Product Manual

Page 9 of 13
After Each Use
After using your creeper for a couple hours (and every month thereafter), please check the tightness
of the center swivel nut. After the break-in period the swivel can become loose which will result in the
loss of ball bearings. This is not covered under warranty.
Maintenance
We are very proud of our American-made casters. We feel our design is improved by not using a
center rivet for the caster swivel assembly. Consequently we use a bolt and lock nut so the pre-load
can be set properly on the bearings. You may have to adjust the pre-load from time to time. You will
need a 1/2” socket or wrench to fit on the center nut. To do this, remove the wheel from the fork (using
a 7/16” wrench) and torque the nut until the swivel becomes tight (will not spin), then back off slowly
until the swivel spins smoothly without any “slop”. Tighten then loosen the same as you would a wheel
bearing to make sure the ball bearings are properly seated. There will be a bit of a “break-in” period
when your casters are new – if you find the swivel is a bit stiff it will loosen up with a bit of use.
The BONE-STER is a high quality, 100% American-made product. However, like all fine tools, it
requires a bit of care to ensure a lifetime of reliable use. Below you will find some tips to make sure
that this will be the last creeper you will ever buy!
 Keep it clean! Using a creeper on a dirty floor will cause dirt and grease to build up on the casters.
Over time this can cause the ball bearings to get jammed up with grit, as well as speed up
possible tire degradation from rolling in grease and oil that can soften up the material. Also, a dirty
creeper body will stain clean clothes! If you keep your creeper washed top and bottom with a light
degreaser like Simple Green, it will perform like new for years. Be sure to clean around the
swivels and axles of the casters.
 Do not drop your creeper! Set it down carefully on the ground. The BONE-STER creeper is made
to be tough, but repeated abuse can cause the plastic on the body and wheels to crack or break,
and such abuse is NOT covered by warranty! In addition, be aware that plastic becomes brittle in
cold temperatures, so be extra careful if you are using your creeper in a cold shop or outside in
the winter.
 Do not use your creeper as a ladder or stepping stool. If you stand on the top of the creeper with
the wheels on the floor, you run the risk of the creeper rolling out from under you, which could
result in serious injury!
We stand behind our products with a limited one year warranty on the creeper body and lifetime on
the wheels, but keep in mind that these only apply against manufacturer defects. Running over,
dropping, hitting, overloading, allowing the casters to get too dirty, or otherwise abusing your creeper
will void these warranties!