Tennant M20 Operator's Manual

Tennant M20 Operator's Manual

Gas/lpg scrubber−sweeper
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M20
(Gas/LPG)
Scrubber−Sweeper
English EN
Operator Manual
331391
To view, print or download
Rev. 11 (03-2012)
the latest manual, visit:
*331391*
www.tennantco.com/manuals

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Summary of Contents for Tennant M20

  • Page 1 (Gas/LPG) Scrubber−Sweeper English EN Operator Manual 331391 To view, print or download Rev. 11 (03-2012) the latest manual, visit: *331391* www.tennantco.com/manuals...
  • Page 2 Installation Date − INTENDED USE The M20 is an industrial rider machine designed to sweep/scrub hard surfaces (concrete, asphalt, stone, synthetic, etc). Typical applications include industrial warehouses, manufacturing facilities, distribution facilities, stadiums, arenas, convention centers, parking facilities, transportation terminals, and construction sites.
  • Page 3: Table Of Contents

    ....ENGINE HARNESS FUSES AND RELAYS ....CIRCUIT BREAKERS (ec−H20) ..M20 331391 (3−2013)
  • Page 4 ... . . FREEZE PROTECTION (MACHINES WITHOUT ec−H20 SYSTEM) ..FREEZE PROTECTION (MACHINES WITH ec−H20 SYSTEM) ..PRIMING THE ec−H20 SYSTEM ..M20 331391 (3−2013)
  • Page 5: Important Safety Instructions − Save These Instructions

    WARNING: Lift arm pinch point. Stay clear of hopper lift arms. WARNING: Burn hazard. Hot surface. Do NOT touch. CAUTION: LPG engine will run for a few seconds after key is turned off. Apply parking brake before leaving machine. M20 331391 (3−2013)
  • Page 6: Safety Precautions

    − Do not pick up burning or smoking − Do not modify the machine from its debris, such as cigarettes, matches, or original design. − Use Tennant supplied or approved hot ashes. − Use brakes to stop machine. replacement parts.
  • Page 7 Lift arm pinch point. turned off. Apply parking brake before Stay clear of hopper leaving machine. lift arms. Located next to the ignition switch on Located on both the instrument panel. (LPG machines hopper lift arms. only) 10783 M20 331391 (3−2012)
  • Page 8 Do not touch. WARNING LABEL − Raised hopper may fall. Engage hopper support pin. Located on the side of the bumper, on the exhaust shield, Located on both hopper lift arms. and on the hydraulic reservoir. 10783 M20 331391 (3−2013)
  • Page 9: Operation

    I. FaST carton, or ES detergent tank, or U. Vacuum wand (option) ec−H2O System Module compartment V. Hopper safety pin (option) W. Engine cover J. Solution tank cover X. Fuel tank K. Operator seat L. Spray wand − nozzle behind seat (option) M20 331391 (4−10)
  • Page 10: Controls And Instruments

    H. Hopper door open / close switch I. Hopper raise / lower switch J. Touch panel K. Operating / Hazard Lights switch L. Spray nozzle switch (option) M. Engine indicator lights N. ec−H2O system indicator light (option) M20 331391 (4−10)
  • Page 11: Touch Panel

    I. Solution decrease button (−) J. Brush pressure increase button (+) K. Brush pressure decrease button (−) L. Filter shaker button M. Sweep vacuum fan button N. Side brush button (option) O. Engine speed button P. Supervisor control buttons M20 331391 (4−10)
  • Page 12: Symbol Definitions

    Engine oil pressure (0000−0159) Filter shaker Engine oil pressure (0160− Sweep vac fan Check engine Scrub vac fan/squeegee Parking Brake (0160− 1−STEP sweep Horn 1−STEP scrub Jack point ES (extended scrub) Unleaded fuel only FaST (foam scrubbing) ec−H2O (option) M20 331391 (4−10)
  • Page 13: Operation Of Controls

    CHARGING SYSTEM INDICATOR The Charging system indicator comes on when If this indicator comes on, contact a Tennant the alternator is not operating within the normal service representative. range. If this indicator comes on, stop the machine immediately and correct the problem.
  • Page 14: Setting The Engine Speed

    The light next to the button will turn off. The machine will default to the last setting used when it is powered on or off. M20 331391 (9−06)
  • Page 15: Hour Meter

