Global garden products N 92 Hydro Series Workshop Manual Download Page 7

4/2007

2.1 SAFETY REGULATIONS

A) Qualification of operators

All maintenance, disassembly and repairs must be
carried out by expert mechanics who are familiar
with all the accident prevention and safety regula-
tions after reading through the procedures in this
manual.

B) Safety measures

All the machines are manufactured in accordance
with the strict European safety regulations in force.
To maintain these levels of safety in the longer term,
the Service Centres should work to this end by
making appropriate checks every time there is the
chance to do so.
Particularly, every time there is work done on the
machine the Service Centre should:

1) check:

– that safety microswitches are working cor-

rectly  [see 7.3];

– that the casings and protection covers have

not been removed;

– that the labels with instructions or provisions

have not been removed or have become illegi-
ble (these form an integral part of the safety
system).

2) they should also:

– restore to proper working order any safety

devices which have been manipulated or
removed;

– reattach inefficient, damaged or missing cas-

ings and protection covers;

– replace illegible labels;
– not endorse any repair or modification on the

machine or the engine which results in a
change in performance or use that is incorrect
or different from the purpose for which it was
designed and approved;

– warn the Customer that the failure to comply

with the above points results in the automatic
annulment of the Guarantee and the Manufac-
turer declines all responsibility, as also shown
in chapter 1 of the Instruction Booklet.

C) Precautions during servicing

The operations described in this manual do not
entail particularly hazardous situations besides the

normal hazard related to mechanical operations
and that can be avoided by taking the necessary
care and attention normally required for this type of
work.

As well as following the usual accident prevention
regulations that apply to most repair shops, we rec-
ommend you: 

– taking out the ignition key before beginning

any repair work.

– protect hands with suitable working gloves,

especially when working near the cutting unit; 

– check that you do not cause accidental petrol

leaks or other losses;

– do not smoke when working on the tank or

when handling petrol; 

– do not inhale oil or petrol fumes; 
– clean up all traces of spilt petrol immediately; 
– test the engine in a well-ventilated environ-

ment or where there are adequate exhaust
fume extraction systems;

– do not pollute the environment with oil, petrol

or other waste and dispose of all waste in
accordance with the laws in force;

– ensure that other persons cannot accidentally

carry out actions that may physically endan-
ger those working on the machine.

D) Necessary equipment

All the operations can be carried out with the tools
normally used in a good garage.

Some operations require special equipment and
tools [

2.2].

E) Symbols and terms used for safety purposes

Some paragraphs in this manual are preceded by
symbols which indicate the following:

Operations that should be carried out with
utmost care to avoid impairing the functionality
and safety of the lawnmower.

Operations that should be carried out with
utmost care to avoid injury to operators. 

“WARNING” stresses the risk of injury to oneself
and others if instructions and regulations are not
observed 

© by GLOBAL GARDEN PRODUCTS

N...92

WORKSHOP MANUAL

SAFETY REGULATIONS

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Summary of Contents for N 92 Hydro Series

Page 1: ......

Page 2: ...res and various repair methods will remain the same by GLOBAL GARDEN PRODUCTS No use of the illustrations or duplication reproduction or translation even partial of the texts in this document may be m...

Page 3: ...s greater accessibili ty may be required This can be done by taking the unit concerned off and working at the bench or by removing the cover or other external parts Whether or not this will be useful...

Page 4: ...4 0 Replacement of the drive belt 6 5 0 Replacement of the small wheels for the drive belt 6 6 0 Replacement of the blades belt 6 7 0 Replacement of the supports and shafts of the blades 6 8 0 Replace...

Page 5: ...perations that can be handled by a good mechan ic while concentrating more on specific aspects and the best servicing procedures You are asked to read through this manual to acquire a basic understand...

Page 6: ...umber must always be quoted when requesting spare parts or any information from the Manufactur er A Guarantee validity B Guarantee validity The guarantee is supplied under the terms and the limits of...

Page 7: ...tions described in this manual do not entail particularly hazardous situations besides the normal hazard related to mechanical operations and that can be avoided by taking the necessary care and atten...

Page 8: ...om a good workshop However it is advisable to have a set of special tools 1 5 These tools 1 5 are to be used whenever is given in this text 1 Blocks H 26 mm for adjusting the cutting deck 2 Blocks H 3...

Page 9: ...1 between the base of the jack and the frame and checking to see that the free movement of the front spring equaliser has not been obstructed B Rear Place a suitable block 2 beneath the lower edge of...

Page 10: ...osition to make sure that there is no more than 2 litres of fuel inside To assure full stability the lawn tractor must only be rested on the points shown inserting a block 1 of about 120 mm under the...

