Stiga MPV 320W Workshop Manual
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Stiga MPV 320W Workshop Manual

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WORKSHOP MANUAL
MPV 320W - MPV 520W
2017-2019

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  • Page 1 WORKSHOP MANUAL MPV 320W - MPV 520W 2017-2019...
  • Page 2 All brands, names, logos and trademarks mentioned belong to their respective owners. © by STIGA - No use of the illustrations or duplication, reproduction or translation, even partial, of the texts in this document may be made without explicit authorisation.

  • Page 3: Table Of Contents

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 1 - INTRODUCTION 2017 1 - INTRODUCTION Summary CONSULTATION GUIDE ..............3 1.1.1 Limitation of Responsibility ............3 1.1.2 Structure of the Manual ..............3 1.1.3 Symbols and Definitions used ............4 WORK SAFETY INSTRUCTIONS ............5 1.2.1...

  • Page 4: Symbols And Definitions Used

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 1 - INTRODUCTION 2017 1.1.3 Symbols and Definitions used a) Symbols They are used to draw the attention of the operator, reminding him to perform the interventions with the necessary attention and caution.

  • Page 5: Work Safety Instructions

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 1 - INTRODUCTION 2017 1.2 WORK SAFETY INSTRUCTIONS 1.2.1 Qualification of operators All maintenance, disassembly and repairs must be carried out by expert mechanics who are fa- miliar with all the accident prevention and safety regulations after reading through the procedures in this manual.

  • Page 6: Safety Measures To Be Adopted

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 1 - INTRODUCTION 2017 1.2.4 Safety measures to be adopted 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.

  • Page 7: Service Repairs Outside Warranty

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 1 - INTRODUCTION 2017 • Furthermore, this warranty does not apply to: - Components subject to wear such as blades, belts, wheels, batteries and cables. - Normal wear and tear due to use.

  • Page 8: Identification Of The Machine And Components

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 2 - SERVICING RECOMMENDATIONS 2017 2 - SERVICING RECOMMENDATIONS Summary IDENTIFICATION OF THE MACHINE AND COMPONENTS .....8 2.1.1 Machine identification ..............8 2.1.2 Engine identification ..............8 2.1.3 Transmission Unit identification ............9 EQUIPMENT REQUIRED ..............9 2.2.1...

  • Page 9: Servicing Recommendations

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 2 - SERVICING RECOMMENDATIONS 2017 2.1.3 Transmission Unit identification The machine is equipped with a transmission hydro- static unit. This unit is made by another manufacturer according to precise technical specifications which differentiate it from similar items by this same Manufacturer.

  • Page 10: Front Lifting

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 2 - SERVICING RECOMMENDATIONS 2017 10 / 2.3.2 Front lifting • Remove the cutting deck 6.1.3] Position two suitably sized wedges behind the rear wheels to prevent all uncontrolled movement of the machine.

  • Page 11: Maintenance

    Do not use high pressure washers, sol- Every 25 hours Cleaning the machine vents, aggressive detergents or abrasive cleaners. Re- store damaged paint using STIGA paint seasonally Check and sharpen the Check that the blades are not worn or damaged. Sharpen cutting deck blades and balance the blades.

  • Page 12: Control Of Safety Devices

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 2 - SERVICING RECOMMENDATIONS 2017 12 / 2.4.3 Control of safety devices It is of utmost importance that all the safety systems present upon delivery of the machine are kept in efficient working order over time, conducting appropriate checks every time there is the chance to do so.
  • Page 13 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 3- TECHNICAL DATA 2017 13 / 3 - TECHNICAL DATA Summary TECHNICAL SPECIFICATIONS ............13 OVERALL DIMENSIONS ..............14 3.1 TECHNICAL SPECIFICATIONS Machine Model STIGA MPV 320W MPV 520W Dimensions (Length x Width x Height) (mm)
  • Page 14 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 3- TECHNICAL DATA 2017 14 / 3.2 OVERALL DIMENSIONS 1350 2530 1120...
  • Page 15 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 4 - ENGINE AND FUEL TANK 2017 15 / 4 - ENGINE AND FUEL TANK Summary ENGINE ....................15 4.1.1 Engine tuning and maintenance ...........15 4.1.2 Removal of the engine ..............15 TANK ....................16 4.2.1...
  • Page 16 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 4 - ENGINE AND FUEL TANK 2017 16 / 4. Remove the pulley (5) from the engine crank- shaft. Identify and undo the three screws (6) and the screws (7) that fasten the engine to the chas-...
  • Page 17 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 4 - ENGINE AND FUEL TANK 2017 17 / 3. Close the fuel tap (4), remove the clamp (5) and disconnect the outlet pipe from the tap (6). 4. Prepare a suitable container, open the tap (4) and collect all the fuel in the tank and in the tank connection pipe.

