FPM Agromehanika 627 113C, User Manual And List Of Spare Parts

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5.2.2 Adjusting the cutting height
The cutting height is adjusted by rotating the entire cutter bar around
the longitudinal axis. This is achieved by shortening or lengthening
the coupling length (B) (figures 43 and 44). This adjustment should
be carried out very carefully in order to achieve a proper cut while
mowing (figure 44).
5.2.3 Safety device
The safety device is by default properly set for working under nor-
mal working conditions, and is activated only when the cutter bar
encounters hidden (hard) obstacles in the ground. For mowers with
four discs, the spring (B) is set to the measurement (A) which equals
102 mm (figure 45).
For mowers with five, six, seven, or eight discs, the safety system is
configured using plate springs to the length of 94 mm, shown as Y
on figure 46.
If there is a need to exceptionally modify the safety device for the
user in order to adapt it to local conditions, the main principle is that
the safety device spring must be adjusted in such a way as not to be
activated under normal working conditions.
NOTE:
CHECK THAT THE SAFETY DEVICE CASING IS OILED. IF NOT,
OIL ALL SLIDING PARTS WITH TECHNICAL OIL.
If the cutter bar hits a hidden obstacle while in operation, the safety
device (R) is activated which detaches the cutter bar (figure 45).
Then take the tractor a little in reverse and lift the mower using the
tractor levers. Swing the cutter bar towards the tractor, which will
restore the safety system to the original, working position.
5.2 Swath-former
For proper setting of swath shape and mowed mass flow, it is neces-
sary to loosen or tighten the coil spring (A) (figure 53). In case of more
difficult working conditions, the swath-former angle must be greater
in relation to the cutter bar (as close to 90° as possible).
CAUTION!
IT IS VERY IMPORTANT TO ADJUST
THE CUTTER BAR WHILE ADJUSTING THE CUTTING
HEIGHT SO THAT THE BLADES DO NOT HIT THE
GROUND DURING OPERATION. OTHERWISE, THE
BLADES WILL QUICKLY GET DAMAGED, AS WILL
THE ROOTS OF PLANTS. PAY SPECIAL ATTENTION
IF YOU ARE WORKING ON UNEVEN GROUND.
CAUTION!
NEVER TIGHTEN THE SPRING TOO
MUCH IN ORDER FOR THE SAFETY DEVICE TO
WORK PROPERLY.
CAUTION!
WHEN THE SAFETY DEVICE ACTI-
VATES, IMMEDIATELY STOP THE TRACTOR AND
TURN OFF THE OUTPUT SHAFT.