Exmark METRO 21 Operator's Manual
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Exmark METRO 21 Operator's Manual

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METRO
21
®
For Serial Nos.
790,000 & Higher
Part No. 4500-400 Rev. A

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Summary of Contents for Exmark METRO 21

  • Page 1 METRO ® For Serial Nos. 790,000 & Higher Part No. 4500-400 Rev. A...
  • Page 2 Replacements may be ordered through the engine manufacturer. Exmark reserves the right to make changes or add improvements to its products at any time without incurring any obligation to make such changes to products manufactured previously.

  • Page 3: Introduction

    All Exmark parts are thoroughly tested and inspected before leaving the factory, however, attention is required on your part if you are to obtain the fullest measure of satisfaction and performance.

  • Page 4: Table Of Contents

    Contents Emptying the Fuel Tank and Cleaning the Fuel Filter (Kawasaki Units Only)............34 Introduction ............3 Waste Disposal ..........34 Safety ..............5 Storage ..............35 Safety Alert Symbol ......... 5 Preparing the Fuel System......35 Safe Operating Practices ........5 Preparing the Engine ........

  • Page 5: Safety

    Standards Institute in effect at the time of production • Become familiar with the safe operation of the Exmark designed and tested this lawn mower to offer equipment, operator controls, and safety signs. reasonably safe service; however, failure to comply •...
  • Page 6 Safety DANGER DANGER In certain conditions gasoline is extremely In certain conditions during fueling, static flammable and vapors are explosive. electricity can be released causing a spark which can ignite gasoline vapors. A fire or A fire or explosion from gasoline can burn explosion from gasoline can burn you and you, others, and cause property damage.
  • Page 7 Safety Operation • Never attempt to make wheel height adjustments while the engine is running. WARNING • Stop engine, wait for all moving parts to stop, remove the spark plug wire(s) and/or remove key. Operating engine parts, especially the – Before checking, cleaning or working on the muffler, become extremely hot.

  • Page 8: Maintenance And Storage

    Safety Maintenance and Storage • Be aware of the mower discharge path and direct discharge away from others. • Stop the engine and remove the spark plug wire(s) • Do Not operate the mower under the influence and/or remove key. Wait for all movement to of alcohol or drugs.

  • Page 9: Safety And Instructional Decals

    Exmark equipment dealer or labels. distributor or from Exmark Mfg. Co. Inc. • Replace all worn, damaged, or missing safety • Safety signs may be affixed by peeling off the signs.
  • Page 10 Safety 74-1970 For Self-Propelled Units (MSKA21, MSKA21CA, MSKA21B, MSKA21BCA, MSHN21, and MSHN21B) 1. Transmission speeds 2. Neutral 77-0500 103-6328 Common to All Units For MSKA21B and MSHN21B Units Only 1. Choke 4. Slow 2. Fast 5. Engine—stop 3. Continuous variable setting 93-7398 Common to All Units...
  • Page 11 Safety 109-8190 On MPKA21CA and MSKA21CA Units Only 1. Fast 3. Slow 2. Continuous variable setting 109-8191 On MPKA21CA, MSKA21CA, and MSKA21BCA Units Only 109-8194 On MSKA21BCA Units Only 1. Fast 3. Slow 2. Continuous variable 4. Engine—stop setting...

  • Page 12: Specifications

    Specifications Specifications Model Numbers Serial Nos: 790,000 and Higher MPKA21; MPKA21CA; MSKA21; MSKA21CA; MSKA21B; MSKA21BCA; MSHN21; MSHN21B Systems Cutting Deck • Cutting Width: 21 inches (53.3 cm) Engine • Blade Brake: When the blade engagement control • Engine Specifications: See your Engine Owner’s is moved to the disengaged position a friction Manual brake pad stops the rotation of the blades.

  • Page 13: Product Overview

    Product Overview Overall Length and Height at Product Overview 2 1/4 inch Cutting Height: Handle Setting Length Height High 60.50 inches 42.75 inches (153.7 cm) (108.6 cm) 64.25 inches 40.38 inches Medium (163.2 cm) (102.6 cm) 67.00 inches 37.88 inches (170.2 cm) (96.2 cm) Overall Length and Height at...

