat the same procedure
to remove the vertical blade
on the other side.
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