Landa MHP4-3000, Operator'S Manual

Page 1: ...MHP For technical assistance or the dealer nearest you consult our web page at www landa com 8 913 925 0 OPERATOR S MANUAL LISTED 89139250 7 MHP4 3000 MHP4 3500 ...

Page 2: ...perating Instructions 8 Detergents General Washing Techniques 9 Shutdown Cleanup 10 Troubleshooting 11 14 Preventative Maintenance 15 17 Maintenance Schedule Oil Change Record 18 Exploded View Control Panel and Parts List 19 Exploded View Left Side All Models 20 Exploded View Right Side All Models 21 Exploded View Parts List All Models 22 23 Exploded View Detergent Float Combination 24 Detergent F...

Page 3: ...tch what you are doing WARNING keep water spray away from electrical wiring WARNING Keep wand hose and water spray away from electric wiring or fatal electric shock may result 4 All installations must comply with local codes Contact your electrician plumber utility company or the selling distributor for specific details WARNING ear protection must be worn WARNING Thismachineexceeds 85 db appropria...

Page 4: ...pery surfaces Important Safety Information In an overfilling situation additional precautions are necessary to ensure that the situation is handled in a safe manner WARNING Risk of injury Disconnect battery ground terminal before servicing 8 When in use do not place machine near flammable objects as the engine is hot 9 Oil burning appliances shall be installed only in locations where combustible d...

Page 5: ... using or bodily injury may result 25 Before disconnecting discharge hose from water outlet turn burner off and open spray gun to al low water to cool below 100 before stopping the machine Then open the spray gun to relieve pres sure Failure to properly 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 bala...

Page 6: ...ation of water and detergent onto cleaning surface with trigger device Includes safety latch Detergent Valve Allows you to siphon and mix detergents Not Shown Wand Must be connected to the spray gun High Pressure Hose Connect one end to water pump high pressure discharge nipple and the other end to spray gun Rupture Disk Secondary pressure release in the unlikely event the unloader valve fails Unl...

Page 7: ...rting it onto discharge nipple and then pushing coupler collar forward to lock in place STEP 5 Fill gasoline tank and check engine oil level Fill fuel oil tank Do not confuse gasoline and fuel oil diesel tanks Keep proper fuel in proper tanks Trigger Gun High Pressure Hose Wand Safety Latch STEP 4 Check oil level on sight glass on side of pump Oil should be visible one half way up sight glass SAE ...

Page 8: ...gine fails to start release the switch and wait ten seconds before operating the starter again When the engine starts allow the engine switch to re turn to the ON position If the engine is to be started without the battery turn switch to start position and pull rope to start Turn off choke CAUTION Small engines may kick back Do not hold pull rope tightly in hand The four color coded quick connect ...

Page 9: ... the pump cleaning tips Pre rinse cleaning surface with fresh water Place de tergent suction tube directly into cleaning solution and apply to surface at low pressure for 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 on surface If surface appears ...

Page 10: ...cates 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 pressure washer and store in a clean dry place that is well ventilated away from open flame or sparks NOTE The use of a fuel additive such as STA BIL or an equivalent will minimize the formulation of fuel deposits during storage Such ...

Page 11: ...ocal authorized engine sales and service center for details Slow engine RPM Set engine speed at proper specifications 3400 3600 RPM BURNER WILL NOT LIGHT Continued on next page Little or no fuel Fill tank with fuel Improper fuel or water in fuel Check and replace if necessary Clogged fuel line Clean or replace Plugged fuel filter Replace as needed Misadjusted burner air bands Replace air bands for...

Page 12: ...S Improper fuel or water in fuel Drain tank and replace contaminated fuel Improper air adjustment Readjust air bands on burner assembly Low fuel pressure Adjust fuel pump pressure to specifications Plugged or dirty burner nozzle Replace nozzle Faulty burner nozzle spray pattern Replace nozzle Heavy accumulation of soot on coils and burner assembly Remove coils and burner assembly clean thoroughly ...

