Global Garden Products Lawn Mower 72 72 Hydro Instructions Manual

							After checking that there is nothing in the way, the deck can be removed, first by rotating it slightly to the left
so that all the pins come out of their housings. Then take it out from the right-hand side.
On assembly, first remove the block underneath the rear right wheel.
Check that the pin
(11)moves freely [see 2.6 B].
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5.8.1
REMOVAL OF THE CUTTING DECK





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72
6.1.0
REPLACEMENT OF TYRES AND WHEELS





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6.1 REPLACEMENT OF TYRES AND WHEELS
A) Tyres
The tyres used are of the «Tubeless» type and so
every repair of a hole in the tyre must be done by a
tyre specialist according to the methods used for
this type of tyre.
After replacing one or more tyres or the wheels, it is
always necessary to check the pressure and to
check the alignment of the cutting deck [see 4.6].
WARNING
Replace distorted wheel rims as they could impair
the tyre’s hold.
B) Wheels
The wheels are held by a snap ring (1)which can be
removed with the help of a screwdriver.
NOTE
If a wheel is jammed onto the shaft, use a releasing
spray directed around the splining hole.
When reassembling, smear grease over the shaft, to
help the next time the wheel needs to be removed;
reposition the spacer washer 
(2)and the snap ring
(1)with the rounded edge facing inwards.
Tyre pressures
Front ........................................................... 1.5 Bar
Rear ........................................................... 1.0 Bar
1
2 
						

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72
6.2.0
REPLACEMENT OF FRONT WHEEL BEARINGS





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6.2 REPLACEMENT OF FRONT WHEEL
BEARINGS

Dismantle the front wheel [see 6.1].
The front wheel bearings 
(1)are force splined into
the front wheel hub.
To be able to remove a bearing, a 10 - 12 mm.
round bar 
(2)is needed. Insert this from the oppo-
site side and hammer it on various points around
the internal circumference of the bearing.
The new bearing must be inserted with the help of a
plastic mallet and a bronze pad 
(3)# code
60800031/0 
working only on the outer ring of the
bearing
.
3
1
2
1
1 
						

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72
6.3.0
REPLACEMENT OF THE STEERING COMPONENTS





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6.3 REPLACEMENT OF THE STEERING
COMPONENTS
A) Dismantling the pinion and the ring gear

Follow the same procedure as that for adjusting
free play [see 4.7].
B) Dismantling the steering shaft
After having dismantled the pinion and the ring gear
as described at point “
A”, take out the snap ring (1)
from its seat in the shaft (2)and extract the shaft
from the bushings 
(3)pulling it downwards.
After having refitted all the components it will be
necessary to …

Adjust the free play between the pinion and the
ring gear [see 4.7], remembering that with a new
pinion and ring gear it is not necessary to insert
spacers in-side the hub.

Check the toe-in and the alignment of the steer-
ing wheel [see 4.8].
2
1
3 
						

							6.4 REPLACEMENT OF THE DRIVE BELT

Dismantle the engine pulley [see 5.6] to release
the belt.

Lift the wheels cover [see 2.5].
It also helps if the transmission belt is loosened.
This is done by ...
➤In mechanical drive models:engaging the
parking brake
➤In hydrostatic drive models:releasing the
spring 
(1)of the stretcher 
Dismantle the pulley of the stretcher 
(2), held by the
nut 
(3).
➤Mechanical drive models:
Remove the snap ring (4) and lift the pulley (5)
just enough to free the belt (6).
At this point the belt can be removed.
On reassembling, make sure that the belt 
(6)is cor-
rectly positioned in the pulleys inside the rims [see
8.2.4].
When assembly is completed …

Close the wheels cover [see 2.5].

Refit the engine pulley [see 5.6].
➤Mechanical drive models:

Adjust the drive engagement [see 4.5].
Tightening torque
3Pulley fixing nut  ................................ 25 ÷ 30 Nm
5
4
6
23
6
1
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6.4.0
REPLACEMENT OF THE DRIVE BELT





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							6.5 REPLACEMENT OF THE BLADE BELT
Bring the cutting deck to position «1» to gain easy
access to the upper area.
➤In mechanical drive models:
slide the two belt shifter bushes (1)up until the
belt 
(2)is released from the engine shaft pulley
(3).
➤In hydrostatic drive models:

Dismantle the engine pulley [see 5.6] or pull it
out until the belt 
(2)is released.
Put the blade engagement lever in the engaged
position to free the brake 
(4).
Loosen the screw 
(5)in order to move the stretcher
pulley 
(6)until the belt (2)is released, without un-
screwing it completely.
Dismantle the pulley 
(7)of the blade shaft attached
by the screw 
(8).
At this point the belt can be taken out and replaced.
On reassembling, take care to exactly position the
new belt in the pulley rims [see 8.2.5].
When it has been reassembled, it is a good idea to
…

Adjust the blade engagement [see 4.1].

