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2) FITTING THE BLADES
a) POWER TILLER with standard diameter C- blade rotor
(fig. 54 and photo 55)
The blades can be fitted in two different ways, depending on the job to get done :
- 3 pairs of blades per flange
3 right blades (D) and 3 left blades (G) (as fitted at factory)
- 2 pairs of blades per flange
2 right blades (D) and 2 left blades (G)
To recognise if blades are right or left, point the cutting
edge in the direction of rotation (F) and note the
direction of their curved portion.
A = machine forward direction
To fit blades helicoidally, proceed as follows :
- Always start fitting each flange with a left blade,
placing it opposite mark (R), shown by a chamfer or
a hollow (see fig. 54) ;
- all blades should be fitted on the left face of the
flanges (see photo 55).
- Fixing bolt heads should face the blades, washers
and nuts should face the flanges.
End blades
: depending on the way the blades have
been fitted (2 or 3 pairs of blades per flange), the left
MODEL
250
300
Number of rotor flanges
11
13
TYPE OF
TYPE OF
NUMBER OF
FORMATION
BLADES
BLADES
2 pair
RIGHT
20
24
formation
LEFT
20
24
3 pair
RIGHT
30
36
formation
LEFT
30
36
NUMBER OF BLADES
55
54
end flange is fitted with 2 right blades diametrically opposite to each other or 3 right blades. Likewise, the right end
flange will be fitted with 2 left blades diametrically opposite to each other or 3 left blades (photo 55).
Tighten nuts to a torque of 30 daNm / 220 ft.lbs
.
