COMMERCIAL 21 For Serial Nos. 312,000,000 & Higher Part No. 4500-927 Rev.
WARNING CALIFORNIA Proposition 65 Warning The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Important: The engine in this product is not equipped with a spark arrester muffler. It is a violation of California Public Resource Code (CPRC) Section 4442 to use or operate this engine on any forest-covered, brush-covered, or grass-covered land as defined in CPRC 4126.
Introduction CONGRATULATIONS on the purchase of your Exmark Mower. This product has been carefully designed and manufactured to give you a maximum amount of dependability and years of trouble-free operation. This manual contains operating, maintenance, adjustment, and safety instructions for your Exmark mower. BEFORE OPERATING YOUR MOWER, CAREFULLY READ THIS MANUAL IN ITS ENTIRETY. Figure 1 1.
Contents Cleaning Under the Cover Plate (Non-Blade Brake Clutch Units Only)............................31 Waste Disposal ...............................................32 Storage ..................................................................33 Preparing the Fuel System...............................33 Preparing the Engine ......................................33 General Storage Information ..........................33 Removing the Lawn Mower from Storage.................................................
Safety Safety Safe Operating Practices Safety Alert Symbol Training • Read the Operator’s Manual and other training material. If the operator(s) or mechanic(s) can not read English it is the owner’s responsibility to explain this material to them. • Become familiar with the safe operation of the equipment, operator controls, and safety signs. • All operators and mechanics should be trained. The owner is responsible for training the users.
Safety • Inspect the area where the equipment is to be used and remove all rocks, toys, sticks, wires, bones, and other foreign objects which can be thrown by the machine and may cause personal injury to the operator or bystanders. DANGER In certain conditions during fueling, static electricity can be released causing a spark which can ignite gasoline vapors. A fire or explosion from gasoline can burn you and others and cause property damage.
Safety Operation • Park the machine on level ground. Stop engine, wait for all moving parts to stop, and remove the spark plug wire(s). WARNING Operating engine parts, especially the muffler, become extremely hot. Severe burns can occur on contact and debris, such as leaves, grass, brush, etc. can catch fire. • Allow engine parts, especially the muffler, to cool before touching. • Remove accumulated debris from muffler and engine area.
Safety • Keep engine and engine area free from accumulation of grass, leaves, excessive grease or oil, and other debris which can accumulate in these areas. These materials can become combustible and may result in a fire. • Use extreme care when loading or unloading the machine into a trailer or truck. • Use care when approaching blind corners, shrubs, trees, or other objects that may obscure vision.
Safety Safety and Instructional Decals • New safety signs may be obtained from your authorized Exmark equipment dealer or distributor or from Exmark Mfg. Co. Inc. • Keep all safety signs legible. Remove all grease, dirt and debris from safety signs and instructional labels. • Replace all worn, damaged, or missing safety signs. • When replacement components are installed, be sure that current safety signs are affixed to the replaced components.
Safety 109-9317 116-1922 117–2718 116-2737 10
Specifications Specifications Model Numbers Serial Nos: 312,000,000 and Higher ECSKAP21; ECSKA21; ECXKA21; ECXHN21; ECXKABBC21; ECXHNBBC21 Systems Safety Interlock System • Engine Specifications: See your Engine Owner’s Manual For units without a Blade Brake Clutch: Operator must have the blade control bail depressed to start the engine. Releasing the blade control bail will cause the engine to stop.
Product Overview Overall Length and Height at 2 1/2 inch Cutting Height: Handle Setting Length Height High 61.00 inches (154.9 cm) 39.00 inches (99.1 cm) Medium 63.00 inches (160.0 cm) 37.50 inches (95.3 cm) Low 64.50 inches (163.8 cm) 35.00 inches (88.9 cm) Product Overview Figure 3 1. Grass bag 5. Discharge door 2. Handle 6. Rear wheel height adjustment 3. Drive Bail (Self-Propelled Units Only) 7. Front wheel height adjuster 4.
Operation Operation is depressed toward the handle. When this bail is released the unit will stop moving. Note: Determine the left and right sides of the machine from the normal operating position. Throttle-Choke Lever (ECXHN21) Located on the left side of the handle bar. Controls The lever is used to control engine speed. Moving the throttle to the full forward (Choke) position will place the lever in the choke position. The choke aids in starting a cold engine.
Operation Figure 7 1. Rotate clockwise to close 2. Rotate counterclockwise to open On ECXHN21 and ECXHNBBC21 units, the fuel shut off valve is located on the engine as shown in Figure 8. Rotate 1/4 turn clockwise to shut off fuel. Rotate the valve 1/4 turn counterclockwise to turn on fuel. Figure 5 Clear plastic cover removed for clarity 1. Engine stop switch 2. Press “STOP” to kill engine 3.
