Pressure Washer - HD Cold Water - Electric Powered English 02 To locate your local Kärcher Commercial Pressure Washer Dealer nearest you, visit www.karchercommercial.com Register your product www.kaercher.com/welcome 9.800-086.
Machine Data Label MODELS: HD 2.8/10 ST Ed B 1.575-300.0 HD 4.2/20 ST Ea B 1.575-301.0 HD 4.2/20 ST Eb B 1.575-302.0 HD 4.2/20 ST Ec B 1.575-303.0 HD 4.2/20 ST Eh B 1.575-305.0 HD 3.5/30 ST Ea B 1.575-306.0 HD 3.5/30 ST Eb B 1.575-307.0 HD 3.5/30 ST Ec B 1.575-308.0 HD 3.5/30 ST Eg B 1.575-309.0 HD 3.5/30 ST Eh B 1.575-310.0 2 Karcher HD 300-310 Operator’s Manual 9.800-086.
Table of Contents Machine Data Label . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 How To Use This Manual . . . . . . . . . . . . . . . . . . . . . 4 Safety Introduction & Safety Information . . . . . . . . . . . . . . . 5 Important Safety Information. . . . . . . . . . . . . . . . . . . 6 Operations Component Identification . . . . . . . . . . . . . . . . . . . . . 8 Assembly Instructions . . . . . . . . . . . . . . . . .
How To Use This Manual This manual contains the following sections: • • • • • How to Use This Manual Safety Operations Maintenance Parts List 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.
Safety Introduction & Safety Information Thank you for purchasing this Pressure Washer.We reserve the right to make changes at any time without incurring any obligation. Owner/User Responsibility: The owner and/or user must have an understanding of the manufacturer’s operating instructions and warnings before using this pressure washer. Warning information should be emphasized and understood.
Safety Important Safety Information WARNING T SAFE NS OPERATIO NANCE MAINTE WARNING: To reduce the risk of injury, read operating instructions carefully before using. WARNING Y READ OPERATOR’S MANUAL THOROUGHLY PRIOR TO USE. AVERTISSEMENT: Pour réduire le risque de blessures, lire attentivement les instructions de fonctionnement avant l'utilisation. 1. Read the owner's manual thoroughly.
Safety WARNING: Grip cleaning wand securely with both hands before starting. Failure to do this could result in injury from a whipping wand. AVERTISSEMENT: Agripper la lance de nettoyage avec les deux TRIGGER GUN KICKS BACK — HOLD WITH mains avant de commencer. Le BOTH HANDS non-respect de cette consigne pourrait mener à des blessures causées par le mouvement violent de la lance. WARNING WARNING RISK OF INJECTION OR SEVERE INJURY TO PERSONS. KEEP CLEAR OF NOZZLE.
Operations Component Identification High Pressure Nozzle Soap Nozzle Water Supply Quick Coupler Wand On/Off Switch Garden Hose Inlet Trigger Discharge Nipple Garden Hose (not included) Swivel Connector Spray Gun Detergent Injector Hose Coupler Detergent Pick-up Tube High Pressure Hose Detergent Bucket (not included) Detergent Injector - Allows you to siphon and mix detergents, when used with soap nozzle.
Operations Assembly Instructions Safety Latch Nozzle Coupler High Pressure Hose Spray Gun STEP 1: Attach the high pressure hose to the spray gun using teflon tape on hose threads. Use safety latch to prevent from opening. STEP 2: Connect garden hose to the cold water source. Before installing nozzle, turn on water supply and run machine, allowing water to flush through the system until clear. STEP 3: Insert nozzle into coupler. Release the coupler collar and push the nozzle until the collar clicks.
Operations Operating Instructions Cold Water Source Garden Hose STEP 1: Connect garden hose to the cold water source and turn water on completely. Never use hot water. STEP 2: Trigger the spray gun to eliminate trapped air then wait for a steady flow of water to emerge from the spray wand. Then install nozzle. On/Off Switch STEP 3: Connect to appropriate power supply. Push GFCI reset button. Safety Latch STEP 4: Turn machine on by pushing switch at front of machine.
Operations Detergents And General Operating Techniques WARNING WARNING: Some detergents may be harmful if inhaled or ingested, causing severe nausea, fainting or poisoning. The harmful elements may cause property damage or severe injury. AVERTISSEMENT: Certains détergents peuvent être dangereux s'ils sont inhalés ou ingérés, provoquant de fortes nausées, des évanouissements et l'empoisonnement.
Operations Shutting Down And Clean-Up STEP 1: Remove detergent suction tube from soap container and insert into one gallon of fresh water. Use black soap nozzle with detergent injector. Pull trigger on spray gun and siphon water for one minute. STEP 2: Turn off machine by pushing switch on front panel. STEP 3: Turn off water supply. STEP 4: Press trigger to release water pressure.
