24
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
maintenance procedures will assist in preserving the performance of your equipment. Contact your dealer for
maintenance. 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 of your new Power Washer. Change pump oil after first 50 hours and every 3
months or 500 hours thereafter. Use SAE 10W-40 weight oil, non-detergent.
Maintenance Schedule
Engine Oil
Inspect
Daily
Change
Every 25 hours
Filter
Every 50 hours
Air Cleaner
Inspect
Every 50 hours or monthly
Clean
Every 3 months
Battery Level
Check monthly
Engine Fuel Filter
500 hours or 6 months
Spark Plug Maintenance
500 hours or 6 months
Clean Fuel Tank(s)
Annually
Replace Fuel Lines
Annually
Pump Oil (Non-
detergent SAE
10W-40)
Inspect
Oil level daily
Change
After first 50 hours, then every 500 hours or
annually
Clean Burner Filter
Monthly (More often if fuel quality is poor)
Remove Burner Soot
Annually
Burner Adjustment/Cleaning
Annually
Replace Burner Nozzle
Annually
Descale Coil
Annually (More often if required)
Replace High Pressure Nozzle
Every 6 months
Replace Quick Connects
Annually
Clean Water Screen/Filter
Weekly
Replace HP Hose
Annually or as needed
Diverter Valve Cable
Lube Cable Weekly
Rupture Disk
Replace every 2 years
Date Oil Changed
Month/Day/Year
No. of Operating Hours
Since Last Oil Change
Brand Name & Type of Oil (see above)
Karcher Trailer 3500E HDS 4.7/35 Operator’s Manual 9.808-363.0 - B