Operation Operating Instructions Handle Adjustment The height of the handle can be adjusted for comfortable operation. Stand behind the handle to determine the height. To adjust the handle height, position the hardware into one of the three holes in the handle bracket. Open the Fuel Shut-Off Valve Rotate the valve 1/4 turn counterclockwise to turn the fuel on (if equipped). Figure 10 Kawasaki units with large fuel tank shown Starting the Engine 1. Muffler 2. Oil fill/dipstick 1.
Operation 5. For units without a Blade Brake Clutch: Hold the blade control bail to the handle. 6. Pull the starter handle lightly until you feel resistance, then pull it sharply. Allow the rope to return slowly. 7. For ECXHNBBC21 Units: Gradually push in the choke control as the engine warms up. 8. For ECXHN21 Units: When the engine starts, move the choke/throttle control back to the fast position. self-propels at the maximum ground speed.
Operation Using the Mulch Plug 1. Stop the engine and wait for all moving parts to stop. Occasionally you may wish to use the mulch plug to mulch the grass and leaf clippings back into the lawn. 2. Move the lawn mower onto a paved surface in a non-windy area. • Installing the Mulch Plug: 3. Set all four wheels to the 2 1/2 inches (6.4 cm) cutting height (see Figure 15 and Figure 16) 1. Stop the engine and wait for all moving parts to stop. 4.
Operation the blade has not properly stopped, resulting in an unsafe operating condition. Contact an Authorized Service Dealer. WARNING Adjusting the cutting height levers could bring your hands into contact with a moving blade. A moving blade can cause serious injury. DANGER • Stop the engine and wait for all movement to stop before adjusting the cutting height. If the blade brake clutch system is inoperative, the blade will continue to rotate when you release the blade control bail.
Operation Figure 16 1. Front wheel shaft assembly 4. Front quadrant block cut heights 2. Pull up 5. Pull outward 3. Height adjuster 6. Shaft groove 2. Insert the front wheel shaft assembly into the desired cut height setting in the front quadrant block. Lower the height adjuster into the groove on the front wheel shaft. Pull and push the wheel shaft assembly to make sure it has locked into place. Figure 17 1. Bag 4. Handle bracket notch 2. Handle 3. Bag frame 5. Rear door 6. Lower 4.
Operation • Alternate the mowing direction. This helps disperse the clippings over the lawn for even fertilization. DANGER If the discharge door does not close completely, the lawn mower could throw objects. Thrown objects can result in serious personal injury or death to the operator or bystanders. • If the finished lawn appearance is unsatisfactory, try one or more of the following: – Sharpen the blade. • Never open the door to the discharge opening when the engine is running.
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, someone could accidentally start the engine. Accidental starting of the engine could seriously injure you or other bystanders. Tipping the lawn mower may cause the fuel to leak from the carburetor or the fuel tank.
Maintenance Maintenance Service Interval Every 300 hours Yearly or before storage Maintenance Procedure • Replace the paper air filter (Kawasaki Units). (May need more often in dusty conditions. See the Engine manual for additional information.) • Empty the fuel tank before repairs as directed or before storage. 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.
Maintenance Always mow with a sharp blade. A sharp blade cuts cleanly and without tearing or shredding the grass blade. DANGER 1. Stop the engine and wait for all moving parts to stop. A worn or damaged blade can break. A piece of the blade could be thrown into the operator’s or bystander’s area, resulting in serious personal injury or death. 2. Disconnect the wire from the spark plug (Figure 9 and Figure 10). • Inspect the blade periodically for wear or damage. 3.
Maintenance Figure 22 1. Inner cutting edge radius 2. Cutting angle C. Check the balance of the blade by placing the center hole of the blade over a nail or screwdriver shank clamped horizontally in a vise (Figure 23). If either end of the blade rotates downward, file that end (not the cutting edge). The blade is properly balanced when neither end drops. Figure 24 1. Blade Brake Clutch Units 2. Units without a Blade Brake Clutch 6. Return the lawn mower to its upright position. 7.
Maintenance Service Air Filter (Kawasaki Units) Service Interval: Every 25 hours—Clean the foam pre-cleaner (Kawasaki Units). Every 300 hours— Replace the paper air filter (Kawasaki Units). (May need more often in dusty conditions. See the Engine manual for additional information.) Note: Do Not operate the engine without the air filter assembly; extreme engine damage will occur. 1. Stop engine, wait for all moving parts to stop. 2. Disconnect the wire from the spark plug (Figure 10).
