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4

How To Use This Manual

This manual contains the following sections:

How to Use This Manual

Safety

Operations

Maintenance

Parts List

The HOW TO USE THIS MANUAL section will tell you 

how to find important information for ordering correct 

repair parts.
Parts may be ordered from authorized dealers. When 

placing an order for parts, the machine model and 

machine serial number are important. Refer to the 

MACHINE DATA box which is filled out during the 

installation of your machine. The MACHINE DATA box 

is located on the inside of the front cover of this manual. 

The model and serial number of your machine is 

located on a decal attached to the pressure washer.

The SAFETY section contains important information 

regarding hazardous or unsafe practices of the 

machine. Levels of hazards are identified that could 

result in product damage, personal injury, or severe 

injury resulting in death.
The OPERATIONS section is to familiarize the operator 

with the operation and function of the machine.
The MAINTENANCE section contains preventive main

-

tenance to keep the machine and its components in 

good working condition. They are listed in this general 

order: 

Storage

Engine Maintenance

Maintenance And Service

Unloader Valves 

Winterizing Procedure

High Limit Hot Water Thermostat

Pump

Cleaning of Coils

Rupture Disk

Fuel 

Burner Nozzle

Landa MHC Oil Burner

Landa MHC Burner Air Adjustment

Fuel Pressure Adjustment

Removal of Soot and Heating Coil

Coil Reinstallation

Troubleshooting

Preventative Maintenance

The PARTS LIST section contains assembled parts 

illustrations and corresponding parts list. The parts lists 

include a number of columns of information:

REF – 

column refers to the reference number 

on the parts illustration.

PART NO.

 – column lists the part number for 

the part.

QTY

 – column lists the quantity of the part used 

in that area of the machine.

DESCRIPTION 

– column is a brief description 

of the part.

NOTES 

– column for information not noted by 

the other columns.

NOTE: If a service or option kit is installed on your 

machine, be sure to keep the KIT INSTRUCTIONS 

which came with the kit. It contains replacement parts 

numbers needed for ordering future parts.
NOTE: The manual part number is located on the 

lower right corner of the front cover.

Model:

Date of Purchase:

Serial Number:

Dealer:

Address:

Phone Number:

Sales Representative:

Landa MHC  9.800-950.0 - BM

Summary of Contents for MHC3-24324

Page 1: ...HOU R 1 10 MHC43500E MODELS MHC3 24324 1 110 087 0 MHC3 30324 1 110 038 0 MHC4 30324 1 110 039 0 MHC4 30324E 1 110 040 0 MHC4 30324E S 1 110 041 0 MHC4 35324E 1 110 042 0 MHC4 35324E CAL 1 110 084 0...

Page 2: ...2 Landa MHC 9 800 950 0 BM Machine Data Label...

Page 3: ...4 Thermal Pump Protection 14 Shutdown Instructions 15 Maintenance Storage 16 After Extended Storage 16 Engine Maintenance 16 Maintenance And Service 17 Unloader Valves 17 Winterizing Procedure 17 High...

Page 4: ...omponents in good working condition They are listed in this general order Storage Engine Maintenance Maintenance And Service Unloader Valves Winterizing Procedure High Limit Hot Water Thermostat Pump...

Page 5: ...perators Important Safety Information WARNING To reduce the risk of injury read operating instructions carefully before using AVERTISSEMENT Pour r duire le risque de blessures lire attentive ment les...

Page 6: ...or torch is permitted AVERTISSEMENT Risque d explo sion Utiliser uniquement dans des endroits o l utilisation d une flamme nue ou d une torche est permise ADVERTENCIA Riesgo de explosi n Opere s lo d...

Page 7: ...ted areas of the pressure washer AVERTISSEMENT Risque de bles sures Les surfaces chaudes peuvent causer des br lures Utiliser uniquement les zones de prise d sign es du pistolet pulv risateur et de la...

Page 8: ...e malfunction of the machine and result in death serious bodily injury and or property damage Follow storage instructions specified in this manual 17 Inlet water must be clean fresh water and no hotte...

Page 9: ...ly cool down or maintain the heating coil may result in a steam explosion 26 Do not overreach or stand on unstable support Keep good footing and balance at all times 27 Do not operate this machine whe...

Page 10: ...unlikely event the unloader valve fails Unloader Valve Safety device which when the spray gun closes prevents over pressurization not shown NOTE If trigger on spray gun is released for more than 2 mi...

Page 11: ...not included Brass Soap Nozzle Variable Pressure Control Wand Burner Switch Thermostat Garden Hose Inlet Connector Strainer Water Supply Hose not included Hour Meter Stackless Top Adapter Kit Stackles...

Page 12: ...el in proper tanks STEP 3 Attach wand to spray gun using teflon tape on threads to prevent leakage Attach swivel connector on discharge hose to spray gun using teflon tape on threads Attach swivel con...

Page 13: ...rating the starter again When the engine starts allow the engine switch to return to the ON position If the engine is to be started without the battery turn switch to start position and pull rope to s...

Page 14: ...best results limit your work area to sections approximately 6 feet square and always apply detergent from bottom to top Allow detergent to remain on surface 1 3 minutes Do not allow detergent to dry...

Page 15: ...to cool below 100 F STEP 5 Open spray gun to relieve remaining pressure STEP 3 Turn engine off Landa MHC 9 800 950 0 BM Sen DEC TACH HOUR 1 10 Burner Switch Burner Switch For MHC3 24324 HA UD Key Swi...

Page 16: ...feel increased pressure which indicates the piston is on its compression stroke and leave it in that position This closes both the intake and exhaust valves to prevent rusting of cylinder 4 Cover the...

Page 17: ...hose into the bucket and connect it to the machine Elevate the bucket and turn the pump on to siphon the anti freeze through the machine If compressed air is available an air fitting can be screwed in...

Page 18: ...band opening may need to be increased for lower altitude the air band may need to be decreased For higher humidity the air band opening may need to be increased for lower relative humidity the air ba...

Page 19: ...om pump unloader to inlet side of the coil 2 Remove thermostat sensor 3 Remove the tank head assembly by unscrewing six screws and lifting the top wrap off 4 Fold back insulation blanket 5 Remove the...

Page 20: ...e center for details BURNER WILL NOT LIGHT There is little or no fuel Fill tank with fuel Improper fuel or water in fuel Drain fuel tank and fill with proper fuel Fuel line is clogged Clean or replace...

Page 21: ...educe fuel pressure PSI Increase air band set for cleaner without max water heat loss LOW WATER TEMPERATURE Fuel is improper or has water in it Replace with clean and proper fuel Fuel pressure is low...

Page 22: ...t higher alti tudes it may be necessary to install a high altitude main jet in the carburetor Contact your local authorized engines sales and service center for details PUMP NOISY Air is in suction li...

Page 23: ...50 hours and every month or 500 hours thereafter Use SAE 10W 40 non foaming oil MAINTENANCE SCHEDULE Pump Oil non foaming SAE 10W 40 Inspect Oil level daily Change After first 50 hours then every 500...

Page 24: ...24 Notes Landa MHC 9 800 950 0 BM...

Page 25: ...9 800 950 0 Printed in U S A...

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