Using the Mulch Plug

Operation

Occasionally you may wish to use the mulch plug to mulch the grass and leaf clippings back into the lawn.

•Installing the Mulch Plug:

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

2.Remove the grass bag if it is on the mower.

3.Raise the discharge door and insert the mulch plug into the discharge opening. The lip on the plug will snap into the mower housing.

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

2.Move the lawn mower onto a paved surface in a non-windy area.

3.Set all four wheels to the 2 1/2 inches (6.4 cm) cutting height (see Figure 15 and Figure 16)

4.Take a half sheet of newspaper and crumple it into ball small enough to go under the deck (about 3 inches or 7.6 cm in diameter) as shown in Figure 14.

Figure 13

1.	Mulch plug	3.	Lip
2.	Discharge door	4.	Mower housing

4.Lower the discharge door.

•Removing the Mulch Plug:

Note: When grass is thick and lush, clippings may collect on and around the discharge tunnel plug. This may make it difficult to remove the plug. Clean the plug thoroughly after each use.

1.To remove the mulch plug, raise the discharge door and pull the mulch plug out of the discharge tunnel.

2.Lower the discharge door.

Checking the Blade Brake Clutch (Blade Brake Clutch Units Only)

Check the Blade Brake Clutch (BBC) system before each use to ensure that it is operating properly.

Normal Test:

Figure 14

1. Crumpled newspaper

2. 5 inches (12.7 cm)

5.Place the ball of newspaper 5 inches (12.7 cm) in front of the lawn mower.

6.Start the engine.

7.Push the blade control lock lever forward to release the blade control bail (Figure 4).

8.Squeeze the blade control bail against the handle. blade should engage.

9.Release the blade control bail. You should hear a “bang.” The blade should stop in three seconds. The blade control lock lever should reset to lock the blade control bail.

10.Immediately push the lawn mower over the newspaper ball.

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

12.Walk around the lawn mower to check for the newspaper ball. If the ball did not go under the deck, repeat steps 6 through 11.

13.Pull the lawn mower away from the newspaper. If the newspaper ball unravels or is shredded,

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.