Operations Storage Pump Storage CAUTION CAUTION: Always store your pressure washer in a location where the temperature will not fall below 32° F (0° C). The pump in this machine is susceptible to permanent damage if frozen. ATTENTION: Toujours entreposer la laveuse à pression dans un endroit où la température ne sera pas inférieure à 0 °C (32 °F). La pompe sur cette machine est susceptible de subir des dommages si elle est exposée au gel. FREEZE DAMAGE IS NOT COVERED BY WARRANTY.
Maintenance 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 procedure 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.
Maintenance Troubleshooting PROBLEM PUMP RUNNING NORMALLY BUT PRESSURE LOW ON INSTALLATION FLUCTUATING PRESSURE PRESSURE LOW AFTER PERIOD OF NORMAL USE POSSIBLE CAUSE Pump sucking air Check valves sticking Unloader valve seat faulty Nozzle incorrectly sized Worn piston packing Valves worn Blockage in valve Pump sucking air Worn piston packing Insufficient water Nozzle worn Suction or delivery valves worn Suction or delivery valves blocked Unloader valve seat worn Unloader adjusted improperly Worn piston p
Notes 16 Karcher HD 300-310 Operator’s Manual 9.800-086.
Parts Parts KARCHER HD HD 2.8/10 ST Ed B 1.575-300.0 HD 4.2/20 ST Ea B 1.575-301.0 HD 4.2/20 ST Eb B 1.575-302.0 HD 4.2/20 ST Ec B 1.575-303.0 HD 4.2/20 ST Eh B 1.575-305.0 HD 3.5/30 ST Ea B 1.575-306.0 HD 3.5/30 ST Eb B 1.575-307.0 HD 3.5/30 ST Ec B 1.575-308.0 HD 3.5/30 ST Eg B 1.575-309.0 HD 3.5/30 ST Eh B 1.575-310.0 Karcher HD 300-310 Operator’s Manual 9.800-086.
Karcher HD 10 Enlarged Reverse View 63 7 20 64 71 82 13 63 62 78 76 70 9 74 70 Time Delay Option 58 Auto Start Option 61 64 22 12 25 4 5 82 54 80 23 58 6 77 62 13 Auto Start Option 70 64 7 21 64 63 3 62 9 71 61 66 51 19 58 1 64 2 74 76 11 77 75 For Detail See Pump Assy. 22 12 25 1.575-300.0 24 15 8 83 14 83 18 Karcher HD 300-310 Operator’s Manual 9.800-086.
Karcher HD 27 79 43 46 68 44 17 40 41 16 42 50 73 26 28 45 85 50 49 39 86 69 72 57 56 29 53 75 32 37 31 33 59 65 30 67 60 84 47 59 55 78 35 36 34 52 80 19 48 50 81 18 Karcher HD 300-310 Operator’s Manual 9.800-086.
Karcher HD REF 1 2 3 PART NO. - QTY - 4 9.802-551.0 1 TRANSFORMER (301.0, 302.0, 303.0, 306.0, 307.0, 308.0) - 9.804-556.0 1 TRANSFORMER (304.0, 305.0, 309.0, 310.0) 5 8.933-007.0 2 FUSE, ATMR, 1 AMP, 600V (306.0, 307.0, 310.0, 301.0, 302.0, 304.0, 305.0 309.0) 6 7 8 9 - 9.802-462.0 9.802-463.0 9.802-151.0 9.802-457.0 9.802-457.0 2 1 2 4" 5" FUSE, 1/2 AMP, 600V FUSE, PAPER, BUSS FNM-1/2, 250V MIDGET CONTACTOR SWIVEL, 1/2" JIC FEM, PUSH-ON DIN RAIL, 35 MM DIN RAIL, 35 MM 20 10 9.
Karcher HD REF PART NO. QTY 28 9.802-875.0 1 29 9.802-451.0 1 DESCRIPTION BASE CABINET, COLD WATER, WRINKLE BLACK SWITCH, ROCKER, CARLING W/GREEN LENS - 9.802-452.0 1 SWITCH, ROCKER, CARLING RED 30 31 32 33 34 9.802-066.0 9.802-064.0 8.757-203.0 8.707-000.0 8.755-033.0 4 5 1 1 1 35 9.802-225.0 1 36 9.802-171.
