New WC68's come with feed pressure set about half full pressure. It sounds like yours may have come with a bit too soft of pressure.
Your Owner's Manual describes how to adjust the feed pressure. Pressure can be adjusted with the large spring on the right side. After the
chipper break-in the pressure is a bit softer than brand new. On the plus side, the softer pressure makes starting large pieces easier to get pulled in. You can tight up the spring pressure but be aware, starting large pieces can sometimes be contrary. If you encounter that, the easy work-around is to shove in a smaller piece to raise the roller a little, then immediately follow it with your large piece.
Other 'fixes' are to make your larger tree cuts at an angle, giving the roller something to get a bite on. I usually forget to do that, so I just routinely use the smaller piece first system.
If adjusting the pressure spring doesn't solve your problem, there is of course, a hydraulic pressure control next to the spring pressure control. You may have to bump up the hydraulic pressure. The BX probably has to run a full PTO rpm to get the needed fluid pressure. haven't needed to do that though on my
L3400.
Hope the above solves your problem. If not, Woodland has an excellent Tech Service Department that will gladly walk you through whatever it takes to resolve the problem.
