GGP Italy SPA Lawn Tractor 71503773 2 Operators Manual
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responding connector of the special “CB01” maintenance battery-charger sup- plied ( if included)or available on request (☛8.5). This connector must only be used for connection to the “CB01” maintenance battery-charger. For its use: – follow the instructions given in the relative user manual, – follow the instructions given in the battery booklet. 6.3 CHECKS AND ADJUSTMENTS Summary of the main situations where work may be required 6.3.1 D ISMANTLING, SHARPENING AND BALANCING BLADES Check that the blade is sharpened properly and firmly fixed to the bracket. – A badly sharpened blade pulls at the grass and causes the lawn to turn yellow. – A loose blade causes unusual vibrations and can be dangerous. All operations on the blades (dismantling, sharpening, balancing, remounting and/or replacing) require a certain familiarity and special tools. For safety reasons, go to a specialized centre if you do not have the right tools or experience. Wear strong gloves when handling the blades. To remove a blade, hold it firmly and undo the central bolt (1)in the direction indicated by the arrow for each blade, noting that one of the fixing bolts has a right-hand thread and the other one has a left-hand thread. !WARNING! !WARNING! IMPORTANT ➤ EN 40MAINTENANCE Every time that ... The blades vibrate The blades tear the grass and the lawn becomes yellow The cut is uneven The blades engage in an abnormal way The machine does not brake Forward movement is erraticYou will need to ... Check the bolts (☛6.3.1) or balance the blades (☛6.3.1). Sharpen the blades (☛6.3.1). Adjust the alignment of the cutting deck (☛6.3.2). Regulate the blade engagement adjuster (☛6.3.3). Check the brake (☛6.3.4). Adjust the stretcher spring (☛6.3.5).
EN 41 MAINTENANCE Sharpen the two cutting edges using a medium grade grinding wheel and check the balance by holding the blade up with a round 18 mm Ø bar inserted in the central hole. Damaged or bent blades must always be replaced; never try to repair them! ALWAYS USE MANUFACTURERS GENUINE REPLACEMENT BLADES BEARING THE SYMBOL ! The blades differ and are contra-rotating. When installing them, make sure that they are correctly positioned by referring to the code number marked on the outside of each one. When assembling the blade, always follow the instruc- tions given, making sure the blade wings are facing towards the inside of the cutting deck and the cupped side of the elastic disc (1) is pressing against the blade. Tighten the fixing screws (2) using a torque wrench set to 45-50 Nm. If one or both shaft hubs (3) come off when dismantling the blades, make sure the keys (4) are securely lodged in place. 6.3.2 C UTTING DECK ALIGNMENT The cutting deck should be properly set to obtain a good cut For achieving good results from cutting, the front part NOTE !WARNING! !WARNING! !WARNING! Ø 18 mm 21 21 1 2 43 82004345/1 82004344/1 82004352/0 81004346/3 82004354/0 82004353/0 1 1
should always be 5 - 6 mm lower than the rear. – Put the machine onto a flat surface and check the tyre pressures; – put 26 mm blocks (1) under the front edge of the deck and 32 mm blocks (2) under the rear edge, and then put the lifting lever into position «1»; – fully loosen the adjuster (3), the nuts (4 – 6 – 8) and the locknuts (5 – 7 – 9) of the three trace rods until the deck is resting on the blocks; – screw the two upper right nuts (6 – 8) and the lower left nut (4) until the deck starts ris- ing; tighten the three locknuts (5 – 7 – 9) and turn the adjuster (3) until the control cable is taut. Any difference in height from the ground between the right and left side of the deck can be compensated by turning the two nuts (4 – 8) and locknuts (5 – 9) of just the back rods. Move the control lever to 2 or 3 different positions, making sure that the deck rises evenly and that the difference in height from the ground remains the same between the front and rear edge. If the front part rises too early or too late, you can regulate the movement by turning the nuts (10) on the connecting rod (11). Screwing the nuts on the rod makes the rear part rise earlier, while unscrewing them does the opposite. Always remember to fully tighten all the nuts and locknuts when the adjustment has been made. If you are unable to get the cutting deck adjusted properly, consult a Licensed Service Centre. EN 42MAINTENANCE 2 - h = 32 mm 1 - h = 26 mm 10 6 11 7 3 5 4 8 9
