: Often utilizes Parker or Cross Fluid Power valves. Service & Maintenance Schedule

: Uses a 6-pad, 11-inch ceramic clutch with a 10-spline, 1 3/8-inch shaft . Pressure Plate : Typically matches model PHT C7350 . Knives : Generally uses a set of 4 chipper knives (blades).

Woodchuck Hyroller 1200 is a legacy 12-inch disk-style brush chipper known for its heavy-duty construction and reliable hydraulic feed system. While the manufacturer, Wood Chuck Chipper Corp, was based in Shelby, NC, the machine's components—primarily Perkins diesel engines

Typically uses an 11-inch ceramic 6-pad clutch with a 10-spline, 1 3/8-inch shaft.

If you can read a hydraulic diagram and own a torque wrench, this manual will pay for itself the first time you avoid a misdiagnosed feed wheel issue. If you can’t, hire a mechanic—this manual won’t teach you basic repair skills.

The manual includes a full wiring diagram for the safety interlock system (feed wheel reverse bar, emergency stop, clutch engagement). It provides pin-out values for the control box and simple continuity checks—very useful for tracing rodent-chewed wires.