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Maintenance
Remove the electric-start button and battery pack from the machine before maintaining or cleaning the machine.
Use only the manufacturer's recommended replacement parts and accessories.
Inspect and maintain the machine regularly. Have the machine repaired only by an Authorized Service Dealer.
Recommended Maintenance Schedule(s)
Maintenance Service
Interval
After each use
Yearly
Lubricating the Machine
You do not need to lubricate the machine; all the
bearings have been lubricated at the factory for the
life of the machine.
Replacing the Blade
Models 21620 and 21621
Service Interval: Yearly
Important:
You will need a torque wrench to
install the blade properly. If you do not have a
torque wrench or are uncomfortable performing
this procedure, contact an Authorized Service
Dealer.
If the blade is damaged or cracked, replace it
immediately. If the blade edge is dull or nicked, have
it sharpened and balanced, or replace it.
WARNING
When servicing the blade, the blade can still
move even though the power source is off.
The blade is sharp; contacting the blade can
result in serious personal injury.
• Keep your hands and feet away from a
moving blade.
• Wear gloves when servicing the blade.
1.
Remove the battery pack from the machine.
2.
Use a block of wood to hold the blade steady
(Figure
20).
3.
Remove the blade bolt and blade; save the
blade bolt
(Figure
Maintenance Procedure
• Clean grass clippings and dirt from under the machine.
• Clean grass clippings and dirt from under the machine.
• Replace the blade or have it sharpened (more frequently if the edge dulls quickly).
• Replace the blades or have them sharpened (more frequently if the edge dulls
quickly).
20).
4.
Install the new blade and the blade bolt
21).
Important:
Ensure that the blade is installed
between the tabs on the underside of the fan,
with the curved ends facing down toward
the ground.
23
Figure 20
g423077
(Figure
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