Model-aware fault finding.
The Kärcher HDS 745 is a 230/240V single phase machine. Correct diagnosis starts with the exact model, serial number and symptoms because components and control arrangements can differ between production versions.
Typical Kärcher HDS 745 repair enquiries.
- Worn pump seals, pistons or valves
- Fuel nozzle, electrode and ignition faults
- White or black smoke from the burner
- Internal leaks and pressure-control problems
What we test.
We explain the likely repair value before unnecessary parts are fitted. Older machines can still be economical when the pump, motor, boiler and chassis provide a sound base.
Work on this model.
HDS 745 pump rebuild and burner service →
A 2003 HDS 745 prepared with new pump seals and pistons, a diesel-burner service and new working accessories.
Book with the right details.
Send a clear data-plate photo, the supply voltage, smoke colour if relevant, and what the machine does with the trigger open and closed. Stop using it if diesel is collecting, smoke continues after shutdown or an electrical fault repeatedly trips the supply.