Karcher HD REF 48 PART NO. 9.802-710.0 QTY 4 - 9.802-720.0 4 49 50 9.800-034.0 9.802-073.0 1 7 ft. 51 9.802-779.0 4 NUT, 3/8" ESNA, NC 52 53 54 55 56 57 58 59 9.802-800.0 9.803-081.0 9.802-773.0 9.802-723.0 9.802-067.0 9.802-811.0 9.802-431.0 9.802-430.0 9.802-434.0 8.925-510.0 8.925-722.0 8.925-723.0 9.802-794.0 1 1 2 4 4 4 1 1 1 1 1 1 8 60 9.802-074.0 4 61 9.800-040.
Karcher HD REF 67 68 69 70 PART NO. 8.932-970.0 9.800-007.0 9.800-013.0 9.802-514.0 QTY 1 1 1 1 71 8.925-726.0 1 - 8.925-728.0 1 - 8.925-730.0 1 72 73 9.802-779.0 8.718-980.0 4 4 DESCRIPTION LABEL, COLD WATER OUTLET LABEL, WARNING, EXPOSED PULLEYS LABEL, INTENDED FOR INDOOR USE STRAIN RELIEF, SMALL, LQ TITE HARNESS CORD NO OPTION HOUR METER 1700 HARNESS CORD AUTO START HOUR METER 1700 HARNESS CORD TIME DELAY HOUR METER 1700 NUT, 3/8" ESNA WASHER, 5/16" FLAT 74 9.804-595.
Hose & Spray Gun 8 4 6 3 5 1 7 2 REF 1 24 2 3 4 5 PART NO. 9.802-166.0 9.802-100.0 8.917-057.0 4.775-054.0 9.802-219.0 8.712-398.0 QTY 1 1 1 1 1 1 DESCRIPTION COUPLER, 3/8” FEMALE QUICK COUPLER O-RING HOSE, 3/8” X 50', 1 WIRE EASY! FORCE ADVANCED KNA WAND W/SIDE GRIP NOZZLE, SOAP, BRASS 6 - - NOZZLE 7 8 - 8.756-797.0 9.802-164.0 9.802-096.0 1 1 1 INJECTOR, CHEMICAL, NON ADJ 0.083(2.
Multi-Room Installation Karcher HD 300-310 Operator’s Manual 9.800-086.
Specifications Machine Model Pump Model Part # Pump Pulley Pulley Part # Pump Bushing Pump Bushing Part # Size Voltage/ ph HZ 1.575-300.0 KD3030R 9.804-006.0 AK74H 9.802-369.0 24MM 9.802-402.0 2HP 120V/1PH 60 1.575-301.0 KM4035R 8.751-189.0 2AK74H 9.802-374.0 24MM 9.802-402.0 6.2HP 230V/1PH 60 1.575-302.0 KM4035R 8.751-189.0 2AK74H 9.802-374.0 24MM 9.802-402.0 6.2HP 230V/3PH 60 1.575-303.0 KM4035R 8.751-189.0 2AK74H 9.802-374.0 24MM 9.802-402.0 6.
Specifications Model Motor Part # Motor Pulley Motor Pulley Part # Motor Bushing Motor Bushing Part # Belt Size Belt Part # Contactor Part # Overload Part # 300.0 8.754-710.0 AK32x5/8 9.804-004.0 N/A N/A AX40 (1) 9.804-005.0 8.724-268.0 N/A 301.0 9.802-336.0 2AK56H 9.802-373.0 HX1-1/8" 9.802-400.0 AX42 (2) 9.802-411.0 8.724-276.0 N/A 302.0 8.751-004.0 2AK56H 9.802-373.0 HX1-1/8" 9.802-400.0 AX42 (2) 9.802-411.0 8.724-268.0 8.724-304.0 303.0 8.751-004.0 2AK56H 9.
Pump 18 1 10 14 3 4 2 9 18 Time Delay Shutdown Option 4 7 6 12 16 5 8 Auto Start/Stop Option 15 11 3 17 13 28 Karcher HD 300-310 Operator’s Manual 9.800-086.
Pump REF 1 2 3 4 5 6 7 8 9 10 11 12 13 PART NO. 8.750-298.0 8.757-616.0 8.757-656.0 8.757-262.0 8.757-619.0 8.757-485.0 8.757-200.0 8.757-391.0 9.802-151.0 9.802-259.0 8.757-771.0 8.757-184.
VB8 Unloader Valve 9.802-362.0 PA 8@3650 2 30 29 27 28 16 25 37 15 32 31 11 27 26 12 10 24 9 23 22 38 13 6 14 8 13 21 5 7 40 36 39 18 4 35 19 17 34 33 3 2 1 30 20 Karcher HD 300-310 Operator’s Manual 9.800-086.
