Exmark COMMERCIAL 21 Clean Grass Build-Up Under Deck, Cleaning the Discharge Tunnel and Plug

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Maintenance

Cleaning

Clean Grass Build-Up Under Deck

Service Interval: Before each use or daily

1.Stop engine, wait for all moving parts to stop, and remove spark plug wire.

2.To ensure the best performance, keep the underside of the lawn mower housing clean.

CAUTION

The mower may dislodge material from under the mower housing.

•Wear eye protection.

•Stay in the operating position (behind the handle).

•Do Not allow bystanders in the area.

Washing Method

1.Position the lawn mower on a flat concrete or asphalt surface near a garden hose.

2.Start the engine.

3.Hold the running garden hose at handle level and direct the water to flow on the ground just in front of the right rear tire (Figure 33).

Figure 33

4.Engage the blade.

Note: The blade will draw in water and wash out clippings. Let the water run until you no longer see clippings being washed out from under the housing.

5.Disengage the blade, stop the engine and wait for all moving parts to stop.

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 its components.

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.

Cleaning the Discharge Tunnel and Plug

Service Interval: Before each use or daily

Always be sure that the discharge tunnel door closes securely when you release the handle. If the debris prevents the discharge door from closing securely, clean the inside of the discharge tunnel and the door thoroughly.

WARNING

Grass clippings and other objects can be thrown from an open discharge tunnel. Thrown objects can cause serious injury or kill the operator or bystanders.

Never start or operate the lawn mower unless one of the following is true:

•The discharge tunnel plug is locked securely in the discharge tunnel.

•The grass bag is locked in place.

•The optional rear discharge chute is locked in place.

•The discharge tunnel door is closed.

Cleaning Under the Belt

Cover (Self-Propelled Units

Only)

Service Interval: Every 50 hours

1.Stop the engine and wait for all moving parts to stop.

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Contents Commercial California Introduction Contents Safe Operating Practices SafetySafety Alert Symbol TrainingSafety Operation Maintenance and Storage Slope OperationSafety and Instructional Decals 109-9317 116-1922 117-2718 116-2737 Model Numbers SpecificationsDimensions SystemsProduct Overview Overall Length and Height at 2 inch Cutting HeightOperation ControlsPre-Start Fuel Shut-Off ValveOpen the Fuel Shut-Off Valve Handle AdjustmentOperating Instructions Starting the EngineStopping the Engine Operating the Self-Propel Drive Self-Propelled Units OnlyUsing the Mulch Plug Test Using the Grass Bag Adjusting the Cutting HeightUsing the Grass Bag Operating Tips Maintenance Recommended Maintenance SchedulesCheck 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 Kawasaki Units Service Air Filter ECXHNBBC21 and ECXHN21 UnitsChange Engine Oil Change Oil Filter ECXKA21 and ECXKABBC21 Check Condition Of Belt Self-Propelled Units OnlyCheck Spark Plugs Emptying the Fuel Tank and Cleaning the Fuel Filter Adjusting the Self-Propel Drive Self-Propelled Units OnlyAdjustment 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 Waste Disposal Motor Oil DisposalPreparing the Engine StoragePreparing the Fuel System General Storage InformationTroubleshooting Problem Possible Cause Corrective ActionTroubleshooting 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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