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EARTHBOUND RECREATIONAL VEHICLE TRAILER OWNER'S MANUAL
BLACK TANK FLUSH
The trailer has a water hose connector marked "black tank flush". To use, hook up a hose and turn on full
force. Within the tank a spray head with a multiple holed head will spray the interior surface of the tank.
The gate valve should be closed for the first couple of minutes, and then opened to let the water out in a
rush. Repeat as needed.
When Parked and Connected to Sewer Outlet
When you are in a park and connected to a sewer outlet keep the black holding tank dump valve closed and empty the
tank every few days or whenever it becomes almost full.
ONLY BY SENDING A LARGE VOLUME OF LIQUID THROUGH THE BLACK HOLDING TANK AT A TIME WILL TOILET
PAPER AND OTHER SOLIDS COMPLETELY WASH AWAY.
This practice will avoid the accumulation of solids in the main holding tank, which could lead to an
unpleasant cleaning job. Should solids accumulate, close the dump valve; fill the tank about half full with
water, then tow the trailer for a few miles. The turbulence and surging of the water will usually dissolve the
solids into suspension so the tank can be drained. Keep the grey tank valve open when connected to a sewer outlet.
Draining the tanks as described will protect them from freezing during storage. When traveling in subfreezing
temperatures use a winterizing solution designed for RV use and follow the directions on the container.
Drain Systems Cleaning
The only cleaning agents that can be used without causing harm to the system are household ammonia and
tri-‐sodium phosphate in small quantities. Do not use any product that contains any portion of petroleum
distillates. This attacks the rubber seals of your toilet and dump valve. Also, do not use any dish detergent
or abrasive cleaners. All products should be marked approved for ABS drainage systems.
Use only RV type antifreeze, approved for plumbing systems, when winterizing drains. These are sold
through your dealer.
TOILET
The Thetford RV toilet in your Earthbound RV is a design that has been used for many years. The foot pedal opens and
closes the slide mechanism and a water valve. Please refer to the owner's information provided by Thetford for more
information regarding use and care of the toilet.
CAUTION
:
When you dump the bowl of the toilet make sure all paper and solids have cleared the slide
mechanism before you allow it to close. Failure to do so can cause the groove for the slide to become
jammed and the slide will no longer close completely.
If the problem should occur a small nail or bent clothes hanger can be used to "pick" the material out of the
groove.