  • Page 18: Transmission

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 5 - TRANSMISSION - WHEELS - STEERING 2017 18 / 5 - TRANSMISSION - WHEELS - STEERING Summary TRANSMISSION .................18 5.1.1 Replacing and adjusting the upper belt .........18 5.1.2 Replacing and adjusting the lower belt .........19 5.1.3...

  • Page 19: Replacing And Adjusting The Lower Belt

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 5 - TRANSMISSION - WHEELS - STEERING 2017 19 / 2. Remove the engine air filter cover (4), which would prevent the passage of the belt 3. Undo the screw (5) and the joint head (6).
  • Page 20 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 5 - TRANSMISSION - WHEELS - STEERING 2017 20 / 3. Remove the right rear guard (5) fixed by the rear screw (6), by a screw on the right side (7) and a top screw (8).
  • Page 21 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 5 - TRANSMISSION - WHEELS - STEERING 2017 21 / 6. Disconnect all electromagnetic clutch cables. 7. After freeing the blade drive belt from the pul- ley (15), undo the screw (16) and remove the electromagnetic clutch (17).

  • Page 22: Adjusting The "Neutral" Gear

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 5 - TRANSMISSION - WHEELS - STEERING 2017 22 / 5.1.3 Adjusting the “neutral” gear The "neutral" return mechanism on the transaxle is designed to move the command to a "neutral"...

  • Page 23: Adjusting The Transmission Cable

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 5 - TRANSMISSION - WHEELS - STEERING 2017 23 / a) Adjusting the parking brake Adjustment is achieved by tuning the register (1) of the control cable (2). The parking brake is adjusted correctly when it stops the hydrostatic unit and activates the safety microswitch.

  • Page 24: Transmission Unit Maintenance

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 5 - TRANSMISSION - WHEELS - STEERING 2017 24 / 3. Connect the front head (5) to the lever (6) us- ing the central hole (6a). 4. Press the foot pedal to stroke end whilst in for-...
  • Page 25 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 5 - TRANSMISSION - WHEELS - STEERING 2017 25 / a) Changing the oil and oil filter 1. Undo the three 1/4” screws (1) and remove the filter guard (2). Remove any debris from around the perimeter of the filter.

  • Page 26: Removing The Transmission Unit

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 5 - TRANSMISSION - WHEELS - STEERING 2017 26 / c) Bleeding the oil circuit Because of the effects air has on the efficiency of the hydrostatic transmissions, it is essential to bleed it from the system.
  • Page 27 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 5 - TRANSMISSION - WHEELS - STEERING 2017 27 / 2. Release the parking brake spring (2). 3. Unhook the split pin (3) and disconnect the head (4) of the drive control cable.

  • Page 28: Wheels And Tyres

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 5 - TRANSMISSION - WHEELS - STEERING 2017 28 / 5.2 WHEELS AND TYRES 5.2.1 Removing and replacing the rear wheels • Lift the rear part of the machine 2.3.3]. The rear wheels (1) are held by a snap ring (2) which can be removed with a screwdriver after removing the cap (3).

  • Page 29: Replacement And Repair Of Tyres

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 5 - TRANSMISSION - WHEELS - STEERING 2017 29 / 1. Remove each bearing (1) using a 10 - 12 mm diameter round bar (2); insert it from the op- posite side and hammer it on various points around the internal circumference of the bear- ing.

  • Page 30: Steering

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 5 - TRANSMISSION - WHEELS - STEERING 2017 30 / 5.3 STEERING 5.3.1 Toe-in adjustment The exact toe-in is obtained with a centre dis- 510 mm tance of 510 mm, measured between the centres of the pins (1) of the wheel connection rod (2).

  • Page 31: Adjusting The Steering Stroke Ends

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 5 - TRANSMISSION - WHEELS - STEERING 2017 31 / 5.3.3 Adjusting the steering stroke ends This adjustment limits the steering angle, avoiding interference with other parts of the machine when at maximum steering angle, and is performed in two steps.
  • Page 32 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 5 - TRANSMISSION - WHEELS - STEERING 2017 32 / 1. Loosen the four screws (1). 2. Move the whole crown (3) support plate (2) forward or backward to eliminate any clear-...