Maintenance (ECXHNBBC21 and ECXHN21 Units). (May need more often if they are damaged or excessively dirty.) psi (207 kPa) through the filter from the wire screen side to remove any excess dirt. If the paper element is excessively dirty, replace it. Note: Never try to brush dirt off the paper element; brushing forces the dirt into the fibers. Note: Do Not operate the engine without the air cleaner assembly; extreme engine damage will occur. 9.
Maintenance 5. Place a suitable drain pan under the dipstick/oil drain. 6. Clean around the dipstick. 7. Remove the dipstick by rotating the cap counterclockwise and pulling it out. 8. Raise the left side of the lawn mower to drain the oil from the dipstick fill tube into the drain pan. 9. After draining the oil, return the lawn mower to the operating position. Figure 28 10. Fill the crankcase with fresh oil to the upper limit mark on the dipstick.
Maintenance Adjustments Note: Replace a cracked, fouled, or dirty spark plug. Do Not clean the electrodes because grit entering the cylinder can damage the engine. 5. Set the gap on the plug to 0.030 inch (0.76 mm) (Figure 29). Note: Wait for all moving parts to stop and remove spark plug wire before servicing, cleaning, or making any adjustments to the unit.
Maintenance cover tabs (see Figure 30). Remove any debris under the cover. 3. If the lawn mower does not self propel with bail engaged, tighten the belt by turning the drive cable nuts clockwise. To maximize belt life, Do Not overtighten the belt. 4. Loosen the cable clamp screw until the cable conduit slides (see Figure 32). If the lawn mower creeps forward without the bail engaged, loosen the belt by turning the drive cable nuts counterclockwise. Figure 31 1.
Maintenance Cleaning Scraping Method If washing does not remove all debris from under the lawn mower, scrape it clean. 1. Disconnect the wire from the spark plug. 2. Drain the fuel from the fuel tank. Refer to Emptying the Fuel Tank and Cleaning the Fuel Filter section. 3. Tip the lawn mower onto its right side. 4. Remove the dirt and grass clippings with a hardwood scraper. Avoid burrs and sharp edges. 5. Turn the lawn mower upright. 6. Fill the fuel tank. 7. Connect the wire to the spark plug.
Maintenance 2. Disconnect the wire from the spark plug (see Figure 9 and Figure 10). 3. Pull upward on the back of the cover to unsnap the front and back cover tabs (see Figure 30). 4. Lift off the cover and brush out all the debris around the belt area. 5. Install the belt cover by pushing down on the rear first and then snapping the front onto the mower housing. 6. Connect the wire to the spark plug. 7.
Maintenance 8. Reinstall the cover plate and torque the screws to 35-45 ft-lb (47-61 N-m). 9. Install the blade, blade support, and the blade bolt. 10. Turn the lawn mower upright. 11. Connect the wire to the spark plug. Waste Disposal Motor Oil Disposal Engine oil and hydraulic oil are both pollutants to the environment. Dispose of used oil at a certified recycling center or according to your state and local regulations.
Storage Storage 2. Clean any dirt and chaff from the cylinder, cylinder head fins, and blower housing. Preparing the Fuel System 3. Remove grass clippings, dirt, and grime from the external parts of the engine, the shrouding, and the top of the lawn mower housing. To prepare the lawn mower for off season storage, perform the recommended maintenance procedures. 4. Clean the BBC shield. Refer to Cleaning the Blade Brake Clutch Shield section in Cleaning.
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. If a problem continues, contact an Authorized Service Dealer. Problem Engine will not start, starts hard, or fails to keep running. Engine loses power.
Troubleshooting Problem Lawn mower does not self-propel. (Self-Propel Units Only) Difficult to pull lawnmower rearward (Self-Propelled Units Only). Possible Cause Corrective Action 1. The self-propel drive cable is out of adjustment or is damaged. 1. Adjust the self-propel drive cable. Replace the cable if necessary. 2. There is debris under the belt cover. 2. Clean the debris from under the belt cover. 1. Transmission is locked. 1.
Exmark Commercial Equipment 1 Year Limited Warranty If for any reason you are dissatisfied with the Service Dealer’s analysis or with the assistance provided, contact us at: Exmark Customer Service Department The Exmark Warranty Company 2101 Ashland Avenue Beatrice, NE 68310 402-223-6375 or service@exmark.com Conditions and Products Covered Exmark Mfg. Co. Inc.
Notes: 37
Service Record Date: Description of Work Done: 38 Service Done By:
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 TURF STRIPER 12V POWER PORT ULTRA VAC COLLECTION SYSTEM MICRO-MULCH SYSTEM ULTRA VAC QUICK DISPOSAL SYSTEM OUT-FRONT RIDING ACCESSORIES AND OPTIONS CUSTOM RIDE SEAT SUSPENSION SYSTEM SNOW BLADE DUAL-TAIL WHEEL SN