    The Supervisor Control buttons are for accessing the configuration and diagnostic modes. Only Press the bottom of the Operating / hazard light properly trained service personnel and TENNANT switch to turn on the hazard light, headlights, and representatives should access these modes.
  • Page 16: Operator Seat

    2. Release the Steering column tilt handle. Increase firmness: Turn the weight adjustment knob clockwise. Decrease firmness: Turn the weight adjustment knob counterclockwise. Use the gauge next to the weight adjustment knob to help determine seat firmness for the operator. M20 331391 (9−06)
  • Page 17: Brake Pedal

    SQUEEGEE PROTECTORS (OPTION) The rear and side squeegee protectors help protect the rear squeegee from being damaged. To engage the rear squeegee protector, pull the pin, lower the protector bar, and reinsert the pin. M20 331391 (9−06)
  • Page 18: How The Machine Works

    The 1−STEP Sweep button operates all the dry important role in determining the type of brushes sweeping functions (without scrubbing). The to use. Contact a Tennant representative for 1−STEP Scrub button operates all the scrubbing specific recommendations. functions. (The machine also sweeps while PolyPro brush −...
  • Page 19: While Operating The Machine

    0_ C (32_ F). The maximum rated incline for scrubbing with the machine is 10_. The maximum rated incline during transport of the machine is 14%. M20 331391 (3−2013)
  • Page 20: Pre−Operation Checklist

    - Check the condition of the hopper dust filter and seals. - Clean the hopper and the debris screen. - Check the squeegee hose for debris or blockage. - Check the squeegees for damage, wear, and deflection adjustment. M20 331391 (3−2013)
  • Page 21: Changing The Lpg Tank

    9. Slowly open the tank service valve and check for leaks. If a leak is found, immediately close the service valve and inform the appropriate personnel. M20 331391 (3−2013)
  • Page 22: Starting The Machine

    FOR SAFETY: Before leaving or servicing machine, do not park near combustible materials, dust, gases, or liquids. Stop on level surface, set parking brake, turn off machine, and remove key. M20 331391 (10−06)
  • Page 23: Filling The Solution Tank

    NOTE: Pour a recommended foam control solution into the recovery tank if excessive foam appears. For specific detergent recommendations, contact a TENNANT representative. NOTE: Do not use the FaST or ec−H2O system when there are conventional cleaning detergents in the solution tank. Drain, rinse, and refill the solution tank with clear cool water before operating the FaST or ec−H2O system.
  • Page 24: Es (Extended Scrub) Mode With Auto−Fill

    WARNING: Flammable materials can cause an explosion or fire. Do not use ATTENTION: For ES Scrubbing, only use flammable materials in tank(s). recommended low−foaming cleaning detergents. Machine damage due to the use of improper detergent will void the manufacturer’s warranty. M20 331391 (9−06)
  • Page 25: Setting Scrub Modes

    The machine will default to the last setting used when it is powered on or off. NOTE: When the ES system is turned on there is a slight delay before the ES pump begins operating. M20 331391 (4−10)
  • Page 26: Setting Solution Flow

    The middle setting (two lights) allows solution AND detergent flow. The lowest setting (one light) allows solution flow WITHOUT adding detergent. Detergent does not have to be continuously added with the solution flow to attain effective scrubbing results. M20 331391 (4−10)
  • Page 27: Scrubbing

    FOR SAFETY: When using machine, go slow on inclines and slippery surfaces. NOTE: The squeegee automatically rises when the machine is driven backwards. This prevents damaging the squeegee. NOTE:The ec−H2O system indicator light will not turn on until the machine starts scrubbing. M20 331391 (4−10)
  • Page 28: Double Scrubbing

    Press the 1−STEP Scrub button, and then the Scrub vacuum fan/squeegee button. The light above the Scrub vacuum fan/squeegee button will turn off, the squeegee will rise, and the vacuum fan will stop operating. Scrub the heavily soiled area. M20 331391 (4−10)
  • Page 29: Water Pickup Mode (No Scrubbing)