  • Page 33: Prearrangement For Accessibility

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 6 - CUTTING DECK AND COLLECTION 2017 33 / 6 - CUTTING DECK AND COLLECTION Summary PREARRANGEMENT FOR ACCESSIBILITY ........33 6.1.1 General information ..............33 6.1.2 Verticalisation of the cutting deck ..........33 6.1.3...

  • Page 34: Cutting Deck And Collection

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 6 - CUTTING DECK AND COLLECTION 2017 34 / 2. Free the belt (2) from the three clutch (3), drive (4) and tensioner (5) pulleys, leaving it around the cutting deck pulley (6) only.

  • Page 35: Removal Of The Cutting Deck

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 6 - CUTTING DECK AND COLLECTION 2017 35 / To return the cutting deck to the working position, follow the above op- erations in the reverse order, taking care to properly reinstate the belt (2) around the clutch pulley (3), the clutch pulley (4) and the tensioner (5 ), according to the diagram indicated below.

  • Page 36: Interventions On The Cutting Deck

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 6 - CUTTING DECK AND COLLECTION 2017 36 / To reassemble the cutting deck, repeat the above operations in the reverse order, taking care to keep the forks lowered so as to ease the insertion of the pivot arms.
  • Page 37 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 6 - CUTTING DECK AND COLLECTION 2017 37 / A badly sharpened blade causes grass to be- come yellow and reduces grass collection capa- bility; if not balanced, excessive vibration can be caused during use.

  • Page 38: Blade Control Belt Replacement

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 6 - CUTTING DECK AND COLLECTION 2017 38 / 6.2.2 Blade control belt replacement • Follow steps 1 to 10 of the "Verticalisation of the cutting deck” procedure 6.1.2]. With the cutting deck in the vertical position, loos- en the screw (1) and remove the belt guide (2) to free the belt (3) from the pulley (4).

  • Page 39: Replacing And Adjusting The Blade Connection Belt

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 6 - CUTTING DECK AND COLLECTION 2017 39 / 4. In different values are detected, loosen the nut (8) and turn the handle (9) screwing or unscrewing it on the bolt (10) until the correct value is reached.
  • Page 40 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 6 - CUTTING DECK AND COLLECTION 2017 40 / 3. Undo the screw (5) and remove the eccentric belt guide pin (6). 4. Completely loosen the nuts (7) on the adjust- ment screw (8) so as to allow ample move- ment of the tensioner pulley (10) plate (9).

  • Page 41: Removing The Cutting Deck Flanged Supports

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 6 - CUTTING DECK AND COLLECTION 2017 41 / 6.2.5 Removing the cutting deck flanged supports • Follow steps 1 to 5 of the "Replacing the blade connection belt” procedure 6.2.4].
  • Page 42 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 6 - CUTTING DECK AND COLLECTION 2017 42 / 2. Undo the three screws (4) fastening the sup- port plate (5) to the drive pulley flanged sup- port (6). 3. Remove the support plate (5), fixed by two screws (7) on the right, two screws (8) on the left and two front screws (9).

  • Page 43: Flanged Supports Maintenance

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 6 - CUTTING DECK AND COLLECTION 2017 43 / c) Reassembly of the flanged supports To reassemble, follow the operations described above in the reverse order, taking care to: 90° • Tighten...

  • Page 44: Replacing The Entrainment Plate Stud Bolts

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 6 - CUTTING DECK AND COLLECTION 2017 44 / 6.2.7 Replacing the entrainment plate stud bolts Deformed stud bolts can be replaced by follow- ing the instructions below to ensure the proper execution of the work.

  • Page 45: Setting The Electromagnetic Clutch Air Gap

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 6 - CUTTING DECK AND COLLECTION 2017 45 / 6.2.9 Setting the electromagnetic clutch air gap WARNING! - This adjustment must be carried out if the blades do not stop within 5 seconds of disengagement.

  • Page 46: Collector Channel

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 6 - CUTTING DECK AND COLLECTION 2017 46 / 6.3 COLLECTOR CHANNEL 6.3.1 Removal of the collector channel • Follow all steps of the "Removing the cutting deck” procedure 6.1.3]. 1. Unscrew the three nuts (1) fixing the rear of the collector (2) in place.
  • Page 47 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 6 - CUTTING DECK AND COLLECTION 2017 47 / 2. Extract the pin (4) from both sides using a suit- ably sized pin punch. 3. Extract the cotter pin (5) and remove the side catcher support connection pin (6).

