MAINTENANCE
CHECKING PUMP OIL AND PUMP OIL CHANGING
Checking oil level: Most pumps have either a sight glass or a dipstick (or both) to check the pump oil level. The correct oil level is at the center of the sight glass (center of red dot). The sight glass is usually located on the back side of the pump [See Figure 19 (B)].
(A) 
(B)
(C)
Figure 19 - Pump Oil Filler Vent Cap (A), Sight Glass (B), and Drain Plug (C) Locations
For model 5525PW: Pump is factory sealed. Changing or refilling the oil in the pump requires removal of the pump from the engine and should not be required unless oil has leaked out due to worn or damaged oil seals in the pump. If oil has leaked out of the pump, bring the pressure washer to a certified service center for repair.
For models 6026PW, 9030PW, and 1335PW: These units all have a sight glass to check the oil level and have a drain plug to remove the old oil when changing. To add oil remove vent cap from top of pump [See Figure 19 (A)].
Changing oil: Remove the oil drain plug located at the backside of the pump [See Figure 19 (C)]. Drain old oil. Replace drain plug. Refill pump with the correct type and amount of oil (see below for oil types and amounts). Check oil level. Upon starting the pressure washer check for any pump oil leaks.
Pump Oil Type
5525PW - AR Pump - Special. See pump parts list.
6030PW, 9030PW, 1335PW - CAT Pumps - Special CAT pump oil. Use 531 30 74-83.
DO NOT use any oil in pumps other than the manufacturer's oil.
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