    Side brush option (S/N 0179− ): Before squeegee will lower, and the vacuum fan will start sweeping, remove the side brush bumper. Pull the operating. Pick up the water or non−flammable pins and remove the squeegee bumper. liquid spill. M20 331391 (1−10)
  • Page 30 4. Release the Directional pedal and press the Brake pedal to stop the machine. 5. Press the 1−STEP Sweep button to stop sweeping. The light next to the button will turn off and the sweeping functions will stop after a short delay. M20 331391 (9−06)
  • Page 31: Emptying The Hopper

    2500 mm (98 in). 4. Slowly back the machine up to the debris container. FOR SAFETY: When using machine, use care when reversing machine. Move machine with care when hopper is raised. M20 331391 (3−2013)
  • Page 32: Engaging Hopper Support Pin

    Hopper raise/lower switch until the hopper is completely lowered. 3. Set the parking brake. 4. Remove the hopper support pin from the storage tube. WARNING: Lift arm pinch point. Stay clear of hopper lift arms. M20 331391 (3−2013)
  • Page 33: Removing The Hopper Dust Filter

    CLEANING THE HOPPER DUST FILTER section of this manual. 8. Place the cleaned or new dust filter into the hopper. Position the filter screen side up as shown below. 4. Unhook the handles from the filter cover. M20 331391 (3−2013)
  • Page 34: Cleaning The Hopper And Debris Screen

    See ENGAGING HOPPER SUPPORT PIN section of this manual. WARNING: Raised hopper may fall. Engage hopper support pin. WARNING: Lift arm pinch point. Stay clear of hopper lift arms. 3. Turn off the machine. M20 331391 (9−06)
  • Page 35 11. Disengage the hopper support pin and lower the hopper. See the DISENGAGING HOPPER SUPPORT PIN section of this manual. 7. Turn off the machine. 8. Flush dirt and debris from the debris hose and debris screen and out into the hopper. M20 331391 (3−2013)
  • Page 36: Draining And Cleaning The Recovery Tank

    2. Place the recovery tank drain hose nozzle next to a floor drain. NOTE: DO NOT use steam to clean tanks. Excessive heat can damage tanks and components. 5. Remove the vacuum screen from the recovery tank and rinse the screen. M20 331391 (3−2013)
  • Page 37: Draining The Recovery Tank With The Drain Plug

    Allow the recovery tank to drain. WARNING: Lift arm pinch point. Stay clear of hopper lift arms. FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, turn off machine, and remove key. M20 331391 (3−2013)
  • Page 38 NOTE: If necessary, turn the handle clockwise for a tighter fit and counterclockwise for a looser fit. 5. Remove the recovery tank drain hose from the back of the recovery tank, then rinse the dirt and debris from the hose into the tank. M20 331391 (3−2013)
  • Page 39: Draining And Cleaning The Solution Tank

    1. Open the solution tank cover(s). 10. Remove the hopper support pin and insert it into the storage tube. Then lower the hopper. 11. Close the recovery tank cover. 2. Place the solution tank drain hose nozzle next to a floor drain. M20 331391 (3−2013)
  • Page 40 7. Reinstall the solution tank drain hose onto the toward the solution tank drain. back of the recovery tank. 8. Close the solution tank cover(s). 5. Rinse the float sensor and the screen filter. Allow the solution tank to drain. M20 331391 (3−2013)
  • Page 41: Fault Indicator(S)

    *NOTE: Mitsubishi engines machine serial number 0500 and above will display a “check engine” indicator and will automatically shut the machine off if the coolant is too hot. M20 331391 (3−2013)
  • Page 42: Conditions / Warnings

    C5: No ES/FaST ES and FaST systems unavailable Only machines equipped with ES or FaST system can be operated in these modes. C6: No Side Sweep Side sweep unavailable Side sweep not allowed to operate by itself. M20 331391 (9−06)
  • Page 43: Options

    5. Twist the off/on knob to turn on the wand. 6. When finished cleaning, place the spray nozzle and wand back into their storage locations. 7. Press the bottom of the Spray nozzle switch to turn off the water supply. M20 331391 (3−2013)
  • Page 44: Vacuum Wand (Option)

    Consult with your 10. Disassemble the vacuum wand assembly and regulatory authorities for exposure return it to the storage bag. limits. Keep engine properly tuned. 11. Reattach the vacuum hose to the hopper lift arm. M20 331391 (5−08)
  • Page 45: Machine Troubleshooting