Page 13: ...isassemble and clean thoroughly High viscosity of detergent Dilute detergent to specifications Hole in detergent line s Repair hole Low detergent level Add detergent if needed PUMP RUNNING NORMALLY BUT PRESSURE LOW ON INSTALLATION Pump sucking air Check water supply and possibility of air seepage Valves sticking Check and clean or replace if necessary Unloader valve seat faulty Check and replace i...

Page 14: ...PUMP Piston packing worn Check and replace if necessary O Ring plunger retainer worn Check and replace if necessary Cracked piston Check and replace if necessary Pump protector Lower water supply pressure Do not run with spray gun closed longer than 5 minutes OIL DRIPPING Oil seal worn Check and replace if necessary EXCESSIVE VIBRATION IN DELIVERY LINE Irregular functioning of valves Check and rep...

Page 15: ...rated outdoors under freezing conditions Preventative Maintenance During winter months when temperatures drop below 32 F protecting your machine against freezing is necessary Store the machine in a heated room If this is not possible then mix a 50 50 solution of antifreeze and water into a 5 gallon bucket Place a short section of garden hose into the bucket and connect it to the machine Elevate th...

Page 16: ... fuel solenoid The solenoid then closes shutting off the supply of fuel to the combustion chamber Controlling the flow of fuel in this way allows for an instantaneous burn or no burn situation thereby eliminating high and low water temperatures and combustion smoke normally associated with machines incorporating a spray gun CAUTION Periodic inspection is recommended to insure that the fuel solenoi...

Page 17: ...r operation discontinue use and readjust air bands NOTE If a flue is installed have a professional serviceman adjust your burner for a 1 or 2 smoke spot on the Bacharach scale Preventative Maintenance Coil Removal Removal of coil because of freeze breakage or to clean soot from it can be done quickly and easily Step 1 Disconnect hose from pump to inlet side of the coil Step 2 Disconnect electrical...

Page 18: ... 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 10 40W Inspect Oil level daily Change After first 50 hours then every 500 hours or annually Clean Burner Filter Monthl...

Page 19: ...94 0 Nut Cage 1 4 x 12 Gauge 13 11 8 912 712 0 Cover MHP Control 1 12 9 802 283 0 Meter Hour 1 ITEM PART NO DESCRIPTION QTY 13 9 802 453 0 Switch Curvette 120 V 220 V 1 14 9 802 456 0 Light Indicator Green 12 VDC 1 15 8 902 427 0 Valve Assy Chemical Skid 1 16 8 900 300 0 Label Landa Logo 1 17 8 900 297 0 Label Nozzle Det Valve MHP 1 18 8 932 968 0 Label Outdoor Use 1 19 9 802 695 0 Nut 10 32 4 20 ...

Page 20: ... PR EC AU CIO N A VE RT ISS EM EN T W A R N IN G EX PO SE D PU LL EY S AN D BE LT S CA N CA US E IN JU RY PR EC AU CIO N A VE RT ISS EM EN T W A R N IN G 89139250 2 1 65 2 3 13 7 6 4 5 32 85 19 20 21 18 15 16 17 28 76 33 73 70 74 72 24 35 26 25 23 22 62 60 59 64 9 10 8 12 11 115 91 116 117 118 71 77 90 94 90 91 17 35 92 15 111 113 113 21 114 112 65 ...

Page 21: ...6 44 83 89 90 94 63 63 48 49 100 95 96 97 98 55 57 107 24 39 46 45 54 69 75 43 42 67 68 41 43 42 78 80 53 52 82 84 92 57 87 90 93 14 101 99 90 89 34 79 51 Wheel Kit Optional For Detail See Control Panel Illus 105 103 82 102 81 30 39 106 40 38 104 65 86 27 108 61 29 82 61 109 36 36 31 120 47 120 125 128 127 126 124 123 110 122 122 122 ...

