Stiga TC 108 SD, Руководство по ремонту, Страница: 21 / 79

WORKSHOP MANUAL
TC 108 SD - TC 118 SD
Important informations
Characteristics of the original blades
The original blades have design, material and
processing characteristics optimised for use on
the equipment for which they were designed; these
characteristics are not present in so­called “com­
patible” spare parts.
Here are the reasons why it is important to choose
an original blade, useful when making such deci­
sions.
a) No breakage of the blade
ends. Using steel balls, the manu­
facturer simulates what can hap­
pen when mowing over any foreign
bodies on the lawn. This can ruin the blade edge,
but no component can come loose, fall off or be
hurled away.
b) No breakage of the blades.
The impact test is the most severe
durability test that any lawnmower
can be subjected to. An iron tube is
placed exactly inside the blades when the mower
is running. The blade may deform but it will never,
under any circumstances, fall off or break. This test
verifies that blades and other components meet the
high safety requirements.
c) Excellent cutting result. The
blades and blade ends supplied
by the authorised dealer are opti­
mised for the application for which
they are intended. In short, this means that the
blades are suitable for the shape of the casing and
to the number of revolutions to provide the best
possible cutting result.
3. Cutting deck
Problem Probable cause Solution
The blades do not
engage or do not
stop promptly within 5
seconds when they are
disengaged
Slack belt Adjust the engagement [4.1]
Incorrect adjustment of the
engagement spring
Adjust the engagement [4.1]
Electromagnetic engagement
problems
Check and/or replace [7.7]
Uneven mowing
Cutting deck not parallel to the
ground
Check the tyre pressures [6.1]
Align the cutting deck with the ground
[4.5]
[4.5a]
Blades cutting badly
Check their condition and that they are
well sharpened
[4.9]
Misaligned blades Check the blade shafts and flanges [4.8]
Abnormal noise or vibra-
tions
Loose joint bolts and screws Check and adjust [5.6]
Pulleys or guide pulleys are
worn and do not rotate correctly Check and/or replace
–
4. Steering
Problem Probable cause Solution
Excessive clearance on
the steering wheel
Worn pinion and crown teeth Adjust and/or replace
[4.6]
[6.3]
The machine does not
maintain a straight line
when the steering wheel
is straight
Incorrect tie-rod adjustment Adjust [4.6]
TROUBLESHOOTING AND REMEDIES
CHAPTER REVISION FROM ... PAGE
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