  • Page 14: Operation

    Operation Operation control lever. When this bail is released the unit will stop moving. Note: Determine the left and right sides of the Throttle-Choke Control machine from the normal operating position. The throttle-choke control is located on the left side Controls of the handles as shown in Figure 4.

  • Page 15: Pre-Start

    Operation Figure 5 1. Ground speed control Figure 7 MSHN21 and MSHN21B Units Fuel Shut-Off Valve 1. Fuel valve For MPKA21, MSKA21, and MSKA21B Units: The fuel shut off valve is installed on the fuel line For MPKA21CA, MSKA21CA, and MSKA21BCA midway between the fuel tank and the engine as Units:Do not have a fuel shut off valve.

  • Page 16: Operating Instructions

    Operation Make sure you understand the controls, their 1. Install the hardware in the lower holes in the locations, their functions, and their safety handle and latches as shown in Figure 8. requirements. 2. Install hardware in one of the three adjustment holes in the upper ends of each of the handle Refer to the Maintenance section and perform all the latches to obtain the desired handle height within...

  • Page 17: Stopping The Engine

    Operation For MSHN21 and MSHN21B Units: see Figure 7. MPKA21CA, MSKA21CA, and MSKA21BCA Units: Do Not have a fuel valve. 3. For MSHN21 MSHN21B, MPKA21, MSKA21, and MSKA21B Units: Move the throttle-choke control to the Choke position. Note: Do Not use the choke when the engine is warms up.
  • Page 18 Operation Note: If the blade does not stop within 3 Note: The blade control lever will release rapidly seconds after releasing the blade control bail, when the blade control bail is released. To avoid contact an Authorized Service Dealer. minor injury, keep hands clear of the blade control lever when the blade control bail is released.

  • Page 19: Adjusting The Cutting Height

    Operation DANGER If the blade brake clutch system is inoperative, the blade will continue to rotate when you release the blade control bail. Contact with the blade could occur, causing serious injury. • Check the BBC operation before each use. •...

  • Page 20: Using The Grass Bag

    Operation WARNING Adjusting the cutting height levers could bring your hands into contact with a moving blade. A moving blade can cause serious injury. • Stop the engine and wait for all movement to stop before adjusting the cutting height. •...

  • Page 21: Operating Tips

    Never open the door on the discharge tunnel death to the operator or bystanders. when the engine is running. Check the grass bag frequently. If it is damaged, install a new Exmark replacement Operating Tips bag. • Review the Safety section and read this manual Cut the grass until the bag is full.
  • Page 22 Operation • Overlap cutting swaths instead of cutting a full swath with each pass. • Set the cutting height on the front wheels one notch lower than the rear wheels. For example, set the front wheels at 2 1/4 inches (57 mm) and the rear wheels at the 2 3/4 inches (70 mm).

  • Page 23: Maintenance

    Maintenance Maintenance Note: Determine the left and right sides of the machine from the normal operating position. WARNING WARNING If you leave the wire on the spark plug, The engine can become very hot. Touching someone could accidentally start the engine. a hot engine can cause severe burns.

  • Page 24: Periodic Maintenance

    Maintenance Periodic Maintenance Check Engine Oil Level Service Interval: Before each use or daily 1. Stop engine and wait for all moving parts to stop. Make sure unit is on a level surface. 2. Check with engine cold. 3. Clean area around dipstick. Remove dipstick and wipe oil off.
  • Page 25 Maintenance 4. Tip the lawn mower onto its right side (see Figure 18 and Figure 19). Figure 20 1. Sail 3. Wear Figure 18 2. Flat 4. Slot Blade Brake Clutch Units Only 1. Accelerator 3. Blade Note: For the best performance, install a new 2.

  • Page 26: Check For Loose Hardware

    For Blade Brake Clutch Units: Install a sharp, balanced Exmark blade, the accelerator, the Note: Do Not operate the engine without the air anti-scalp cup, and the blade nuts. The sail of filter assembly;...

  • Page 27: Service Air Filter(Honda Units)

    Maintenance 2. Disconnect the wire from the spark plug (Figure 9). 3. Remove the two wing nuts that secure the cover (Figure 24). Figure 23 1. Cover 3. Paper air filter 2. Foam pre-cleaner 4. Air filter base 4. Remove the paper air filter and discard it as required.