Page 22: ... 32 x 16 Gauge 4 33 8 918 432 0 Hose 18 x 3 8 Pressure Loop 1 34 8 912 705 0 Panel MHP Control 1 35 9 802 754 0 Screw 1 4 x 1 2 HH NC Whiz Loc 4 36 8 750 246 0 Screw 1 4 x 1 2 Whiz Loc 10 ITEM PART NO DESCRIPTION QTY 37 9 802 753 0 Screw 1 4 x 3 4 HH NC Whiz Loc 2 38 8 707 254 0 Pump Protector 3 8 PTP 1 39 See Pump Specifications Page 28 29 1 40 8 750 299 0 Unloader VRT 3 8 GPM 4500 PSI 1 41 8 706...

Page 23: ... 3 95 9 802 154 0 Push on Male 11 13 HP 1 8 707 019 0 Push on 3 8 Male 16 HP 1 96 9 802 259 0 Hose 1 2 Push on 16 HP 5 9 802 254 0 Hose 1 4 Push on 11 13 HP 5 97 9 802 153 0 Swivel 1 4 JIC FEM Push on 11 13 HP 1 9 802 151 0 Swivel 1 2 JIC FEM Push on 16 HP 1 98 9 802 126 0 Plug 1 2 JIC Flare 16 HP 1 9 802 125 0 Plug 1 4 JIC Flare 11 13 HP 1 99 9 802 776 0 Nut 5 16 ESNA NC 4 100 8 912 723 0 Shield ...

Page 24: ...RE WASHER 24 89139250 1 22 17 20 21 16 11 22 23 13 14 15 19 18 10 5 4 3 1 2 2 26 25 12 30 30 29 24 9 Optional Wheel Kit Assembly 22 22 Float Tank Option Landa Pump With Float Tank Option Detergent Valve Option 7 8 6 27 Exploded View Detergent Float Tank 28 ...

Page 25: ...at 1 ITEM PART NO DESCRIPTION QTY 12 8 707 058 0 Strainer 1 4 Hose Barb 1 13 8 707 061 0 Strainer 1 2 Basket 1 14 9 802 131 0 Elbow 1 2 JIC x 1 2 90 1 15 8 707 000 0 Connector 1 2 Anchor 1 16 8 719 039 0 Washer 1 3 16 x 2 1 4 STL RBR 1 17 8 707 020 0 Push On 3 4 x 1 2 Male 1 18 9 802 822 0 Screw 5 16 18 x 1 1 2 SS Button Socket 1 19 9 802 106 0 Plug Float Tank 1 20 9 802 824 0 Washer 5 16 SS 1 21 ...

Page 26: ... MEG 2504 Green 4 3000 4 3500 1 8 712 348 0 Nozzle SAQC MEG 4004 White 4 3000 4 3500 1 8 712 345 0 Nozzle SAQC MEG 0004 Red 4 3000 4 3500 1 ITEM PART NO DESCRIPTION QTY 5 8 712 350 0 Nozzle SAQC MEG 1545 Yellow General Pump 5 3500 1 8 712 351 0 Nozzle SAQC MEG 2545 Green General Pump 5 3500 1 8 712 352 0 Nozzle SAQC MEG 4045 White General Pump 5 3500 1 8 712 349 0 Nozzle SAQC MEG 0045 Red General ...

Page 27: ...ART NO DESCRIPTION QTY 1 9 802 216 0 Injector Detergent Non Adjust 3 1 2 6 390 126 0 Clamp Hose 46 54 ST 2 3 9 802 251 0 Tube 1 4 x 1 2 Clear Vinyl 6 ft 4 8 707 057 0 Strainer 1 4 Hose Barb 1 3 2 1 4 2 9 802 225 0 Exploded View Detergent Injector Detergent Injector Parts List ...

Page 28: ...lley Part Bushing Bushing Part Belt Size Qty MHP4 30324E LT4035 8 904 869 0 2AK84H 9 802 375 0 25mm 9 802 403 0 AX38 2 MHP4 35224E LT4035 8 904 869 0 2BK90 8 715 593 0 25mm 9 802 403 0 BX44 2 MHP4 35324E LT4035 8 904 869 0 2BK90 8 715 593 0 25mm 9 802 403 0 BX39 2 parts SPECIFICATIONS landa pump PUMP ENGINE ...

