Grillo FD 450 - Driving Belt Maintenance

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is correctly connected.
A
Fig. 52
C
B
Fig. 53
D
E
Fig. 54
Fig. 55
sharpening the blades
An unsharpened blade tears up the grass, giving the lawn an unsightly
appearance. It is necessary that sharpening is always carried out on the
cutting edges of all blades evenly. Also, if the blades do not cut properly,
they tend to become unbalanced, causing the lawnmower to vibrate.
CAUTION:neverattempttorepairdamagedblades.Damaged
blades must be replaced.
Pay attention to the direction of rotation and correct assembly of the
blades(g.56).
IMPORTANT:thecentralboltoftheright-handblade(looking
fromthedriver’sseat)hasaleft-handthread.Thetighteningtorque
ofthebladecentralxingboltis53Nm.
53 Nm
53 Nm
53 Nm
Fig. 56
16.5 DRIVINGBELTMAINTENANCE
IMPORTANT:onlyusegenuinebelts.
replacing the pto belt
To replace the PTO belt:
1. Remove the guard above the cutting deck by unscrewing the two
knobs(g.52/A);
2. Removethecotterpin(g.53/B);
3. Loosen the belt by turning the lever on the tensioner anti-clockwise
(g.53/C);
4. Remove the belt and replace it;
5. Reposition the belt on the pulley at the clutch side, checking that it
passesbetweenthebracketandtheroller(g.57);
6. Tension the belt by turning the lever on the tensioner clockwise;
7. Fit the cotter pin;
8. Rettheguardoverthedeck.
IMPORTANT: the PTObeltdoesnotneedadjustmentasitis
self-adjusting.
Fig. 57