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7/120 (P425AWIR), 9/110 (XP375AWIR), 10/105 (HP375AWIR), 14/85 (VHP300AWIR),
7/170 (P600WIR), 10/125 (HP450WIR), 14/115 (VHP400WIR)
SPEED AND PRESSURE REGULATION ADJUSTMENT
Normally, regulation requires no adjusting, but if correct
adjustment is lost, proceed as follows:
Refer to the diagram above.
A: Adjusting screw
Start the machine (Refer to STARTING INSTRUCTIONS in
the OPERATING INSTRUCTIONS section of this manual).
Adjust the service valve on the outside of the machine to
maintain rated pressure at full speed. If full speed is not
maintained at rated pressure, then turn the adjusting screw
clockwise to increase the pressure. Optimum adjustment is
achieved when full speed is achieved at rated pressure.
Close the service valve. The engine will slow to idle speed.