    Main brushes not properly adjusted Adjust brushes Debris caught in main brush drive Remove debris from main brush mechanism drive mechanism Main and/or side brush drive failure Call Tennant service representative Hopper is full Empty hopper Hopper lip skirts worn or damaged Replace lip skirts...
  • Page 46 Clogged filter screen Drain solution tank, remove and clean filter screen Blown fuse Call Tennant service representative Faulty solution pump Call Tennant service representative ES System does not operate ES button is turned off Turn on ES button...
  • Page 47: Maintenance

    MAINTENANCE MAINTENANCE M20 331391 (5−08)
  • Page 48: Maintenance Chart

    − Engine, GM Drain oil from electronic (S/N 0047−0499) pressure regulator (EPR) − 13, 20 Tires Check for damage Rear squeegee casters Lubricate − Rear squeegee Check leveling − Scrub head skirt Check for damage or wear M20 331391 (3−2013)
  • Page 49 Clean and tighten battery cable connections − 1000 FaST system filters Replace (S/N 0146− Hours − Engine, Mitsubishi Replace spark plugs (S/N 0500− − Engine Inspect PCV system − 1, 19 Radiator hoses Check for cracks or deterioration M20 331391 (3−2013)
  • Page 50 TennantTrue premium hydraulic fluid or equivalent Water and ethylene glycol anti-freeze, −34_ C (−30_ F) ..Special lubricant, Lubriplate EMB grease (Tennant part number 01433−1) NOTE: More frequent maintenance intervals may be required in extremely dusty conditions. M20 331391 (3−2013)
  • Page 51: Lubrication

    (3.7 qt) with oil filter. The engine oil capacity for Mitsubishi engines (machines serial number 0500 and above) is 5.4 L (5.75 qt) with oil filter. SQUEEGEE CASTER BEARINGS Lubricate the squeegee caster bearings after every 100 hours of operation. M20 331391 (3−2013)
  • Page 52: Hopper Lift Arm Pivots

    The torque tube grease fittings on the operator side of the machine are located beneath the fuel tank. On the other side of the machine the torque tube grease fittings are located beneath the propel pump. M20 331391 (9−06)
  • Page 53: Hydraulics

    (left photo) on the hydraulic fluid label if originally equipped with TennantTrue premium hydraulic fluid. Replace the hydraulic strainer outlet after every WARNING: Burn hazard. Hot surface. Do 2400 hours of operation. NOT touch. TennantTrue Fluid Previous Fluid M20 331391 (3−2013)
  • Page 54: Hydraulic Fluid

    Consult a physician immediately if injury results If using a locally-available hydraulic fluid, be sure from escaping hydraulic fluid. Serious infection or the specifications match Tennant hydraulic fluid reaction can occur if proper medical treatment is specifications. Substitute fluids can cause not given immediately.
  • Page 55: Engine

    When filling the cooling system, open the drain cocks to bleed the air from the system for machines serial number 0046 and below. (Machines serial number 0047 and above do not have drain cocks). M20 331391 (3−2013)
  • Page 56: Air Filter

    FOR SAFETY: When servicing machine, keep cooler fins to cool before cleaning. flames and sparks away from fuel system service area. Keep area well ventilated. AIR FILTER Replace the air filter after every 400 hours of operation. M20 331391 (3−2013)
  • Page 57: Electronic Pressure Regulator (Lpg) (For Machines Serial Number 0047 − 0499)

    Location of fuel filter on machines serial number Drain oil buildup in the LPG vaporizer after every 0047 and above. 100 hours of operation. FOR SAFETY: When servicing machine, keep flames and sparks away from fuel system service area. Keep area well ventilated. M20 331391 (3−2013)
  • Page 58: Engine Belt

    SPARK PLUGS − MITSUBISHI ENGINES WARNING: Moving belt and fan. Keep (S/N 0500− away. Replace the spark plugs after every 1000 hours of operation. PCV SYSTEM Inspect the PCV system after every 1000 hours of operation. M20 331391 (3−2013)
  • Page 59: Timing Belt − Gm Engines (S/N 0000 − 0499)

    50 hours of operation and after every 800 hours after that. Do not remove the vent plugs from the battery or add water to the battery. FOR SAFETY: When servicing machine, avoid contact with battery acid. M20 331391 (02−2013)
  • Page 60: Engine Harness Fuses And Relays