VB8 Unloader Valve REF PART NO. QTY 1 60.0059.31 1 2 10.3070.02* 2 3 60.0053.51 1 4 60.0052.31 1 5 10.3213.00* 1 6 60.1215.35 1 7 10.3170.08* 1 8 60.1206.51 1 9 10.3001.01* 1 10 10.3066.01* 1 11 60.1205.31 1 12 60.2221.20* 1 13 10.4021.00* 2 14 10.3175.00* 1 15 60.1204.31 1 16 10.3167.01* 1 17 60.1203.31 1 18 16.2100.00 1 19 60.1207.31 1 20 14.3719.00 1 21 60.1208.61 1 22 60.1210.31 1 23 14.7421.50 1 24 60.1209.31 1 25 29.0087.51 1 26 29.0089.84 1 27 8.750-169.0 1 28 10.3206.01 1 29 16.3020.00 2 30 29.
KB Series Pump 26 26 48 27 28 44 29 43 30 42 31 34 32 22 41 40 47 39 33 46 38 37 45 36 15 TORQUE SPECS 14 25 24 13 23 22 21 12 20 16 17 18 6 19 5 4 3 1 2 29 7 8 31 35 27 26 9 ITEM # FT. LBS. 15 65 18 66 26 8 36 10 44 10 10 15 REF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 32 14 13 PART NO. 8.754-841.0 8.754-846.0 9.803-199.0 9.803-199.0 9.802-926.0 8.754-852.0 8.717-233.0 9.803-948.0 9.803-949.0 8.754-851.0 8.718-973.0 8.754-854.0 8.
KB Series Pump REF 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 PART NO. 8.707-262.0 9.802-939.0 8.717-137.0 9.803-954.0 8.754-843.0 9.802-914.0 9.803-955.0 8.754-829.0 8.754-830.0 9.803-167.0 8.754-219.0 8.933-010.0 8.754-855.0 8.754-092.0 8.754-848.0 9.803-962.0 8.754-827.0 9.803-965.0 9.803-966.0 9.803-218.0 8.933-020.0 8.754-847.0 8.754-842.0 9.803-906.0 9.803-202.
KM.3 Series Pump 8.751-186.0 8.751-187.0 8.751-188.0 8.751-189.0 8.751-190.0 8.751-191.0 8.751-192.0 KM3540R.3 KM4030R.3 KM4030L.3 KM4035R.3 KM4035L.3 KM5030R.3 KM5030L.3 TORQUE SPECS REF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 23 34 PART NO. 8.751-216.0 9.803-199.0 9.802-926.0 8.751-218.0 9.802-928.0 9.802-938.0 9.802-884.0 9.803-198.0 9.802-925.0 9.802-944.0 QTY 1 3 3 3 3 3 3 1 1 1 6 6 6 6 8 16 1 1 8 DESCRIPTION CRANKCASE PLUNGER OIL SEAL O-RING Ø1.78 X 31.
KM.3 Series Pump REF 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 PART NO. 8.717-210.0 9.803-192.0 8.933-011.0 8.751-222.0 8.751-223.0 9.803-167.0 9.802-921.0 9.803-140.0 9.803-178.0 8.717-209.0 8.751-224.0 9.803-158.0 8.751-228.0 9.803-218.0 9.803-238.0 8.933-016.0 8.751-229.0 9.803-197.0 9.803-202.0 9.802-939.0 QTY 1 2 2 1 1 1 1 1 2 1 3 3 3 3 3 3 3 3 3 3 3 6 6 1 1 1 1 5 KIT NUMBERS DESCRIPTION CLOSED BEARING HOUSING O-RING Ø1.78 X 60.
VRT3 Unloader 8.750-297.0, 8 GPM, 2320 PSI 8.750-298.0, 8 GPM, 3630 PSI 8.750-299.0, 8 GPM, 4500 PSI 20 14 19 8 9 18 10 9 26 17 1 22 16 23 3 5 6 7 12 11 36 25 6 13 PART NO. 8.750-713.0 8.750-712.0 8.750-709.0 8.750-710.0 - 21 4 15 15 REF 25 18 - 24 2 QTY 1 1 - DESCRIPTION OUTLET FITTING KNOB, UNLOADER REPAIR KIT, VRT3, 2320/3630 PSI REPAIR KIT, VRT3, 4500 PSI (KIT ITEMS: 3, 4, 6, 9-12, 21, 24) Karcher HD 300-310 Operator’s Manual 9.800-086.
VRT3 Unloader Unloader Adjustment Procedures 1. Remove lock nut (Item 19). 2. Remove adjustment knob (Item 18). 3. Loosen the two (2) nuts (Item 15), move them upward on stem (Item 8) until you see 4 or more threads below the nut. 4. Re-attach adjusting knob (Item 18). 5. Start machine. Open the trigger of the spray gun. Increase pressure by turning adjustment knob (Item 18) clockwise until pressure is at the desired operating pressure. 6.
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