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Global Garden Products Lawn Mower 92 92 Hydro Instructions Manual

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    							4/2005
    When assembly is completed …
    Refit the fuel tank [ see 5.4].
    Tightening torque
    5Nut for ring gear  ............................. 45 ÷ 50 Nm
    92
    4.7.1
    STEERING ALLOWANCE ADJUSTMENT 
    
    
    
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    WORKSHOP MANUAL
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    © by GLOBAL GARDEN PRODUCTS 
    						
    							4.8 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
    An exact toe-in is achieved with an centre distance
    of 461 mm which is measured between the centres
    of the articulated joints 
    (1)of the wheel connection
    rod 
    (2). If a different distance is found, dismantle
    one or both the joints and screw the necessary
    amount down or up on the rod.
    On assembly, fully tighten the locknuts 
    (3)and the
    fastening nuts 
    (4) of the joints.
    B) Adjustment of the steering wheel
    Firstly check the toe-in (point “A”) and align the
    front wheels.
    If the steering wheel is not straight, dismantle the
    articulated joint 
    (5)and screw down or up on the
    tie-rod 
    (6)for the necessary amount.
    On assembly, fully tighten the locknuts 
    (7)and the
    fastening nuts 
    (8)and check that the tie-rod, in its
    travel, 
    does not interfere with parts or acces-
    sories of the engine
    even with the equaliser (9)
    angled in both directions.
    Tightening torques
    3 - 7Locknuts for articulated joints  .... 25 ÷ 30 Nm
    4 - 8Nuts for articulated joints ............ 45 ÷ 50 Nm
    3/2002
    576
    89
    2
    3
    1
    4
    1
    461 mm
    2156
    92
    4.8.0
    STEERING GEOMETRY ADJUSTMENT
    
    
    
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    WORKSHOP MANUAL
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    © by GLOBAL GARDEN PRODUCTS 
    						
    							© by GLOBAL GARDEN PRODUCTS
    92
    4.9.0
    CHECKING BLADES ALIGNMENT
    
    
    
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    4.9 CHECKING BLADES ALIGNMENT
    Excessive vibration when cutting and an uneven
    cut can be due to misalignment of the blades
    owing to deformation of the flanges or the shafts
    as a result of accidental knocks.
    Put the lawn-tractor into a vertical position
    [see 2.4].
    Always wear strong gloves when handling the
    blades.
    With the blades disengaged, firmly hold each blade
    and bring the cutting edges together in the various
    positions possible (A-B; A-B1; A1-B1; A1-B). At
    each position they should be aligned to within 2
    mm.
    If higher amounts are found, check that the blades
    are not distorted. If this is not the case, check the
    supports or the shafts for the blades [see 6.9],
    replacing if necessary, and check the condition of
    the point where the flange rests on the cutting deck.
    IMPORTANT!
    Always replace damaged blades and do not
    attempt to repair or straighten them. Always use
    manufacturer’s genuine spare parts!
    3/2002
    A
    A1B
    B1
    < 2 mm 
    						
    							4.10 SHARPENING AND BALANCING OF THE
    BLADES
    A badly sharpened blade causes grass to
    become yellow and reduces grass collection
    capability. If not balanced, excessive vibration
    can be caused during use.
    Always wear protective gloves when handling
    the blades and protect eyes when sharpening.
    For removing a blade it must be firmly held and the
    central screw 
    (1)undone, bearing in mind that:
    –the screw on the left blade 
    (1a)is unscrewed
    anti-clockwise
    –the screw on the right blade
    (1b)is unscrewed
    clockwise.
    A) Sharpening
    Always sharpen both cutting edges of the blade (2)
    using a medium grade grinder. Sharpening must
    only be done from the rounded side, removing as
    little as possible.
    The blade is to be replaced when the cutting edge
    has worn down to 10 mm.
    B) Balancing
    Using the appropriate equipment, check the bal-
    ance to make sure that there is a maximum differ-
    ence of 2 grams between one side and the other.
    On reassembly, be sure to position the right and left
    blades correctly, as well as that the splines 
    (3)are
    correctly positioned on the shafts, the wings on the
    blades are turned towards the inside of the deck
    and that the concave part of the spring disc 
    (4)is
    pressing against the blade.
    Tightening torques
    1aScrew for left blade  ...................... 45 ÷ 50 Nm
    1bScrew for right blade .................... 45 ÷ 50 Nm
    1b4
    1a422
    3
    2
    4
    1a - 1b
    3/2003
    2
    2
    max 10 mm
    1a2
    1b
    2
    92
    4.10.1
    SHARPENING AND BALANCING OF THE BLADES
    
    
    
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    WORKSHOP MANUAL
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    © by GLOBAL GARDEN PRODUCTS 
    						
    							© by GLOBAL GARDEN PRODUCTS
    92
    5.1.1
    REMOVAL OF FRONT HOOD
    
    
    
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    WORKSHOP MANUAL
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    5.1 REMOVAL OF FRONT HOOD
    The removal of the front hood gives greater
    accessibility to:
    –the engine and its accessories
    –the silencer and protection devices
    ➤In models with lights:
    Disconnect the connector (1).
    The hood can be secured in two ways.
    A) Fixing with springs
    Unhook the two fastener springs (2)and pull out the
    pins 
    (3).
    B) Fixing with a split pin
    Take out the split pin (4)from the right-hand side
    and remove the hood by moving it to the right.
    4/2005
    4
    1
    23 
    						
