Operation and Maintenance Guide
1380 Beverage Drive, Suite W
Stone Mountain, GA 30083
1-800-426-6256 | 678-892-2323
Better – Faster – Every time
Updated 04 2012
© 2012 TapeTech Tool Co. All Rights Reserved
www.tapetech.com
The MudRunner® is essentially a power-assisted corner applicator and is intended
to work with corner finishers and mud heads.
Operation
In general, you will want to use joint compound thicker than you would normally use for
finishing corners. To start, it is recommended to thin the compound to about midway between
the consistency you normally use for corner finishers and finishing boxes. This varies based on
personal preference and the brand of joint compound you typically use.
To fill the MudRunner® with compound, insert the filler valve fully into the discharge tube of the
Loading Pump. You will need to maintain pressure against the Loading Pump as the MudRunner® is
filled or the pumping pressure will force the MudRunner® off of the filler valve.
Whenever there is any compound in the tool, it is under constant pressure from the internal gas
spring. Pump until the MudRunner® piston is forced all the way back to its stop. Once full, do not
continue pumping. Attach the finishing tool to the ball outlet of the MudRunner®. Compound flow is
controlled by twisting the control tube. The more you twist, the faster compound flows.
Place the tool at one end of the joint to be finished with the filler valve pointing away from the corner.
Twist the control tube. If you are using the corner finisher or mud head for the first time or after it has
been cleaned, you may want to wait an instant until you see compound filling it. Move the tool toward
the other end of the joint, relaxing your grip on the control tube when you wish compound flow to
stop. The outlet valve will automatically close off compound flow as you relax your grip. Place the tool
at the other end of the joint and repeat, relaxing your grip on the control tube when you have
overlapped the point where the previous pass ended.
Maintenance
It is good practice to empty the tool if it is not going to be used for a time. The outlet end of the tool
can be placed in a bucket of water. However, DON’T SUBMERGE THE HANDLE END OF THE TOOL! The
handle end can be sprayed with water, but should not be submerged. Do not directly spray the white
cover at the top end of the control tube. Should water find its way into the handle, stand the handle
up vertically to allow it to drain.
Clean the tool by removing the main tube cap. Clean all compound from the inside of the cap, the filler
valve and around the piston. If compound has gotten on the backside of the piston, remove the main
tube and clean as needed. Lubricate the rubber piston seal with Ames® Bazooka® oil or any light
machine oil.
Keep the area around the white cover clean. Avoid flushing joint compound or debris under the white
cover as it may make operation of the control tube more difficult. Lubricate the control mechanism as
shown after every cleaning and as needed to maintain proper operation of the tool. Replace the main
tube and the main tube cap as soon as the tool is clean to reduce the chances of damaging the tool.
MudRunner®
Models: 14TT
