Below are answers to some of the questions most commonly asked by Yetter customers. If you have a question that is not addressed here, please submit it using our online contact form or call a Yetter customer service representative at 800-447-5777.
Tri-fold markers are equipped with restricted elbow fittings on the hydraulic cylinder to limit the marker from rapid operation/movement. If the marker operates slower than 8 seconds, drill out the restriction with a 1/16" bit. Adjust the hydraulic oil flow to operate the marker no faster than 8 seconds.