Removing or installing blades
If the mower blades need to be removed, do the following:
1. the blades rotate in a
clockwise
direction viewing the mower, when lifted, from
the rear. The blades must be mounted with the cutting edge in the direction of
rotation and the lift wing edge towards the bottom of the deck
(see fig. 8)
.
2. Insert the blade bolt through the blade and then through the spindle, taking care
to assemble it as described above
(see fig. 8)
. Screw on the lock nut.
3. Tighten the lock nut to 145 N.m. (105 lb.ft.).
4. To remove the blades, reverse the procedure.
WARNING: do not substitute blades or any bolt for the blade retaining bolt.
Company blades and blade retaining bolts are specially made for this application.
Using non original parts can effect the quality of cut and may also cause damage
to the mower.
DANGER: proper torque must be used when tightening the blade retaining bolt. If
these safety precautions are not followed, the blade could come off during opera-
tion and be thrown tens of meters from the mower.
Sharpening Blades
Blade sharpening is extremely important in order to get the best cutting results. Sharp
blades permit a high quality cut and also reduces HP thus lowering cost.
To sharpen blades, first remove them following the above instructions.
Place the blade in a vise and sharpen them by using a hand file or grinder.
Do not
sharpen the blades to a sharp cutting edge.
The cutting edge should be between 0.5
to 0.6 mm. (
1
/
64
" to
1
/
32
") to prevent excessive pitting and dulling of the blades. Sharpen
each end of the blade equally for balance and always maintain corners. Always keep all
six blades sharpened equally in order to maintain balance.
CAUTION: unbalanced or warped blades can cause damage to the mower and/or
personal injury. Replace damaged blades before operating the mower. Sharpen
each end of the mower blades equally or until the blades are balanced.
CYCLONE 'C70'
OPERATOR'S MANUAL
MAINTENANCE
25
ROTOMEC
