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Examine tires at least once a week for surface wear and cracks and
replace them as needed. Replace tires when they become loose on the
rims or cracks appear.
Check handrims at least once a week. Inspect each handrim for rough or
sharp edges and, if any are found, replace handrims immediately. Ensure
that all hardware is properly aligned and secure.
Check wheel lock engagement at least once a week. See Adjust wheel
locks in Section 6 to adjust wheel lock engagement. If a wheel lock
is worn or damaged, replace it immediately. Inspect the hardware for
looseness or signs of wear.
Ensure that the locking mechanism operates smoothly. The locking
assembly should be tight enough so that the wheel can not rotate or the
lock slip. Check that the locking shoe does not press against the tire
when in the unlocked position. Excessive force should not be required to
either engage or release wheel locks. Oil the wheel lock pivot points with
one or two drops of 30 weight oil. Remove excess oil and dirt.
Check the anti-tippers at least once a week. Ensure that the anti-tippers
are securely fastened and properly positioned.
WARNING: When in use, anti-tippers must be installed in the
downward position.
Check upholstery at least once a month. Inspect for rips, tears and
worn spots. Ensure that all upholstery-attaching screws are present,
properly aligned, and well-secured. Use a Phillips screwdriver to tighten
upholstery mounting screws. Check attaching screws for sharp edges or
stripped screws, and replace if found.
WARNING: Worn or torn upholstery, or upholstery with loose
hardware, must be replaced immediately. It may not support
body weight.