    							5.2 REMOVAL OF THE WHEEL COVER
    Removing the wheel covers gives access to:
    –the mount for the lever to raise the deck;
    –the supports of the footboards.
    Take off the spring (1)which holds the battery, tak-
    ing care to prevent it accidentally short-circuiting.
    Disconnect and remove the battery 
    (2).
    ➤In mechanical drive models: unscrew the
    knob from the blade engagement lever 
    (3)and
    the knob from the gear lever 
    (4).
    ➤In hydrostatic drive models: unscrew the
    knob from the blade engagement lever 
    (3)and
    the drive pedal 
    (5).
    Remove the caps 
    (6)from the springs and undo the
    screws inside 
    (7). 
    Remove the seat after having taken out the two pins
    (9).
    The cover 
    (10)is held by a screw at the front (11),
    four screws 
    (12)at the bottom of the dashboard
    10
    11
    5
    9
    9
    4
    3
    12
    6
    7
    4/2005
    92
    5.2.1
    REMOVAL OF THE WHEEL COVER
    
    
    
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    WORKSHOP MANUAL
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    © by GLOBAL GARDEN PRODUCTS 
    						
    							support and six screws (13)under the side foot-
    board. The two back ones 
    (13a) of these last
    screws have a washer.
    When the cutting height lever has been moved to
    position «7» and the engage lever to the «blades
    engaged» position, it is possible to remove the
    cover.
    4/2005
    10
    1313
    13a
    12
    92
    5.2.1
    REMOVAL OF THE WHEEL COVER
    
    
    
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    WORKSHOP MANUAL
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    © by GLOBAL GARDEN PRODUCTS 
    						
    							© by GLOBAL GARDEN PRODUCTS
    92
    5.3.0
    REMOVAL OF THE COLLECTOR CHANNEL
    
    
    
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    5.3 REMOVAL OF THE COLLECTOR CHANNEL
    Removing the collector channel gives access to:
    – the deck lifting cable;
    – the small side wheels of the drive belt;
    – the control rod for engaging drive and the
    micro-
    switch to signal «neutral» ( 
    ➤in hydrostatic drive
    models).
    Undo the two screws (1)the hold the support for
    the ‘sack full’ signal microswitch, undo the inside
    screws 
    (2)fixing onto the rear plate and take out the
    channel 
    (3).
    When reassembling, fully tighten the screws 
    (2)and
    make sure that the collector channel moves freely.
    Tightening torque
    2Screws for collector channel .......... 25 ÷ 30 Nm
    3/2002
    3
    1
    1
    23 
    						
    							5.4 REMOVAL OF THE FUEL TANK
    Removing the fuel tank gives access to:
    –the steering wheel column and the ring gear;
    –the brake adjustment spring 
    (➤in mechanical
    drive models)
    ;
    –the accelerator fastening screws.
    Completely empty the tank through the pipe at the
    entry to the fuel filter 
    (1), taking care not to spill
    fuel
    .
    Remove the electronic card, take off the lower part
    of the protective cover 
    (2).
    Loosen the screw 
    (3)holding the support (4)and lift
    the tank until the two pegs 
    (5) come out of the lower
    support.
    On reassembling, remember to fit the clamp back
    on the fuel pipe and 
    check that it does not leak.
    4/2005
    4
    3
    5
    2
    1
    92
    5.4.1
    REMOVAL OF THE FUEL TANK
    
    
    
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    WORKSHOP MANUAL
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    © by GLOBAL GARDEN PRODUCTS 
    						
    							5.5 REMOVAL OF THE ENGINE
    Since there are different types of drive, the stages
    described here refer to those shared or similar in
    all types of engine.
    Remove the front hood [see 5.1].
    Disengage the blades to loosen the belt. In order to
    have better access to the parts concerned, also the
    drive belt should be loosened.
    This is done by ...
    ➤In mechanical drive models: engaging the
    parking brake
    ➤In hydrostatic drive models: loosening the
    nut 
    (1)of the stretcher.
    Loosen the screw 
    (2), unfasten the safety pin (3)
    and move the fork to the side (4).
    Turn the belt shifter 
    (5) forward until the belt (6)is
    released from the pulley 
    (7).
    Undo the central screw 
    (8)and take out the pulley
    (7) from the shaft.
    If it is difficult to take out, use the special extractor #
    code 60253000/0 inserted into the holes 
    (9)of the
    pulley, but do not completely undo the screw 
    (8)so
    that the extractor puts pressure on the head of the
    screw and does not damage the threaded hole of
    the shaft.
    Remove the protection from the exhaust 
    (10)and
    disconnect the cable control from the accelerator
    and all the electrical wires.
    Detach the fuel line pipe, 
    taking care not to spill
    fuel
    .
    10
    4/2005
    87
    9
    5
    76534
    2
    1
    92
    5.5.1
    REMOVAL OF THE ENGINE
    
    
    
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    WORKSHOP MANUAL
    page from 
    2003to  ••••
    © by GLOBAL GARDEN PRODUCTS 
    						
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