Ratio R-C900 Manual De Instrucciones página 34

NOTE: Do not over-loosen the screws. If the
screws are too loose, the alignment of the new
blade will not be accurate.
2) Before removing the old blades, take notice of
the direction of cut as well as how the tapered
edge of the old blades are oriented. The
tapered edge of the new blades must be in the
same orientation as the original blades.
3) Press the safety cover down with your finger.
Push the blade out with the tip of a spanner (or
a screwdriver) and then remove (See Fig. I2).
NOTE: There is no need to remove the blade
clamp as this will change the factory settings for
cutting blade height control.
NOTE: If a blade cannot be pushed out easily
after loosening the screws, use a piece of wood
to break the blade loose from the blade clamp,
with a short sharp blow. Then push with a
screwdriver to remove the blades. If necessary,
tap the piece of wood sharply with a small
hammer to break the blades loose.
4) Before reinserting a new or reverse blade,
always clean both the blade and the blade
seat if dirty. Slide the blade into the clamp with
a spanner (or a screwdriver) in the correct
orientation. Check the blade is level with the
clamp. Retighten the three blade screws with
the spanner.
5) Repeat the above procedure to change the
other blade.
6) After the blades are replaced, use a ruler to
check if the blades are parallelled with the rear
base plate. If not, you can adjust the blades
with the hexagonal wrench (not supplied).
Firstly loosen the three screws on the blade
clamp. Turn the socket head screw clockwise,
the blade will be risen. Turn it anticlockwise,
the blade will be lowered down. Finally
retighten the three screws fully (See Fig. I3,
I4).
I1
34
I1
I2
I3
I4
7. CORRECT PLANER BLADE SETTING (SEE
FIG. J)
Your planing surface will end up rough and
uneven, unless the blade is set properly and
securely.
The blade must be mounted so that the cutting
edge is absolutely level, that is, parallel to the
surface of the rear base. Fig. J shows some
examples of proper and improper settings.
(A) Front base (Moveable shoe)
(B) Rear base (Stationary shoe)
1) Correct setting
Although this side view cannot show it, the edges
of the blade run perfectly parallel to the rear base
surface.
2) Nicks in surface
CAUSE: one or both blades fails to have edge
parallel to rear base line.
3) Gouging at start
CAUSE: one or both blade edges fails to
protrude enough in relation to rear base line.
4) Gouging at end
CAUSE: one or both blade edges protrude too
far in relation to rear base line.