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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 5 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 handgrips at least once a week. Ensure that they are not ripped;
ensure that they are tight and securely fastened.