  • Page 28: Change Engine Oil

    Maintenance 11. Dip the foam element in clean engine oil, then 11. Wipe up any spilled oil. squeeze out the excess oil. 12. Connect the wire to the spark plug. Note: Excess oil in the foam element restricts 13. Recycle the used oil according to local codes. the air flow through the element and may reach the paper filter and clog it.

  • Page 29: Servicing The Wheels

    Maintenance Servicing the Wheels wheel halves and tighten. Remove the two long screws or bolts and replace them with two cap Service Interval: Every 100 hours screws and two locknuts. Removing the Wheels 7. Install the wheel to the pivot arm with the cap 1.

  • Page 30: Lubricate The Gear Case(Self-Propelled Units Only)

    Maintenance Check Spark Plugs 1. Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake. Service Interval: Every 100 hours 2. Lubricate fittings with one to two pumps of 1. Stop the engine and wait for all moving parts to NGLI grade #2 multi-purpose gun grease.

  • Page 31: Adjustments

    Maintenance Adjustments • For Blade Brake Clutch Units: 1. Loosen the cable clamp screw until the cable Note: Wait for all moving parts to stop and remove conduit slides (see Figure 31). spark plug wire before servicing, cleaning, or making any adjustments to the unit.

  • Page 32: Cleaning

    Maintenance Cleaning 6. Turn off the water. 7. Start the lawn mower, engage the blade, and let the lawn mower run for a few minutes to dry out Clean Grass Build-Up Under its components. Deck Scraping Method Service Interval: Before each use or daily If washing does not remove all debris from under the 1.

  • Page 33: Cleaning Under The Belt Cover(Self-Propelled Models Only)

    Maintenance 5. Install the belt cover. WARNING 6. Connect the wire to the spark plug. Grass clippings and other objects can be thrown from an open discharge tunnel. Cleaning the Blade Brake Thrown objects can cause serious injury or kill the operator or bystanders. Clutch Shield Never start or operate the lawn mower unless Service Interval: Every 50 hours...

  • Page 34: Emptying The Fuel Tank And Cleaning The Fuel Filter (Kawasaki Units Only)

    Maintenance 7. Remove the BBC shield and brush or blow all the debris from under the shield and around the BBC system. 8. Install the BBC shield. Rotate the tabs 180° back into position. Tighten the nuts to the bolts on tabs to secure the BBC shield to the deck.

  • Page 35: Storage

    Storage Storage General Storage Information 1. Clean the lawn mower housing. Refer to Preparing the Fuel System Cleaning the Underside of the Lawn Mower Housing section in Cleaning. To prepare the lawn mower for off season storage, 2. Clean any dirt and chaff from the cylinder, perform the recommended maintenance procedures.

  • Page 36: Troubleshooting

    Troubleshooting Troubleshooting Important: It is essential that all operator safety mechanisms be connected and in proper operating condition prior to mower use. When a problem occurs, Do Not overlook the simple causes. For example: starting problems could be caused by an empty fuel tank. The following table lists some of the common causes of trouble.
  • Page 37 Troubleshooting Problem Possible Cause Corrective Action Lawn mower does not self-propel 1. The self-propel drive cable is out of 1. Adjust the self-propel drive cable. Replace (Self-Propelled Models Only) adjustment or is damaged. the cable if necessary. 2. There is debris under the belt cover. 2.
  • Page 38 No Claim of breach of warranty shall be cause for cancellation All warranty work must be performed by an authorized or rescission of the contract of sale of any Exmark mower. Exmark Service Dealer using Exmark approved replacement All implied warranties of merchantability (that the parts.

  • Page 39: Service Record

    Service Record Date: Description of Work Done: Service Done By:...
  • Page 40 SEE EXMARK’S COMPLETE LINE OF ACCESSORIES AND OPTIONS MID-MOUNT RIDING ACCESSORIES AND OPTIONS CUSTOM RIDE SEAT SUSPENSION SYSTEM OPERATOR CONTROLLED DISCHARGE FULL SUSPENSION SEAT ROLL OVER PROTECTION SYSTEM (ROPS) DECK LIFT ASSIST KIT SUN SHADE HITCH KIT TRASH CONTAINER LIGHT KIT...

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