Honda HRX217HMA Owner's Manual page 30

OPERATION
Obstacles
Use the side of the mower to cut close to large obstacles, such as
fences or walls.
Release the drive clutch lever to disengage the drive when mowing
around trees and other obstacles. Push the mower around obstacles
for better directional control. Be careful when mowing over obstacles
embedded in the lawn, such as sprinkler heads, paving, edging, raised
tree roots, etc. Avoid anything that sticks up above the surface of the
lawn.
If the blade hits something, or if the mower starts to vibrate, stop the
engine immediately, disconnect the spark plug cap, and check for
damage (page 35). Striking objects may damage the blades, bend the
crankshaft, and/or break the mower deck or other components.
Vibration usually indicates serious trouble.
The Distributor's Limited Warranty (page 75) does not cover parts
damaged by accident or collision.
Gravel and Loose Objects
Gravel, loose stones, and landscaping material can be picked up by
the mower and thrown many feet with enough force to cause serious
personal injury and/or property damage. The best way to prevent
potential injury from thrown objects is to release the blade control lever
to stop the blades before reaching areas with gravel, loose stones, or
landscaping material.
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