The 1/2 HP motor mounts on four cap screws that extend through the face of the housing, below the front chuck. The motor features a reversible, variable speed, universal motor that operates on 115 volts, 25-to-60 cycle single-phase alternating current.The rear chuck assembly is removed first to remove the motor, then the spindle and front chuck slide forward to expose two front cap screws.
A critical part of any pipe cutting or threading machine is the die head and dies. Oster 310 machines feature either a "Universal" die head or a "Quadversal" die head. The general
procedures of removal and insertion of dies and the adjustment of the head to proper thread size are the same for both types.
A critical part of an Oster pipe cutting or threading machine are the dies. The Oster 310 pipe machines holds four dies simultaneously. Each die is inserted in a slot that corresponds to the number stamped on each die (1, 2, 3 or 4). For threading bolts or solid stock, set the cam to the line marked "Bolt."
The Oster 310 features an oil-cooled system to maintain engine temperature and catch metal filings. Oil level in the sump should be kept at least 1 inch above intake screen. The sump is drained by periodically removing the pipe plug from hole and draining the cutting oil from the sump.