Page 11: ...ened completely but only so much that it can ensure the free rotational movement of the pin on its axis without however creating excessive free play which could result in the parts concerned becoming...

Page 12: ...Check engine oil level Check for fuel leaks Align cutting deck Sharpen and balance the blades and check the condition of the hubs Check for wear in the belts Check the blade brake engagement Grease f...

Page 13: ...the blades from rotating within five seconds A Adjusting blade engagement N B When adjusting the engagement it could be necessary to remove the belt guards in this case the guards must always be repla...

Page 14: ...nut 4 Never go under these amounts to avoid overloading the brake unit When the adjustments have been made the park ing brake should prevent the lawn tractor from moving on a slope of 30 16 with the...

Page 15: ...djustment you cannot make any further adjust ments from the outside Therefore you need to dismantle the whole rear axle of the machine see 5 6 and contact one of the manufacturer s Service Centres by...

Page 16: ...ion and limits forward movement power a belt which is too tight increases noise and results in jerky movements or tipping up when engaging the drive In these cases the stretcher will need to be adjust...

Page 17: ...3 This is obtained by opening the inspection hatch beneath the seat and by turning the nuts 4 appro priately until the required measurement is reached Take care not to accidentally modify the positio...

Page 18: ...he parallel and the minimum height front and back Put the lawn tractor onto a flat and stable surface such as a work bench and put blocks beneath the cutting deck in line with the centre lines of the...

Page 19: ...ht from the ground between the front and back edges If the front edge tends to rise before or after the back edge turn the nuts 11 on the connecting rod 12 tight en the nuts the front edge will rise f...

Page 20: ...hine unscrew the nut 3 being careful to adequately support the crown wheel axle components to prevent them from unthreading themselves completely Remove the screw 4 below which the spacer 5 is located...

Page 21: ...ck 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 the...

Page 22: ...ed 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...

Page 23: ...On assembly be careful to correctly position the keys 3 on the shafts correctly locate the right and left blades with the fins facing towards the inside of the plate fit the flexible disc 4 so that th...

Page 24: ...y 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 fasten...

Page 25: ...w 4 and remove the bag present signal microswitch guard 5 In models with mechanical transmission unscrew the gear lever knob 6 The cover 7 is fixed by 2 lower screws 8 1 for each side located under 6...

Page 26: ...10 of the cover in the hous ings in the footboards IMPORTANT Check the correct assembly of the bag present microswitch guard 5 so as to ensure regular operation of the safety systems 4 2007 7 10 9 7...

Page 27: ...ving the conveyor gives access to the small side wheels and the transmission belt the joints of the cutting plate lifting lever The conveyor 1 is connected to the rear plate 2 by two plastic clamps 3...

Page 28: ...Unscrew the four nuts 9 and remove the rear seat support 10 Unscrew the two fixing nuts 11 and remove the tank 6 For reassembly follow the operations described above in reverse being careful to alway...

Page 29: ...s situations Free the blade belt 1 from the clutch pulley 2 Disconnect the connectors 3 from the clutch con tacts 2 unhook the return spring 4 from the clutch side and unscrew the central screw 5 with...

Page 30: ...inserted in the groove in the clutch 2 and remember to replace the spring 4 Fully tighten the engine and pulley fixing screws to the prescribed values Remember to replace the fuel pipe fastening clam...

Page 31: ...he parking brake In hydrostatic transmission models grasp ing the two branches of the belt 2 pulling it just enough to free it from the pulley throat 3 over coming the resistance of the tension regula...

Page 32: ...screw with a nut 19 and it is attached to the frame by four screws 20 Undo the nut 19 and then carefully undo the four lower screws 20 holding up the unit so that it does not fall To reassemble revers...

Page 33: ...position of neutral for the pedal see 4 4 When assembly is completed Refit the collector channel see 5 3 Refit the rear wheels see 6 1 Tightening torques 10 Screws for brackets 25 30 Nm 11 Self tappin...

Page 34: ...hree flexible split pins 6 of the lifting tie bars Having checked that there are no obstacles the plate can be removed slightly rotating it anticlock wise so that all the pins come out of their housin...

Page 35: ...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 directing around the splining hole On assembly i...

Page 36: ...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 opposite side and hammer it on various points around t...

Page 37: ...crown wheel and pinion the 0 8 mm spacer 10 that might have been placed under the crown wheel previously must be recovered On assembly check the grease charge inside the sleeve 11 and top it up if nec...

Page 38: ...l lower bush 16 On reassembly ensure that the bush 16 is fitted with the protuberant part upwards Refit the plate 15 without tightening the screws 14 Align the pinion with the crown wheel see 6 3 A an...

Page 39: ...els you need to dis mantle the guide pulley 11 attached to the rear plate When reassembling make sure that the belt 12 is correctly positioned in the pulleys inside the rims taking particular notice o...

