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Nilfisk MH 7P-220/1120 PE repair times and service schedule

Name: Nilfisk MH 7P-220/1120 PE
Brand: Nilfisk

Nilfisk MH 7P-220/1120 PE: 220 bar · 18.7 l/min · hot water, petrol mobile / wheeled pressure washer. Below are the recommended service intervals and guide labour times. The annual service takes about 1 h 30 min.

Model name gives pump pressure (bar) and max flow (l/h). X/XT versions have a hose reel.

Specifications

TypeHot water, petrol

FormatMobile / wheeled

Pressure220 bar

Flow rate18.7 L/min (1120 L/h)

HeatingOil / diesel burner

StatusCurrent model

Model codeMH-7P-220-1120-PE

Service schedule and repair times

Every 6 months

Operation	Guide time	Hours
Air Filter Replacement	10 min	0.17 h
6-Month Intermediate Service	1 h	1 h
Burner Fuel Filter Replacement	10 min	0.17 h
Burner Fuel Nozzle Replacement	20 min	0.33 h
Heating Coil De-scale	1 h	1 h
6-Month Intermediate Service	1 h 30 min	1.5 h

Every 12 months

Operation	Guide time	Hours
Spark Plug Replacement	10 min	0.17 h
Pump Oil Change	15 min	0.25 h
Engine Oil Change	15 min	0.25 h
Fuel Filter Replacement	15 min	0.25 h
Annual Full Service	1 h 30 min	1.5 h
Anti-scale Dosing System Service	20 min	0.33 h
Burner Electrode Replacement (pair)	20 min	0.33 h
Combustion Analysis	30 min	0.5 h
Annual Full Service	2 h 30 min	2.5 h

Every 24 months

Operation	Guide time	Hours
Engine Valve Clearance Adjustment	40 min	0.67 h
Photocell / Flame Sensor Replacement	15 min	0.25 h
2-Year Major Overhaul	4 h	4 h

Repairs (as required)

Operation	Guide time	Hours
High-Pressure Hose Replacement	Members
Unloader Valve Replacement	Members
Recoil Starter Replacement	Members
Diagnostic — Fault Finding	Members
Check Valve Replacement (set)	Members
Carburettor Clean / Rebuild	Members
Pump Seal Kit Replacement	Members
Engine Replacement	Members
Pump Rebuild (full)	Members
High-Pressure Hose Replacement	Members
Pressure Switch Replacement	Members
Unloader Valve Replacement	Members
Thermostat Replacement	Members
Flow Switch Replacement	Members
Fuel Pump Replacement (burner)	Members
Ignition Transformer Replacement	Members
Check Valve Replacement (set)	Members
Pump Seal Kit Replacement	Members
Control Board / PCB Replacement	Members
Burner Motor Replacement	Members
Diagnostic — Fault Finding	Members
Pump Rebuild (full)	Members
Heating Coil Replacement	Members

Guide times are for a competent technician with the correct parts and tools, and exclude travel. Always follow the manufacturer's service documentation. Specifications: manufacturer data.

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