EN 43 MAINTENANCE 6.3.3 ADJUSTMENT TO THE ENGAGEMENT AND BRAKE OF THE BLADES When the blade disengagement lever is operated, it also brings the blade brake into operation which stops the blades within few seconds. A stretched cable and changes in the length of the belt can impair the blades’ engagement or rotation. To compensate this, turn the adjuster (1) until the correct spring length (2) is achieved (measured from the outer ends of the springs with the blades engaged). 6.3.4 B RAKE ADJUSTMENT Should the brakes work poorly, consult a Licensed Service Centre immediately. 6.3.5 A DJUSTING THE TENSION OF THE DRIVE BELT Should you notice a drop in forward drive power, adjust the tension of the spring of the stretcher to return to former condi- tions. The adjustment is made by opening the engine hood to reach the right side of the engine. Turn the nuts (2) as much as necessary to reach length “A” of the spring (1) of: A= 119 - 121 mm (For mechanical drive models) A= 120 - 122 mm (For hydrostatic drive models) measured to the outside of the end of the spring. When the adjustment has been made, tighten the nuts (2). ➤ ➤ 1 A 2 12 97 ÷ 99 mm
When replacing the belt, take great care when using for the first few times as engagement may be sudden until the belt is sufficiently run in. 6.4 DISMANTLING AND REPLACEMENT 6.4.1 R EPLACING WHEELS Stop the machine on a flat surface and put a block under a load-bearing part of the frame on the side that the wheel is to be changed. The wheels are held by a snap ring (1) which can be eased off with a screwdriv- er. The rear wheels are directly coupled to the differential axle shaft and fastened by a key that forms part of the wheels hub. Should you substitute one or both rear wheels, ensure that they are of the same diameter, and check that cutting deck is horizontal to pre- vent an uneven cut. Before refitting a wheel, smear some waterproof grease on the axle and carefully refit the snap ring (1) and washer (2). 6.4.2 R EPLACING AND REPAIRING TYRES The tyres are of the «Tubeless» type and therefore all puncture repairs will have to be carried out by a tyre-repair expert in accordance with the methods for this kind of tyre. IMPORTANT NOTE NOTE EN 44MAINTENANCE 21
EN 45 MAINTENANCE 6.4.3 REPLACING BULBS( if fitted) The bulbs (18W) have a bayonet fitting and are installed in the bulb holder which can be taken out by turning it anti-clockwise, using pliers. 6.4.4 R EPLACING A FUSE The machine is fitted with fuses (1) with different capacities and functions. Specifically: – 6.3 A (delayed) fuse (1) = protects the main and power circuits of the electronic board. When it blows, the machine stops and the dashboard light switches off. – 25 A fuse (2) = protects the battery charger cir- cuit. When it blows, the battery gradually runs out and the machine will have problems start- ing. The fuse capacity is indicated on the fuse. A blown fuse must always be replaced by one of the same type and ampere rating, and never with one of another rating. If you cannot find out why the fuse has blown, consult a Licensed Service Cen- tre. 6.4.5 R EPLACING BELTS Replacing belts is quite a complicated process of dismantling and subsequent adjustment and must only be carried out by a Licensed Service Centre. Replace the belts as soon as they show obvious signs of wear! ALWAYS USE GENUINE REPLACEMENT BELTS! NOTE IMPORTANT ➤ 2 1
EN 46TROUBLESHOOTING 7. TROUBLESHOOTING PROBLEM LIKELY CAUSE SOLUTION 1.With the key on «ON», the light remains off 2.With the key on «START» the light flashes and the starter motor does not run 3.With the key on «START» the light comes on but the starter motor does not run 4.With the key on «START», the starter motor runs, but the engine does not run 5.Starting is difficult or the engine runs erraticallyThe protection of the electronic card has cut in due to: – badly connected battery – battery terminals crossed – completely flat battery or eroded bat- tery plates – fuse blown – bad earthing to the engine or the frame – electronic card wet – earthed micro-switches – you are not ready for starting – insufficiently charged battery – battery charger fuse blown – badly earthed starter motor – insufficiently charged battery – faulty fuel supply – faulty ignition – fault in carburationTurn the key to «STOP» and look for the cause of the problem: – check connections (☛3.4) – check connections (☛3.4) – recharge battery (☛6.2.5) – replace fuse (6.3 A - delayed) (☛6.4.4) – check connections of black earth leads – dry using tepid air – check connections – check that the conditions allowing starting are met (☛5.2.a) – recharge battery (☛6.2.5) – replace fuse (25 A) (☛6.4.4) – check earth connections – recharge battery (☛6.2.5) – check the level in the tank (☛5.3.3) – open the fuel stopcock ( sif fitted) (☛5.4.1) – check the wiring of the fuel open com- mand ( if fitted) – check the fuel filter – check that spark plug caps are firmly fitted – check that the electrodes are clean and have the correct gap – clean or replace the air filter – flush out the float chamber – empty fuel tank and refill with fresh fuel – check and, if necessary, replace fuel filter ➤ ➤
EN 47 TROUBLESHOOTING PROBLEM LIKELY CAUSE SOLUTION 6.Weak engine per- formance during cut- ting 7.The engine stops but the light flashes 8.The engine stops and the light goes off 9. The engine stops but the light stays on 10.The blades do not engage 11.Uneven cut and poor grass collection– forward speed too high in relation to cutting height (☛5.4.5) – the safety devices cut in The protection of the electronic card has cut in due to: – earthed micro-switch – battery contains electrolyte but is not charged – overvoltage caused by the charge reg- ulator – badly connected battery (poor contact) – engine badly earthed – problems in the engine – cable lengthened or belt loosened – cutting deck not parallel to the ground – blade cutting badly – forward speed too high compared to height of grass (☛5.4.5) – collector channel is blocked – cutting deck full of grass– reduce the forward speed and/or raise the cutting deck – check that the conditions allowing starting are met (☛5.2.b) Put the key in position «STOP» and look for the cause of the problem: – check connections – recharge battery (☛6.2.5) – contact a Licensed Service Centre – check connections (☛3.4) – check engine earth connection – contact a Licensed Service Centre – turn the adjuster (☛6.3.3) – check the tyre pressures (☛5.3.2) – realign the cutting deck to the ground (☛6.3.2) – check that the blades are fitted prop- erly (☛6.3.1) – sharpen or fit new blades (☛6.3.1) – check the tension of the belt and con- trol cable of the blade engagement lever (☛6.3.3) – reduce forward speed and/or raise the cutting deck – wait for the grass to dry – remove the grass-catcher and empty the collector channel (☛5.4.7) – clean the cutting deck (☛5.4.10)
EN 48TROUBLESHOOTING PROBLEM LIKELY CAUSE SOLUTION 12.Unusual vibrations while working 13.With the engine running, the machine does not move when the drive pedal is pressed ( for hydrostatic drive mod- els) ➤ – the blades are imbalanced – blades loose – fixing bolts loose – disengage lever in position «B» (☛ 4.33)– balance or replace any damaged blades (☛6.3.1) – check that the blades are firmly fitted (☛6.3.1) (remember the left-hand thread of the right-hand blade) – check and tighten all the fixing bolts of the engine and frame – put into position «A» If problems continue after having carried out these operations, contact a Licensed Service Centre. Do not take on complicated repair work if you dont have the necessary equipment and the technical knowledge. The guar- antee is automatically revoked and the manufacturer declines all responsibility for any repairs which are badly done. !WARNING!
EN 49 ACCESSORIES ON REQUEST 8. ACCESSORIES ON REQUEST 1. FRONT COUNTERWEIGHTS These improve stability at the front of the machine, particularly when being used on ground which is mostly sloping. 2. STONE-GUARD KIT For use in place of the grass-catcher when the cuttings are not to be collected. 3. TOWING HITCH For towing a small trailer. 4. CLOTH COVER Protects the machine from dust when not in use. 5. CB01 MAINTENANCE BATTERY-CHARG- ER This makes it possible to keep the battery in good working order when the machine is in storage, guaranteeing an optimum level of charge and a longer life to the battery. 6. KIT FOR “MULCHING” (only on pre- arranged models) It finely chops the grass cuttings and leaves them on the lawn, instead of collecting them in the grass-catcher. 1 2 3 4 5 6