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I think I pumped air into my MudRunner® while I was filling it. Will this damage the tool?

Pumping air into the TapeTech MudRunner®, or any other automatic taping and finishing tool, usually results from either not properly priming the pump or from pumping joint compound from a bucket that is almost empty. If you happen to pump air into the MudRunner®, it will not damage the tool in any way. When you operate the tool, however, there will be a section of the internal or external corner that has less joint compound applied as the air is forced out of the tool. To prevent this, always prime the pump to release any air pockets and maintain a minimum level of joint compound in the bucket; about 3”- 4” is generally sufficient.