The 318 replacement pump is available, and should be used for rinsing operations only, not to power washing operations.
We recommend that the user upgrade to the 338 pump for washing operations.
To upgrade to the 338 pump, purchase the #12164 – O500 Pump Conversion Kit. More information about the kit can be found in section 4 above.
Contact Herkules at 1-800-444-4351 for more information.