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3. After performing the maintenance procedure(s),
connect the spark plug wire to the spark plug.
Important: Before tipping the mower to change
the oil or replace the blade, allow the fuel tank
to run dry through normal usage. If you must
tip the mower prior to running out of fuel, use a
hand fuel pump to remove the fuel. Always tip
the mower onto its side with the air filter up.
WARNING
Tipping the mower may cause the fuel to leak.
Gasoline is flammable, explosive and can cause
personal injury.
Run the engine dry or remove the gasoline with
a hand pump; never siphon.
Replacing the Air Filter
Service Interval: Yearly
1. Perform the pre-maintenance procedures; refer to
Preparing for Maintenance.
2. Open the air filter cover and remove the old air filter
(Figure 23).
3. Install a new air filter and the air filter cover.
Figure 22
Figure 23
Changing the Engine Oil
Service Interval: After the first 5 hours
Every 50 hours
Run the engine a few minutes before changing the oil
to warm it. Warm oil flows better and carries more
contaminants.
1. Perform the pre-maintenance procedures; refer to
Preparing for Maintenance.
2. Remove the dipstick (Figure 8).
3. Tip the mower onto its side, with the air filter up,
to drain the used oil out through the oil fill tube
(Figure 24).
4. After draining the oil, return the mower to its
operating position.
5. Slowly pour oil into the oil fill tube until the oil level
reaches the Full mark on the dipstick (Figure 8).
Do not overfill. (Max. fill: 0.59 l, type: SAE 30
detergent oil with an API service classification of SF,
SG, SH, SJ, SL, or higher.)
6. Install the dipstick securely.
7. Dispose of the used oil properly at a local recycling
center.
Charging the Battery
Service Interval: Every 25 hours
Model 21027 only
Always use the charger in a sheltered area and charge
the battery for 24 hours at room temperature (22° C)
whenever possible.
1. Open the cover to the battery compartment
(Figure 25).
14
Figure 24
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