Page 40: ...he tension regulator guide pulley The two wheels 3 are held onto the frame by two nuts 4 with a spacer in between 5 When reassembling there should be kept in mind that thetall spacer 5a is to be fitte...

Page 41: ...the belt Remove the left belt guide 7 fixed by two nuts 8 At this point the tension regulator guide pulley can distanced manually and the belt 9 unthreaded and replaced For reassembly perform the ope...

Page 42: ...and fixings in any case they must both be removed after having identified all the fixing points Free the blade belt 3 from the clutch pulley 4 and set the cutting height adjustment lever to position...

Page 43: ...t this into the support Fit on the upper bearing and using the special bush 18 which works on the inner ring hit it squarely with a mallet until the bearing is fully driven home The right and left sha...

Page 44: ...to access the screws taking care over the electric cables unscrew the two fixing screws 7 and unthread the accelerator 8 together with the cable On assembling put the accelerator lever in the MINIMUM...

Page 45: ...f them is less than 5 mm Renew the disc if it is damaged distorted or less than 4 mm thick On reassembly carefully reposition all the compo nents and refit the complete support When con necting the ro...

Page 46: ...st always be connected Battery terminals corroded or with poor contact Check and clean the connections c after several minutes use Poor or missing earth contact on the charge regulator Check the earth...

Page 47: ...aults Replace the block 8 The pilot lamp becomes weak after several hours work and the engine goes off Insufficient charge Check that the charging cable has not detached 9 The engine stops while in us...

Page 48: ...to work If the problem stops replace the faulty card PROBLEM CAUSE REMEDY 12 No audible signal for the grass catcher full con dition Malfunctioning or faulty blade switch or microswitch and grass catc...

Page 49: ...the safety devices intervene Uninfluential A STARTING START position OPERATOR GRASS CATCHER BLADES DRIVE PARKING ENGINE PILOT LAMP Engaged DOES NOT start Flashing Engaged DOES NOT start Flashing Absen...

Page 50: ...Tester reading and condition GRASS CATCHER ATTACHED MICROSWITCH 10 6 without g catc O with g catcher SEAT MICROSWITCH 10 14 absent O seated PARKING MICROSWITCH 10 17 O free engaged BLADE SWITCH 10 16...

Page 51: ...e tester in Voltmeter func tion Volt DC 0 20 with the black ferrule on termi nal 1 and the red ferrule on terminal 11 of the wiring connector 1 The key in the ON position The reading shows the battery...

Page 52: ...ch due to excitation of the electric wiring If this is not so check the operation of the cabling and control switch see 7 3 The clutch must be replaced if engagement does not take place after these ch...

Page 53: ...t the connector 1 In making a bridge between the terminals 11 and 4 of the wiring connector 1 the click of the relay bobbin should be heard and the starter motor should come into action Only with B S...

Page 54: ...rrule to earth and the red ferrule on terminal 10 of the wiring con nector 1 C Checking the operation of the self setting protection For this test put everything in the same situation as in point A By...

Page 55: ...e voltmeter tester measure the voltage at the battery terminals If the value does not rise but tends to fall even slowly it means that the regulator is not charging sufficiently and must be replaced I...

Page 56: ...for the life of the battery and must be carried out according to these instructions do not recharge the battery when its case is broken or damaged carefully read the instructions for using the batter...

Page 57: ...usages of each type A Free B Activated 15 mm A B 2 6 mm min 1 mm A B 1 2 Adjust the seat safety microswitch 1 only by changing the position of the cam 2 after loosening the two fixing screws 3 This ad...

Page 58: ...3 NO 2 C NC 3 NO 2 C NC 3 NO 2 C a b c d AVV Bt Mot Avv GND GND OR BK 1 6 12 1 1 Electronic card 2 Engine 2a Generator 2b Starter motor 2c Engine stop 2d Carburattor 3 Battery 4 Starter relay 5 Key ig...

Page 59: ...0 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 WH 2 1 Electronic card 2 Engine 2a Generator 2b Starter motor 2c Engine stop 2d Carburattor 2e Starter relay 3 Battery 4 Starter relay 5 Key ignition...

Page 60: ...ulleys fastening 25 30 Nm 5 Nuts for flange support 25 30 Nm 6 Screw for blades 45 50 Nm Every section in this manual gives values for all the components involved in each operation B Adjustments 4 200...

Page 61: ...MBLY AMOUNTS AND CHECKS 8 2 0 1 1 page from 2007 to by GLOBAL GARDEN PRODUCTS 4 2007 1 8 2 SUMMARY OF MAIN ASSEMBLY AMOUNTS AND CHECKS 1 Blades belt development 2 Drive belt development 2 Hydrostatic...

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