CONTENTS
SPECIFICATIONS ______________ 6
General specifications . . . . . . . . . . . . 6
Dimensions . . . . . . . . . . . . . . . . . . . . 10
Wiring diagram . . . . . . . . . . . . . . . . . 10
Summary of tightening torques . . . . 26
Maintenance schedule . . . . . . . . . . . 28
Times taken for repair. . . . . . . . . . . . 32
Precautions while working . . . . . . . . 36
Slings . . . . . . . . . . . . . . . . . . . . . . . . 36
Lifting . . . . . . . . . . . . . . . . . . . . . . . . 36
Vertical positioning . . . . . . . . . . . . . . 38
Special tools . . . . . . . . . . . . . . . . . . . 40
Summary of main fitting and
checking values . . . . . . . . . . . . . . . . 42
MAINTENANCE _______________ 44
Blade engagement . . . . . . . . . . . . . . 46
Drive and brake engagement
(mechanical drive models). . . . . . . . 48
Transmission chain . . . . . . . . . . . . . 50
Making the cutting deck parallel . . . 52
Adjustment of steering allowance . . 54
Adjusting the geometry of the
front axle . . . . . . . . . . . . . . . . . . . . . . 56
Checking blade alignment . . . . . . . . 58
Sharpening and balancing
of the blades . . . . . . . . . . . . . . . . . . . 60
Brake adjustment (Hydrostatic
drive models) . . . . . . . . . . . . . . . . . . 62
4.10 Drive belt adjustment (Hydrostatic
drive models) . . . . . . . . . . . . . . . . . . 64
4.11 Drive pedal adjustment (Hydrostatic
drive models) . . . . . . . . . . . . . . . . . . 66
REMOVING EXTERNAL PARTS
AND MAIN ASSEMBLIES _______ 68
Removal of front hood . . . . . . . . . . . 68
Removal of the wheel cover . . . . . . . 70
Removing the discharge conveyor . 72
Removal of rear plate . . . . . . . . . . . . 74
Removal of fuel tank and dashboard. . 76
Removal of the engine . . . . . . . . . . . 78
Removal of the cutting deck . . . . . . 80
Removal of the pump (Hydrostatic
drive models) . . . . . . . . . . . . . . . . . . 82
Replacement of tyres and wheels . . 84
Replacement of front wheel
bearings . . . . . . . . . . . . . . . . . . . . . . 88
Dismantling steering pinion and
ring gear . . . . . . . . . . . . . . . . . . . . . . 90
Replacement of drive belt. . . . . . . . . 92
Replacement the blade
transmission belt . . . . . . . . . . . . . . . . 94
Replacing of the blade connection
belt. . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Dismantling rear wheel axle . . . . . . 100
Replacing of lifting ropes . . . . . . . . 102
Replacement of blade
engaging cable . . . . . . . . . . . . . . . . 104
6.10. Replacement of the throttle lever . . 104
6.11. Replacing the blade drive shafts . . 106
6.12 Replacing the chain tensioner (from
serial n° 8611667) . . . . . . . . . . . . . . 110
ELECTRICAL SYSTEM ________ 112
Guide to the identification of
problems in the electrical system. . 112
Summary table of the security
device interventions . . . . . . . . . . . . 120
Checking the operation of safety
switches and fuel and oil indicator
lights . . . . . . . . . . . . . . . . . . . . . . . . 122
Terminal board supply check . . . . . 124
Lights operation check . . . . . . . . . . 124
Checking the operation of
the starter relay . . . . . . . . . . . . . . . . 124
Electronic card operation check. . . 126
Recharge circuit check . . . . . . . . . . 128
Carburetor solenoid operation
check (HF2218 only) . . . . . . . . . . . 128
7.10. Attaching security microswitch . . . . 130
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