Exmark COMMERCIAL 21 manual Adjustment of drive cable nuts

Page 29

Maintenance

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.

If the lawn mower creeps forward without the bail engaged, loosen the belt by turning the drive cable nuts counterclockwise.

cover tabs (see Figure 30). Remove any debris under the cover.

4.Loosen the cable clamp screw until the cable conduit slides (see Figure 32).

Figure 31

1.Adjustment of drive cable nuts

4.Reinstall the belt cover by pushing down on the rear first and then snapping the front onto the mower housing.

5.Check the operation for desired drive control.

6.Repeat steps 2 through 5 as necessary for further adjustment.

Note: Adjustment to obtain desired ground speed at full bail travel may be made in order to accommodate slower speeds.

Adjusting the Blade

Brake Cable

(Blade Brake Clutch Units

Only)

Adjust whenever a new blade brake cable assembly is installed or if the blade control lock lever does not operate properly.

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

2.Disconnect the wire from the spark plug.

3.Remove the belt cover by pulling upward on the back of the cover to unsnap the front and back

Figure 32

1. Spring

3. Cable clamp screw

2.Cable conduit

5.Pull the cable until there is approximately 1/8 inch in slack. Do Not put tension on the spring.

6.Tighten the screw to lock the adjustment in place.

7.Reinstall the belt cover by pushing down on the rear first and then snapping the front onto the mower housing.

8.Connect the wire to the spark plug.

9.Check the operation of the blade control lock lever (see Figure 12). The lever must reset itself to lock out the blade control bail. If it does not, repeat steps 4 through 8.

10.Perform the “Checking the Blade Brake Clutch (Blade Brake Clutch Units Only)” procedure in Operation.

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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 the Mower Blade Check Engine Oil LevelChecking the Blade Brake Clutch Blade Brake Clutch Only 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 Check Spark Plugs Change Oil Filter ECXKA21 and ECXKABBC21Check Condition Of Belt Self-Propelled Units Only Adjusting the Self-Propel Drive Self-Propelled Units Only Emptying the Fuel Tank and Cleaning the Fuel FilterAdjustment of drive cable nuts Cleaning Under the Belt Cover Self-Propelled Units Only Clean Grass Build-Up Under DeckCleaning the Discharge Tunnel and Plug 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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