4.7 STEERING GEOMETRY ADJUSTMENT
The correct steering geometry is given by the val-
ues of the interacentre distancexis between the
joints of the tension rod and the wheel connecting
rod. Any faults caused by knocks or accidents
result in reduced driving precision and increased
wear on the tyres. These can be overcome as fol-
lows:
– uneven or excessive wear on the front tyres =
toe-in adjustment
– the lawn-tractor does not maintain a straight
line when the steering wheel is straight =
adjustment of tie-rods.
NOTE
Before any other action, check that the joint fasten-
ings have not become loose.
A) Toe-in adjustment
The exact toe-in is obtained with a track of 483-485
mm, measured between the centres of the pins
(1)
of the wheel connection rod
(2)
.
If a different value is detected, suitably adjust the
nuts and locknuts
(3 – 4)
, from one or both sides,
screwing them in or out on the rod by the amount
needed.
Having made the adjustment check that the nuts
and locknuts
(3 – 4)
are fully tightened.
B) Adjustment of the steering wheel
First check the toe-in (point “
A
”) and align the front
wheels.
If the steering wheel is not straight, suitably adjust
the nuts and locknuts
(5 – 6)
, screwing them in or
out on the rod
(7)
by the amount needed.
Having made the adjustment check that the nuts
and locknuts
(5 – 6)
are fully tightened.
Tightening torques
3 - 4 - 5 - 6
Nuts and Locknuts .......... 18 ÷ 20 Nm
4/2007
7
5
6
2
3
1
4
1
483 - 485 mm
2
1
© by GLOBAL GARDEN PRODUCTS
N...92
WORKSHOP MANUAL
STEERING GEOMETRY ADJUSTMENT
4.7
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