  • Page 48: Troubleshooting

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 7 - ELECTRICAL SYSTEM 2017 48 / 7 - ELECTRICAL SYSTEM Summary TROUBLESHOOTING .................48 7.1.1 Electrical system problem table ............48 7.1.2 Safety device intervention table ............49 7.1.3 Equipment ..................50 7.1.4 Electrical measure gauges ............50 7.1.5...

  • Page 49: Safety Device Intervention Table

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 7 - ELECTRICAL SYSTEM 2017 49 / 7.1.2 Safety device intervention table The safety devices intervene on the engine, preventing ignition or stopping it in the event where the required machine operating conditions are no longer met.

  • Page 50: Equipment

    STIGA does not recommend attempting to repair electrical components. Most do not lend themselves to repair and you would have more money invested in “time of repair” than the part would cost and the results may not be as good.

  • Page 51: Electrical Measurements

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 7 - ELECTRICAL SYSTEM 2017 51 / Meters of this kind are available in many forms and all change functions and ranges with switches, or by plugging test leads into different jacks. Multimeters are available in two basic types, Analog and Digital.

  • Page 52: System And Component Descriptions

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 7 - ELECTRICAL SYSTEM 2017 52 / IMPORTANT - Disconnect the battery from the machine when performing Ohmmeter tests or damage to the Ohmmeter may occur. IMPORTANT - An ohmmeter reads the resistance of whatever component is connected between the test leads.

  • Page 53: Battery

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 7 - ELECTRICAL SYSTEM 2017 53 / 7.2.2 Battery NOTE - The machine comes equipped with a maintenance-free battery that requires no regular maintenance except the cleaning of the terminals. DANGER!
  • Page 54 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 7 - ELECTRICAL SYSTEM 2017 54 / • If you use a 12 volt automatic battery charg- Voltage (OCV) Charge % Charging time er, select a good quality charger with mini- 12.60...

  • Page 55: Switches

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 7 - ELECTRICAL SYSTEM 2017 55 / 5. Make the final jumper cable connection to the engine block or the furthest ground point away from the discharged battery. WARNING! - Make sure the cables are clear of any moving engine parts before start- ing the engine.
  • Page 56 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 7 - ELECTRICAL SYSTEM 2017 56 / b) Normally closed switch (NC) To test a normally closed switch connect the ohmmeter between the switch terminals. • The meter should indicate a closed circuit (zero resistance «0»).

  • Page 57: Ignition Switch

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 7 - ELECTRICAL SYSTEM 2017 57 / 7.2.4 Ignition switch NOTE - Refer to the wiring diagram of the machine (continuity diagram) to determine switch func- tions and test using the methods described.

  • Page 58: Fuses

    There are also a number of mechanical issues that may cause the problem. The starter solenoid used on STIGA machines is a sealed unit used to actuate the starter motor on the engines. These solenoids may have three or four connections. The two major connections carry high current to operate the starter motor.

  • Page 59: Relay And Fuse Operating Faults

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 7 - ELECTRICAL SYSTEM 2017 59 / 7.2.7 Relay and Fuse operating faults The machine has several fuses and relays, col- lected in a box, accessible by tilting the driver's seat.

  • Page 60: Electromagnetic Clutch

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 7 - ELECTRICAL SYSTEM 2017 60 / To check a diode, isolate if from the circuit by disconnecting one end. With a multitester set on the lowest ohms scale setting, measure the resistance in one direction, reverse the test leads, and measure in the other direction.

  • Page 61: Functional Checks

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 7 - ELECTRICAL SYSTEM 2017 61 / 7.3 FUNCTIONAL CHECKS 7.3.1 General system checks Make sure all switches are in the correct ignition position: : 1) PTO disengaged; 2) Hydrostatic transmission in “neutral”;...
  • Page 62 WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 7 - ELECTRICAL SYSTEM 2017 62 / • PTO switch test. The PTO switch is a push/pull switch with normally open and closed contacts. Test for transfer of power with a voltmeter. The switch contacts should be tested using an ohmmeter after discon- necting the wiring connector.

  • Page 63: Electrical Wiring Diagrams

    WORKSHOP MANUAL Chapter EDITION PAGE MPV 320W / 520W 7 - ELECTRICAL SYSTEM 2017 63 / 7.4 ELECTRICAL WIRING DIAGRAMS 7.4.1 Wiring layout...
  • Page 64 GGP Italy S.p.A - Via del Lavoro, 6 - 31033 Castelfranco Veneto (TV) - Italy www.stiga.com...

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