Exmark COMMERCIAL 21 manual Recommended Maintenance Schedules

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Maintenance

Maintenance

Note: Determine the left and right sides of the machine from the normal operating position.

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.

Disconnect the wire from the spark plug before you do any maintenance. Set the wire aside so that it does not accidentally contact the spark plug.

WARNING

Tipping the lawn mower may cause the fuel to leak from the carburetor or the fuel tank. Gasoline is extremely flammable, highly explosive, and under certain conditions, can cause personal injury or property damage.

Avoid fuel spills by running the engine dry or by removing the gasoline with a hand pump; never siphon.

WARNING

The engine can become very hot. Touching a hot engine can cause severe burns.

Allow the engine to cool completely before service or making repairs around the engine area.

Recommended Maintenance Schedule(s)

Maintenance Service

Maintenance Procedure

Interval

 

 

 

After the first 5 hours

• Change the engine oil.

 

 

 

• Check the engine oil level.

 

• Check the stopping time of the blade brake. The blade must stop within 3 seconds of

 

releasing the bail; if it does not, contact an Authorized Service Dealer for repair.

Before each use or daily

• Check the mower blade and the engine mounting fasteners.

• Check for loose hardware.

 

 

• Check the Blade Brake Clutch Bail operation (Blade Brake Clutch Units Only)

 

• Clean the grass build-up from under the deck.

 

• Clean the discharge tunnel and plug.

 

 

Every 25 hours

• Clean the foam pre-cleaner (Kawasaki Units).

• Clean the cover, base, foam and paper elements (ECXHNBBC21 and ECXHN21 Units).

 

 

 

Every 40 hours

• Check the condition of the belt(s).

 

 

 

• Change the engine oil. (May need more often under severe conditions.)

 

• Check for leaks in the fuel systems and /or deteriorating fuel hose.

Every 50 hours

• Clean under the belt cover (self-propelled units only).

 

• Clean the blade brake clutch shield.

 

• Clean under the cover plate (Non-BBC Units).

 

 

 

• Change the oil filter (ECXKA21 and ECXKABBC21 Units).

Every 100 hours

• Check the spark plugs.

 

• Clean the fuel filter element.

 

 

Every 250 hours

• Replace the air filter elements (ECXHNBBC21 and ECXHN21 Units). (May need more

often if they are damaged or excessively dirty.)

 

 

 

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Contents Commercial California Introduction Contents Safety Alert Symbol SafetySafe Operating Practices TrainingSafety Operation Slope Operation Maintenance and StorageSafety and Instructional Decals 109-9317 116-1922 117-2718 116-2737 Dimensions SpecificationsModel Numbers SystemsOverall Length and Height at 2 inch Cutting Height Product OverviewControls OperationFuel Shut-Off Valve Pre-StartOperating Instructions Handle AdjustmentOpen the Fuel Shut-Off Valve Starting the EngineOperating the Self-Propel Drive Self-Propelled Units Only Stopping the EngineUsing the Mulch Plug Adjusting the Cutting Height Test Using the Grass BagUsing the Grass Bag Operating Tips Recommended Maintenance Schedules MaintenanceCheck Engine Oil Level Checking the Blade Brake Clutch Blade Brake Clutch OnlyCheck the Mower Blade Emptying the Fuel Tank and Cleaning the Fuel Filter section Check for Loose Hardware Service Air Filter ECXHNBBC21 and ECXHN21 Units Service Air Filter Kawasaki UnitsChange Engine Oil Change Oil Filter ECXKA21 and ECXKABBC21 Check Condition Of Belt Self-Propelled Units OnlyCheck Spark Plugs Adjusting the Self-Propel Drive Self-Propelled Units Only Emptying the Fuel Tank and Cleaning the Fuel FilterAdjustment of drive cable nuts Clean Grass Build-Up Under Deck Cleaning the Discharge Tunnel and PlugCleaning Under the Belt Cover Self-Propelled Units Only Screws BBC Shield Motor Oil Disposal Waste DisposalPreparing the Fuel System StoragePreparing the Engine General Storage InformationProblem Possible Cause Corrective Action TroubleshootingTroubleshooting Exmark Commercial Equipment Page Service Record Page See EXMARK’S Complete Line of Accessories and Options

COMMERCIAL 21 specifications

The Exmark COMMERCIAL 21 is a top-tier commercial lawn mower designed to meet the rigorous demands of professional landscapers and lawn care providers. This robust machine combines innovative technology with ergonomic features to deliver exceptional performance, reliability, and ease of use.

One of the standout features of the COMMERCIAL 21 is its powerful engine. It is equipped with a reliable, high-performance engine that provides plenty of torque and power for tackling tough mowing conditions. This not only ensures efficiency but also enhances productivity, allowing operators to cover large areas in a shorter amount of time.

A significant advantage of the COMMERCIAL 21 is its patented MicroCut™ dual-blade system. This innovative cutting technology enhances the mowing quality by producing finer clippings. This results in an even cut and a higher-quality finish, leaving lawn surfaces looking meticulously manicured. The MicroCut blades are designed to prevent clogging, even in wet conditions, making the mower versatile for various grass types and environments.

Furthermore, the Exmark COMMERCIAL 21 features a durable and robust construction. Its heavy-duty steel deck can withstand the wear and tear of daily use while providing superior performance over time. The 21-inch cutting deck strikes a balance between maneuverability and cutting efficiency, making it ideal for residential areas, tight spots, and larger lawns alike.

When it comes to comfort, the COMMERCIAL 21 has ergonomically designed controls that make operation intuitive and user-friendly. The adjustable handle and padded grips help reduce operator fatigue during long mowing sessions, enabling professionals to work efficiently without discomfort.

For enhanced usability, this mower also has a quick-folding feature, allowing for easy transportation and storage. This attribute saves valuable time on the job site and ensures that the mower is ready to go when needed.

In addition to its robust features, the Exmark COMMERCIAL 21 incorporates user-friendly maintenance protocols. The easy-access engine and blade chambers facilitate routine checks, and the overall design promotes a longer lifespan with minimal maintenance requirements.

Overall, the Exmark COMMERCIAL 21 stands out in the market for its combination of power, performance, and user-centric design, making it an exceptional choice for professionals looking for a reliable and efficient lawn care solution. With its advanced features and technologies, it consistently delivers a superior mowing experience.
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