Check that the blade brake is working properly
[see 4.2].
Tightening torques
3Guide pulley nut  ............................... 25 ÷ 30 Nm
7Blade pulley screw  ........................... 25 ÷ 30 Nm
4
6
2
5
8
7
1
123
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6.5.1
REPLACEMENT OF THE BLADE BELT





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							6.6 REPLACEMENT OF THE SUPPORT AND
SHAFT OF THE BLADE

Remove the cutting deck [see 5.8].
NOTE
This operation is not strictly necessary since, with a
little practice and experience, it is possible to dis-
mantle the deck supports without removing the
deck. If not removed it would be best to put the
deck into a middle position for easy access both
above and below.
Put the blade engagement lever into the engaged
position to free the brake 
(1), or manually move the
brake
(1) away and dismantle the pulley (2)from the
blade shaft, attached by the screw 
(3).

Dismantle the blade [see 4.10] and take out the
hub.
Dismantle the flanged support 
(4)by unscrewing
the four fixing screws 
(5).
The entire support (4), including shafts and bear-
ings, is a spare part available as single assembly
unit.
If you should want to just replace the shaft or bear-
ings, remove the key
(6)and hit the shaft with a
plastic mallet on the pulley side in order to remove
the shaft together with the lower bearing 
(7).
After having removed the Sieger ring 
(8), the dust
cover 
(9)and the key (6), the bearing (7)splined
onto the shaft can be removed using a normal
extractor, taking care to close up the threaded hole
(11)with a screw to prevent the point of the extrac-
tor from damaging the thread.
The second bearing still in place must be removed
by hitting it from the inside of the flange using a 12
÷15 mm diameter round bar 
(12).
On reassembling, first put the shaft into the hole of
the lower bearing and insert this into the support.
710
9811
6
4
7
5
4
5
1
2
3
3/2002
72
6.6.0- REPLACEMENT OF THE SUPPORT AND
SHAFT OF THE BLADE




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							© by GLOBAL GARDEN PRODUCTS
72
6.6.0- REPLACEMENT OF THE SUPPORT AND
SHAFT OF THE BLADE




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WORKSHOP MANUAL
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Fit on the upper bearing and, using the special bush
# Cod. 60800030/0 
(13) which works on the inner
ring
, hit it squarely with a mallet until the bearing is
fully driven home.
Fit the flange support onto the deck, 
fully tighten-
ing the nuts (5)
. 
Tightening torques
3Blade pulley screw.  .......................... 25 ÷ 30 Nm
5Nuts for flanged support  .................. 25 ÷ 30 Nm
13
4
12
4 
						

							6.7 REPLACEMENT OF THE ACCELERATOR
Take the small knob (1)off the accelerator.

Lift the wheels cover [see 2.5].
Disconnect the end of the cable 
(2)from the cou-
pling terminal 
(3)on the engine.
Remove the clamp 
(4), undo the two screws (5)and
take out the accelerator together with the cable.
On reassembling, put the accelerator lever in the
«MINIMUM» position shown on the label, connect
the end of the wire 
(2) to the terminal (3) on the
engine after having moved the cursor 
(6)in the
same «MINIMUM» position specific to each type of
engine and shown in the instruction handbook.
Lastly, put back the clamp 
(4)and …

Close up the wheels cover [see 2.5].
4
5
2
63
1
3/2002
72
6.7.0
REPLACEMENT OF THE ACCELERATOR





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							6.8 REPLACEMENT OF THE BRAKE PADS AND
DISC

Remove the left-hand rear wheel [see 6.1].
Dismantle the pin 
(1)from the lever (2)and undo the
two screws 
(3)which hold on the support (4).
The support 
(4)contains a pad (5a)separated from
the control pistons 
(6)by a plate (7).
The other pad 
(5b)can be reached by taking off the
disc 
(8). 
If there is oil on the pads, clean with solvent and go
over them with fine-grade abrasive paper.
Both pads should be replaced if the depth of either
of them is less than 5 mm.
Renew the disc if it is damaged, distorted or less
than 4 mm thick.
On reassembling, carefully reposition all the com-
ponents and refit the complete support.
NOTE
During all these operations it is better to not
unscrew or loosen the central screw
(9)to avoid
altering the calibration of the cam driving the pis-
tons.
If it has been moved, the lever’s free movement will
have to be checked [see 4.3].
When fully reassembled ...

Check the brake adjustment [see 4.3].
2
9
5b8
4
6
7
5a
2
3
34
11
4/2005
72
6.8.1
REPLACEMENT OF THE BRAKE PADS AND DISC





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WORKSHOP MANUAL
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