Exmark Commercial 21 4500-686 Rev. B - Manual (Page 32)

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 35).
Figure 35
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.
32