Snapper RTX102 Manual Do Utilizador página 97

BALANCING THE BLADES
Pay increased attention to levelling and balancing the blades. The vibration of blades that are not levelled and balanced may damage
the engine or the mowing deck.
When balancing, insert the screwdriver into the centring hole and set the blade into
a horizontal position. If the blade remains in this position, it is balanced. If one of the ends
is weighs down, grind this side until it is balanced. When balancing by grinding, do not
shorten the length of the blade! The permitted static imbalance may not exceed 2g.
If you are not certain about the procedure, please contact an authorised service centre, where they will gladly provide advice.
REPLACING BLADES
If due to frequent use the blades are damaged, they cannot be balanced or sharpened properly, it is necessary to replace them.
Proceed as follows:
► Remove the grass catcher, tilt the mower on to the right side and prop it up using suitable supports. It is recommended to invite
another person to help with tilting the mower in order to prevent damaging a part of the mower or an injury.
► Screw out both blades.
► Prior to installing new blades, check the condition of the break pins which serve as protection of the mowing deck. If the break
pins are damaged, replace them immediately.
► Check that the blades are balanced, see above.
► Screw on the new blades. During installation, ensure that the bend of the blades points upwards into the mowing deck body. Do
not interchange the left and right blades. The right blade has a bolt with a left thread.
► Carefully tighten the fastening bolts using a torque wrench using the prescribed tightening torque of
achieved the moment when the tangential (convex) spring under the fastening bolt is fully compressed and from this point on the
bolt is not tightened.
When the blades impact a solid obstacle, immediately stop the engine and check the blades! The break pins may be
damaged or broken.
Whenever handling the mowing blades, always use heavy-duty work gloves.
Always only use blades recommended by the manufacturer or supplier of the riding mower. The use of blades and/or
fastening parts that are not recommended may result in improper mowing results, damage to the mower and in the event
that they come off during operation also injury to people.
6.3.7 MOWING DECK - INSPECTION AND BALANCING
To achieve the best mowing results the mowing deck must be set at the correct mowing height and both sides of the deck must be
level.
Before carrying the adjustment:
► Place the mower on an optimally even surface, inflate all the tyres to the prescribed pressure (80 - 140 kPa, ± 10 kPa
difference between the individual tyres) and secure the entire mower against movement (e.g. using a suitable wedge, etc.).
► Move the mowing deck elevation adjustment lever to position 1.
The mowing deck is equipped with plastic covers which prevent hand access to moving parts and to the mower drive
parts of the mower.
The covers can be very quickly and easily removed using the quick coupling pins on the sides of the covers. Slide
a screwdriver into the pin groove and turn it anticlockwise. Then take the cover off the mower.
► Distance A is the front edge of the mowing deck in the travel direction and it must be 23-25 mm above the ground.
Check it on both sides of the mowing deck. If the height is different, loosen the lock nuts (2) on the respective draw
rod (1) and adjust the height by the turning nuts (3). After setting the correct height, do not forget to tighten the lock
nuts (2).
6.3.7
► Distance B is the rear edge of the mowing deck in the travel direction and it should be 28-30 mm above the ground,
i.e. the rear edge must be at least 5 mm higher than the front edge. If the height is different, adjust it by loosening
nuts (4), setting the edge to the correct height and tightening the nuts with a torque of 55 – 65 Nm.
If you are not certain about this procedure, have it performed by a service centre.
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30 ± 3 Nm. This torque is