14
Maintenance
Preventative Maintenance
This pressure washer was produced with the best available materials and quality craftsmanship. However, you as
the owner, have certain responsibilities for the correct care of the equipment. Attention to regular preventative main-
tenance procedure will assist in preserving the performance of your equipment. Contact your dealer for mainte-
nance. Regular preventative maintenance will add many hours to the life of your pressure washer. Perform
maintenance more often under severe conditions.
Oil Change Record
Check pump oil level before first use. Change pump oil after first 50 hours and every month or 500 hours thereafter.
Use SAE 10W-40 non-foaming oil.
Maintenance Schedule
Pump Oil
SAE 10W-40 non-foaming oil
Inspect
25 Hours or Weekly
Change
Yearly
Check Valve Clearance
Yearly
Water Filter
Inspect
Every 6 Hours or Daily
Clean
Yearly
Date Oil Changed
Month/Day/Year
Estimated Operating
Hours Since Last Oil
Change
Date Oil Changed
Month/Day/Year
Estimated Operating
Hours Since Last Oil
Change
Karcher HD 300-310 Operator’s Manual 9.800-086.0 - P
