Page 6-1: High Pressure Pump
Boxxer 421
High Pressure Pump
-Maintenance
DAILY
Check the oil level and the condition of the oil. The oil level should be up to the center
of the sight glass on the back of the pump.
Use a 30 weight, non-detergent oil.
If the oil becomes discolored and contaminated, one of the oil seals may be
damaged. Refer to the Service Section.
Do not operate the pump if the crankcase has been contaminated with water.
Do not leave contaminated oil in the pump housing or leave the housing empty.
Remove contaminated oil as soon as it is discovered and replace it with clean
oil.
PERIODICALLY
Change the oil after the first 100 hours of operation, and every 400 operating hours
thereafter. When changing, remove the drain plug on the oil drain center located on
the frame so all oil and accumulated sediment will drain out.
Do not turn the drive shaft while the oil reservoir is empty.
Protect the pump from freezing.
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