    12 VDC, 40 A Reverse 12 VDC, 40 A Horn 12 VDC, 40 A Shutdown 12 VDC, 40 A Starter 12 VDC, 40 A Not Used 12 VDC, 40 A Not Used 12 VDC. 40 A Spray Wand (Separate Relay) M20 331391 (4−10)
  • Page 61: Cleaning The Hopper Dust Filter

    Never use more than 690 kPa (100 psi) of air pressure and never hold the nozzle closer than 50 mm (2 in) to the filter. This may be done with the dust filter in the machine. M20 331391 (3−2013)
  • Page 62: Thermo−Sentry

    If there is a fire in the hopper, the Thermo−Sentry stops the vacuum fan and 1. Raise the scrub head. cuts off the air flow. The Thermo−Sentry automatically resets after cooling down. 2. Open the outer brush doors. M20 331391 (3−2013)
  • Page 63 5. Pull the brushes out from the scrub head. 8. Reinstall the brush idler plates. 9. Close the inner and outer brush doors. 10. Check the brush pattern and adjust if needed after rotating them. Refer to CHECKING AND ADJUSTING THE MAIN BRUSH PATTERN. M20 331391 (3−2013)
  • Page 64: Checking The Main Brush Pattern

    6. Observe the brush patterns. If the brush pattern is the same width across the entire length of each brush and both brushes are the same width, no adjustment is necessary. 10653 10355 M20 331391 (3−2013)
  • Page 65: Adjusting The Main Brush Taper

    3. Tighten the mounting bolts. 4. Recheck the pattern. Readjust if necessary. 2. Recheck the pattern. Readjust if necessary. M20 331391 (3−2013)
  • Page 66: Side Brush (Option)

    4. Remove the side brush from underneath the side brush assembly. 5. Place the new side brush underneath the side brush assembly and lift the side brush up onto the side brush hub until the brush locks onto the hub. M20 331391 (3−2013)
  • Page 67: Fast System

    FaST−PAK 6. Connect the FaST supply hose to the carton out from the compartment and discard. FaST−PAK hose connector. 7. Scrub with the FaST system for a few minutes to allow the detergent to reach maximum foaming. M20 331391 (9−06)
  • Page 68: Cleaning The Fast Supply Hose Connector

    Replace the FaST system filters after every 1000 hours of operation. Empty the solution tank before Remove the filter screen bowl and clean the filter replacing the filters. screen after every 50 hours of operation. Empty the solution tank before removing the filter. M20 331391 (3−2013)
  • Page 69: Ec−H2O Module Flush Procedure

    NOTE: The module will automatically shut off when the flush cycle is complete (approx. 7 minutes). The module must run the full 7 minute cycle in order to reset the system indicator light and alarm. M20 331391 (3−2013)
  • Page 70: Cleaning The Ec−H2O Filter Screen

    NOTE: The outlet and intake hoses must be down between the ec−H2O assembly and the bracket so they are not pinched or damaged when the operator seat cover is closed. 12. Close the operator seat cover. M20 331391 (4−10)
  • Page 71: Squeegee Blades

    7. Remove the rear squeegee. 3. Remove both mounting knobs from the rear squeegee assembly. 4. Turn on the machine, raise the scrub head, and turn off the machine. 5. Remove the rear squeegee assembly from the machine. M20 331391 (3−2013)
  • Page 72 15. Tighten the front retaining band tension latch. 16. Reinstall the rear squeegee assembly onto the machine. 17. Check and adjust the rear squeegee if necessary. Refer to ADJUSTING THE REAR SQUEEGEE BLADE DEFLECTION and LEVELING THE REAR SQUEEGEE sections of this manual. M20 331391 (3−2013)
  • Page 73: Replacing Or Rotating The Side Squeegee Blades

    6. Install the new or rotated squeegee blades. 4. Remove the retaining band from the side squeegee assembly. 7. Reattach the side squeegee retaining band to the side squeegee assembly. M20 331391 (3−2013)
  • Page 74: Replacing The Side Brush Squeegee Blade (S/N 0000−0178) (Option)

