57
7. REPAIRING MALFUNCTIONS AND DEFECTS
Do not perform any repairs if you do not have the appropriate technical equipment and qualifications.
The repairs described below may be performed by the user of the machine. Other repairs performed by
the user that are not specified here will void the warranty. The manufacturer takes no responsibility for
damages resulting from poorly performed unapproved repairs by the user.
Malfunction, defect
Remedy
The mowing deck
mows unevenly
X
Remove grass that has accumulated on the underside of the mowing deck.
X
Make sure that the blades are sharp and not deformed.
X
Check than the blades are tightened.
X
Check the mowing deck elevation setting (
6.3.7
)
. If it is not correct, readjust.
X
Check the drive belt tension
6.3.8
). If necessary adjust the tension.
X
Check than the blades are tightened. Replace them if they are damaged or overly worn.
An unmowed strip
remains between the
blade rotors
X
Check the bearing housings for damage. Based on your findings either repair or replace them.
When mowing thick grass or grass that is too wet, an unmowed strip may remain. The travel
speed should be adjusted to respect the mowing conditions by shifting into a suitable gear. The
engine should not run with the throttle valve fully open.
X
Check that the blades are sharp and undamaged. Replace the blades if necessary.
The mowing deck is
ripping out turf
X
Check the drive belt tension (
6.3.8
). If necessary adjust the tension.
X
Check the bearing housings for damage. Based on your findings either repair or replace them.
X
Check the mowing height and adjust if necessary. Turf is ripped out more frequently on uneven
terrain.
X
Check whether the blades are bent. Replace the blades if necessary.
The mowing deck does
not eject grass
X
Remove grass that has accumulated on the underside of the mowing deck. In wet conditions, the
ejection chute and the lower side of the outlet from the mowing deck may clog up with grass.
Do not mow wet grass.
X
The travel speed should be adjusted to respect the mowing conditions by shifting into a suitable gear.
The engine should not run with the throttle valve fully open. When mowing high grass, first mow once
at a high mowing height, then once more at the normal height. Follow the information in chapter
5.5.3
.
X
Check the drive belt tension (
6.3.8
). If necessary adjust the tension.
X
Check, particularly after replacing blades, that the blade is installed correctly.
The mowing deck
drive belt stops during
operation
X
The mowing deck drive belt may be damaged, when it jumps out of the pulley while the machine
is running. If it jumps out even after rechecking according to the following steps, it is necessary
to replace the belt.
X
Check the belt tension (
6.3.8
). If necessary adjust the tension.
X
Check the route of the belt.
X
Check the set mowing height, adjust if necessary.
X
Check whether the movement of the belt is not prevented by a foreign object. If yes, remove
the foreign object.
X
Inspect all belt pulleys. Buckled or cracked pulleys may cause problems. Replace if necessary.
X
Check the inside surface of the pulley on the engine. If it is coarse or has cracks, it is necessary
to replace the pulley.
X
Check the parts of the tensioning mechanism for wear, replace the worn out parts if necessary.
The mowing deck drive
belt is slipping through
X
If the grass is too tall or wet, the mowing deck drive belt may slip through. Check that the belt
is not worn out. If it is, replace it.
X
Check the belt tension (
6.3.8
). If necessary adjust the tension.
X
Check the tensioning spring of the mowing belt tensioning mechanism. Replace the spring if it
is overstretched or damaged.
The mowing deck
drive belt is being
excessively worn out
X
Check all the points along the route of the belt. Check whether the movement of the belt is not
prevented by a foreign object. If yes, remove the foreign object.
X
Check the belt pulleys, if they are damaged, replace them.
X
Check the set mowing height, adjust if necessary.
X
Check the belt tension (
6.3.8
). If necessary adjust the tension.
The blades cannot be
put into motion
X
Check that the belt is not worn out or damaged. If it is, replace it. If it is loose, tension it.
X
Check the tensioning mechanism spring. Replace the spring if it is cracked or damaged.
X
Check whether the movement of the belt is not prevented by a foreign object. If yes, remove
the foreign object.
The blades stop with
a delay
X
Check the belt tension (
6.3.8
). If necessary adjust the tension. If the belt can no longer be
tensioned due to its considerable wear, replace the belt.
X
Check whether the movement of the belt is not prevented by a foreign object. If yes, remove
the foreign object.
X
Check that the electromagnetic clutch switches off properly. If the clutch is not working properly
have it replaced or repaired at an authorised service centre.
Summary of Contents for EF 92
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