Page 29: ...Pulley Part Bushing Part 4 30324E 9 802 410 0 GX340 389cc HONDA 8 750 578 0 2AK30 9 803 298 0 HX1 5 11100 4 35224E 8 715 705 0 Vanguard 479cc BRIGGS 9 802 325 0 2BK32 8 715 576 0 HX1 5 11100 4 35324E 5 604039 GX390 389cc HONDA 8 750 579 0 2BK32 8 715 576 0 HX1 5 11100 Specifications CONTROLS ENGINE CON T ...

Page 30: ...LANDA MHP 8 913 925 0 Rev 8 13 OPERATOR S MANUAL PRESSURE WASHER 30 For best performance specify genuine Landa Sure Fire replacement parts Landa Sure Fire burner Replacement parts ...

Page 31: ...IZ LOC FLANGE 3 8 8 751 073 0 COUPLING FLEX 5 16 x 5 16 1 38 8 750 816 0 SCREW 10 32 X 1 4 GROUNDING 1 9 8 750 520 0 FAN 4 53 X 2 42 1 2 BORE F115 62S 1 39 8 750 768 0 SCREW 1 4 20 x 1 WHIZ LOC FLANGE 4 9 8 751 072 0 FAN 4 53 x 2 42 x 313 BORE F115 625 1 40 8 750 771 0 SCREW 1 4 20 X 1 2 PHIL FHMS 4 11 8 750 547 0 CONNECTOR 37 DEG FLARE X 1 8 NPT LONG 1 42 LABEL BRAND NAME 1 12 8 750 545 0 CONNECT...

Page 32: ... Tapered 2 31 9 803 148 0 Crankshaft GT4040 1 5030 1 6035 1 1 9 803 149 0 Crankshaft GT 4035 1 32 9 803 167 0 Crankshaft Key 1 33 9 802 923 0 Oil Dip Stick 1 34 9 803 139 0 Crankshaft Seal 1 35 9 803 177 0 Shim 2 36 9 803 181 0 Bearing Housing 1 37 See Kit Plunger Bolt 3 38 See Kit Copper Spacer 3 item Part no Description QTY 1 9 803 163 0 Crankcase 1 2 9 803 195 0 Plunger Guide 3 3 See Kit Plunge...

Page 33: ...ss G3 4 1 53 9 802 939 0 Cover Screw 5 Part available in kit See below Repair kit number 8 916 488 0 8 916 487 0 8 916 322 0 8 916 323 0 9 802 607 0 9 802 611 0 Kit description Plunger U Seal 20mm LT 4040 1 LT 6035 1 LT 4035 1 Plunger U Seal 22mm LT 5030 1 U Seal Packing Assy 20mm LT 4040 1 LT 6035 1 LT 4035 1 U Seal Packing Assy 22mm LT 5030 1 Plunger 20mm LT 4040 1 LT 6035 1 LT 4035 1 Plunger 22...

Page 34: ...rt of the lock nut Item 19 If adjustment knob Item 18 DOES NOT make contact with upper nut Items 15 remove adjusting knob Item 18 re adjust raise nuts Items 15 on stem Item 8 and re attach adjustment knob Item 18 then repeat step 6 If adjustment knob Item 18 DOES make contact with upper nut release the trigger of the spray gun and watch the pressure gauge for the pressure increase spike This spike...

Page 35: ... center field labor charges or freight damage WHAT YOU MUST DO TO OBTAIN WARRANTY SERVICE While not required for warranty service we request that you register your LANDA pressure washer by returning the com pleted registration card In order to obtain warranty service on items warranted by LANDA you must return the product to your Authorized LANDA Dealer freight prepaid with proof of purchase withi...

Page 36: ...Form 8 913 925 0 Revised 8 13 Printed in U S A ...