R OPERATOR’S MANUAL MODEL HD 3.0/30 Pb HD 3.7/35 Pb HD 3.0/40 Pb ORDER # 1.575-152.0 1.575-154.0 1.575-155.0 To locate your local Kärcher Commercial Pressure Washer Dealer nearest you, visit www.karchercommercial.com 9.807-623.
CONTENTS Introduction & Important Safety Information .........................................3-4 Component Identification ......................................................................... 5 Assembly Instructions .............................................................................. 6 Operating Instructions...........................................................................7-8 Detergents & Cleaning Techniques..........................................................
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.
PRESSURE WASHER OPERATOR’S MANUAL IMPORTANT SAFETY INFORMATION WARNING WARNING: Keep wand, hose, and water spray away from electric wiring or fatal electric shock may result. 9. Do not spray water on or near electrical components. KEEP WATER SPRAY AWAY FROM ELECTRICAL WIRING. WARNING RISK OF EXPLOSION: DO NOT SPRAY FLAMMABLE LIQUIDS. RISK OF INJECTION OR SEVERE INJURY TO PERSONS. KEEP CLEAR OF NOZZLE.
Unloader Pump Protector Pump Straight Through Wand Detergent Injector Inlet Screen PRESSURE WASHER OPERATOR’S MANUAL COMPONENT IDENTIFICATION Pressure Nozzle Garden Hose (not included) High Pressure Hose Starter Grip Detergent Bucket (not included) Pump — Develops high pressure. Wand — Must be connected to the spray gun. Starter Grip— Used for starting the engine manually.
PRESSURE WASHER OPERATOR’S MANUAL ASSEMBLY INSTRUCTIONS Carriage Bolt Handle Bolts Alignment Holes Nut Nut Washer Frame Assy. Studs STEP 1: Attach the handle to the frame of the pressure washer. Note: It may be necessary to move the handle supports from side to side in order to align the handle so it will slide over the frame supports. STEP 2: Insert the carriage bolt through the holes from the outside of the unit and attach a nut from the inside of the machine. Tighten nuts.
Pump Oil Dipstick Engine Oil Dipstick Oil Window STEP 1: Check engine oil level. Oil level should be level with the bottom of the oil filler neck. Be sure the machine is level when checking the oil level. (Refer to the engine's operating manual included with machine.) We recommend that the oil be changed after the first 5 hours of use, then once every 50 hours. Note: Improper oil levels will cause low oil sensor to shut off engine.
PRESSURE WASHER OPERATOR’S MANUAL OPERATING INSTRUCTIONS (CONT.) On-Off Switch STEP 7: Turn the engine switch to "On" position. On Briggs engines, move the throttle lever to "Fast" position, shown on engine as a rabbit. STEP 8: Pull the starter grip. If the engine fails to start after 2 pulls, squeeze the trigger gun to release pressure and repeat step. Return starter gently. After the engine warms up enough to run smoothly, move choke to run position and throttle to fast position.
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. STEP 1: Connect detergent injector to discharge nipple on machine. Connect high pressure hose to injector with quick coupler. (Check to make sure locking couplers are in proper position before applying water pressure).
PRESSURE WASHER OPERATOR’S MANUAL SHUTTING DOWN AND CLEAN-UP On-Off Switch STEP 1: Remove detergent suction tube from container and insert into one gallon of fresh water. Slide nozzle forward for low pressure or to connect black detergent nozzle into wand quick coupler. Pull trigger on spray gun and siphon water for one minute STEP 2: Turn off the engine. STEP 3: Turn off water supply. High Pressure Outlet Pump Water Inlet STEP 4: Press trigger to release water pressure.
PROBLEM LOW OPERATING PRESSURE POSSIBLE CAUSE SOLUTION Faulty pressure gauge Install new gauge. Insufficient water supply Use larger supply hose; clean filter at water inlet. Old, worn or incorrect spray nozzle Match nozzle number to machine and/or replace with new nozzle. Belt slippage Tighten or replace; use correct belt. Plumbing or hose leak Check plumbing system for leaks. Re-tape leaks with teflon tape. Faulty or mis-adjusted unloader valve Adjust unloader for proper pressure.
PRESSURE WASHER OPERATOR’S MANUAL 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 procedures 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.
37 38 39 32 80 Pump 155.0 44 84 7 Pump 152.0 45 41 36 88 79 39 78 69 28 89 28 57 26 87 25 38 82 42 77 37 32 91 76 75 74 72 52 28 51 46 50 62 36 32 81 43 44 43 42 73 35 PRESSURE WASHER OPERATOR’S MANUAL EXPLODED VIEW - 1.575-152.0,154.0,155.
