Instruction manual

8
ENGLISH
EN
4WD 4000-series:
Grip the belt tensioner’s lever with your left
hand. Pull the lever and unhook with your right
hand. See fig. 7.
2000-series
:
Unhook the belt idler from the belt. See fig. 9.
7. Loosen the belt guide screws (21, 22:K) a
couple of turns and work off the belt from the
cutting deck’s pulley.
8. Force the belt off the deck’s pulley.
9. Grip the front edge of the deck and lift up. Lift
until the deck is completely vertical and rest the
rear edge on the ground. See fig. 17.
Reset the deck according to 3.1.
5.4 Service position,
2WD 4000-series
1. Activate the parking brake.
2. If the deck has electrical cutting height adjust-
ment, disconnect the cable from the machine.
See fig. 13.
3. Set the maximum cutting height.
4. See fig. 2. Detach the rear section of the deck on
the right and left-hand side as follows:
A. Lift up the left-hand rear section of the
deck slightly to reduce the load from the
cotter pin.
B. Remove pins and washer.
C. Remove the right-hand cotter pin and
washer in the same way.
5. Release the belt tension by unhooking the belt
idler from the belt. See fig. 9.
6. Force the belt off the machine’s pulley.
7. Grip the front edge of the deck and lift up. Lift
until the deck is completely vertical and rest the
rear edge on the ground. See fig. 17.
Reset the deck according to 3.2.
5.5 Cleaning
The underside of the deck must be cleaned after
each use.
Set the deck in washing position.
Clean the underside of the deck carefully. Use wa-
ter and a brush.
When the surfaces are completely dry and clean,
touch up the paintwork. Use durable yellow paint
intended for metal outdoors.
5.6 Blades
5.6.1 Safety
To reduce the risk of accidental injury in the event
of a collision and to protect important parts in the
cutting deck, a force limiter is integrated as fol-
lows.
• Shear bolts between blades and blade bar.
• Torque limiting between gear wheels and blade
shaft.
• Possibility of positive drive belt slipping on the
plastic gear wheels.
5.6.2 Replacing blades
Wear protective gloves when changing
blade(s) to avoid cutting yourself.
Check that the blades are always sharp. This pro-
duces the best cutting results. The blades should be
replaced once a year.
Always check the blades after a collision. If the
blade system has been damaged, defective parts
should be replaced.
Always use genuine spare parts. Non-
genuine spare parts can entail a risk of
injury, even if they fit the machine.
The blades are replaceable. When replac-
ing, both blades on the same blade bar must be re-
placed to avoid imbalance.
Attention!
Note the following when reassembling:
• The blades and blade bar must be installed as in
fig 18.
• The blades can be turned 1/3 of a turn in their
mountings. Select positions so that the blades
are offset 90° from each other. See “5.6.3” be-
low.
Tightening torque:
Screws (18:P) - 24 Nm
Shear bolts (18:Q) - 9.8 Nm
In the event of a collision, the shear bolts (18:Q)
can break and the blades bend back. If this has hap-
pened, install genuine shear bolts and tighten as
above.
5.6.3 Synchronising, blades
The deck has synchronised blades.
If one of the blades has struck a solid object (e.g. a
stone), the synchronisation may be altered. This
entails a risk of the blades colliding with each oth-
er.
Correctly synchronised blades must be offset 90°
from each other. See fig. 19.
Always check synchronisation after a collision.