    2. Pull the pin from the squeegee bumper and open the squeegee bumper. 5. Slide the new squeegee into the side brush assembly. 6. Reinstall the squeegee retainer and clevis pin. 7. Close the squeegee bumper and reinsert the pin. M20 331391 (3−2013)
  • Page 75: Replacing Or Adjusting The Side Brush Squeegee Blade (S/N 0179− ) (Option)

    3. Open the retaining band tension latch. 6. Reinstall the retaining band tension latch. 7. Reinstall the squeegee bumper and reinsert the pins. M20 331391 (3−2013)
  • Page 76: Leveling The Rear Squeegee

    The best deflection is when the squeegee wipes the floor dry with a minimal amount of deflection. NOTE: Make sure the squeegee is level before adjusting the deflection. See LEVELING THE REAR SQUEEGEE. M20 331391 (3−2013)
  • Page 77: Skirts And Seals

    100 hours of operation. The skirts should be between 0 to 6 mm (0 to 0.25 in) from the floor when the scrub head is down. RECOVERY TANK SEAL Check the recovery tank cover seal for damage and wear daily. M20 331391 (3−2013)
  • Page 78: Brakes And Tires

    100 hours of operation. FRONT WHEEL Torque the front wheel nuts twice in the pattern shown to 122 to 149 Nm (90 to 110 ft lb) after the first 50 hours of operation, and after every 800 hours there after. M20 331391 (3−2013)
  • Page 79: Pushing, Towing, And Transporting The Machine

    AND is 380 mm (15 in) or less from the ground. 4. To winch the machine onto the truck or trailer, attach the winching chains to the holes in the rear jacking brackets behind the rear tires. M20 331391 (3−2013)
  • Page 80 FOR SAFETY: When unloading machine off truck or trailer, use winch. Do not drive the machine off the truck or trailer unless the loading surface is horizontal AND 380 mm (15 in) or less from the ground. M20 331391 (3−2013)
  • Page 81: Machine Jacking

    FOR SAFETY: When servicing machine, block machine tires before jacking machine up. Use a hoist or jack that will support the weight of the machine. Jack machine up at designated locations only. Support machine with jack stands. M20 331391 (3−2013)
  • Page 82: Freeze Protection (Machines Without Ec−H20 System)

    Set be drained from the solution tank. the cap aside. NOTE: Storing or transporting machines equipped with the ES or the FaST system in freezing temperatures requires special procedures. Consult a TENNANT representative for more information. M20 331391 (4−10)
  • Page 83 12. Insert the intake and outlet hoses down between the ec−H2O assembly and the bracket. 13. Return the intake flush hose to the storage bag behind the operator seat. M20 331391 (4−10)
  • Page 84: Priming The Ec−H20 System

    8. Disconnect the outlet flush hose from the ec−H2O system outlet hose and return the flush hose to the storage bag. 9. Reconnect the ec−H2O system outlet hose to the hose to the scrub head. M20 331391 (4−10)
  • Page 85: Specifications

    Minimum aisle turn 2790 mm (110 in) Travel speed forward (maximum) 12.9 Km/h (8 mph) Travel speed reverse (maximum) 4.8 Km/h (3 mph) Maximum rated climb and descent at GVWR Maximum rated climb and descent angle when scrubbing M20 331391 (3−2013)
  • Page 86: Hydraulic System

    Fuel tank: 15 kg (33 lb) Radiator: 3.8 L (1 gal) Idle speed, no load (Fast) governed speed, under Firing order load 1350 + 50 rpm 2300 + 50 rpm 1−3−4−2 Engine lubricating oil with filter 5.4 L (5.75 qt) 5W30 SAE−SG/SH M20 331391 (3−2013)
  • Page 87: Tires

    SYSTEM Item Measure Solution pump 12 Volt DC, 11A, 0.7 GPM & 1.4 GPM flow, (2 speeds), 75 psi high−pressure shutdown 2.65 LPM (0.7 GPM) − Low Solution flow rate 5.30 LPM (1.4 GPM) − High M20 331391 (3−2013)
  • Page 88: Machine Dimensions

    SPECIFICATIONS MACHINE DIMENSIONS Rear Squeegee 1300 mm (51 in) 1470 mm (58 in) Frame 2410 mm (roller to roller) (95 in) 1270 mm (50 in) Width (with side brush) 1470 mm (58 in) 1014751 M20 331391 (3−2013)

This manual is also suitable for:

M30 (gas/lpg)

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