FPM Agromehanika 627 678, Assembly / Operation/ Maintenance, Spare Parts List

Page: 24 / 62

ADJUSTING THE CUTTING HEIGHT
FPM Boljevac
The cutting height is adjusted by turning
the entire cutting unit along its roll axis.
This is performed by shortening or
extending the upper linkage (B; Fig. 43
and 44). Always perform the adjustment
operation carefully to ensure a clean cut
(Fig. 44).
NOTICE: IT IS EXTREMELY
IMPORTANT
NOT TO TURN THE CUTTING UNIT
WHEN ADJUSTING THE CUTTING HEIGHT
SO THAT THE CUTTERS HIT THE
GROUND DURING OPERATION. THIS
WILL DAMAGE THEM QUICKLY AND
SMASH THE ROOTS.
If the cutting unit hits a hidden obstacle
during operation, safety device (R)
triggers and detaches the cutting unit,
Fig. 45.
TO CONTINUE MOWING, STOP THE
TRACTOR AND SWITCH THE OUTPUT
SHAFT OFF.
Reverse the tractor slightly and raise the
mower using the linkages. Using a swinging
motion, draw the cutting unit towards the
tractor to reset the safety device in its
original (operating) position
.
WARNING: Check the safety device box for
proper lubrication. If necessary, apply
grease to all telescoping parts.
The safety device is factory-adjusted for
normal operating conditions and is triggered
only when the cutting unit collides with
hidden (solid) obstacles on the ground. For
four-disc mowers, the spring (B) has a size
(A) which is 102 mm (Fig. 45).
Should the adjustment of the safety device
at the user’s location be necessary in order
to adapt it to the local soil conditions, the
main principle is to adjust the safety device
spring not to trigger under normal working
conditions.
WARNING: DO NOT OVERTIGHTEN THE
SPRING.
ATTENTION:
ONLY OPERATE THE
MOWER WHEN THE PLASTIC COVER IS
INSTALLED. NEVER LIFT THE FRONT
END OF THE PLASTIC COVER.
Page 24