PRESSURE WASHER OPERATOR’S MANUAL EXPLODED VIEW PARTS LIST - 1.575-152.0,154.0,155.0 ITEM PART NO. DESCRIPTION QTY ITEM PART NO. 37 DESCRIPTION QTY 8.706-955 Hose Barb, 1/4" Barb x 1/8" ML Pipe, 90° (All Except 155.0 & 154.0) 8.706-940.0 Hose Barb, 1/4" Barb x 1/8" ML Pipe (154.0) 1 1 9.802-064.0 Grommet, Rubber, Nozzle Holder 5 2 8.920-262.0 Handle, Grab, Chrome 1 3 9.800-723.0 Label, Cold Water Handle 1 4 9.803-126.0 Plate, Warning/Instruction, Black 1 5 9.803-098.
ITEM PART NO. DESCRIPTION QTY 58 9.802-802.0 Washer, 1/4" Flat 10 59 9.802-773.0 Nut, 1/4" ESNA 8 60 8.718-980.0 Washer, 5/16" Flat 4 61 9.802-776.0 Nut, 5/16" ESNA 4 62 9.802-802.0 Washer, 1/4" Flat, SAE 6 63 9.802-741.0 Bolt, 8mm x 16mm Hex (152.0) 4 9.802-744.0 Bolt, 10mm x 20mm 4 (154.0,155.0) 64 8.706 -860.0 Tee, 1/2" Branch (155.0) 8.706-854.0 Tee, 1/4" Branch (152.0) 1 1 65 8.706-984.0 Adapter, 1/2" x 1/2" (152.0) 1 66 9.800-049.
Model GPM Pressure (PSI) Nozzle Size Pump Pump Part No. Unloader Part No. Engine Engine Part No. Pump Pulley Pump Pulley Part No. 1.575-152.0 3.0 3000 3.5 KD3030 9.804-006.0 9.175-018.0 GX270 (270cc) 8.750-680.0 2BK80 9.802-389.0 1.575-154.0 3.7 3500 4.0 KM4035R.3 8.751-189.0 9.175-018.0 GX390 (390cc) 8.750-580.0 2BK90H 8.715-593.0 1.575-155.0 3.0 4000 3.0 KM3540R.3 8.751-186.0 8.750-300.0 GX390 (390cc) 8.750-580.0 2BK80H 9.802-389.
Model Pump Bushing Bushing Part No. Engine Pulley Pulley Part No. Engine Bushing Bushing Part No. Belt Size Belt Part No. 1.575-152.0 24MM 9.802-402.0 2BK40H 9.802-384.0 HX1" 9.802-398.0 BX38 (2) 9.802-417.0 1.575-154.0 24MM 9.802-402.0 2BK32H 9.802-381.0 HX1" 9.802-398.0 BX39 (2) 9.802-418.0 1.575-155.0 24MM 9.802-402.0 2BK40H 9.802-384.0 HX1" 9.802-398.0 BX38 (2) 9.802-417.0 PRESSURE WASHER Specifications SPECIFICATIONS 17 9.807-623.0 • Rev.
fications HOSE & SPRAY GUN ASSEMBLY 2 PRESSURE WA 1 3 4 12 7 11 8 5 9 10 6 HOSE & SPRAY GUN ASSEMBLY PARTS LIST ITEM PART NO. DESCRIPTION QTY 1 9.802-219.0 Wand Assy., Side Grip w/1/4" Coupler, 35-1/2" 1 2 8.710-384.0 Gun, St-1500, 5000 PSI, 10.4 Gpm 1 3 9.802-164.0 Coupler, 1/4” Female, Brass 1 4 Nozzle, See Breakdown for Part Numbers 5 8.739-125.0 Hose, 3/8" x 50', 1 Wire, Tuff-Flex, (150.0, 151.0, 152.0) 8.739-203.0 Hose, 3/8" x 50', 2 Wire,Tuff-Flex (154.0, 155.0) 1 1 6 9.
8.750-300.0, 8 GPM, 4500 PSI EZ Start ITEM PART NO. 14 24 17 DESCRIPTION QTY 8.750-712.0 8.750-713.0 Outlet Fitting Knob, Unloader 1 1 8.750-710.0 Repair Kit, VRT3, 4500 PSI (Kit Items: 1, 4, 8-12, 16, 21-22) 15 19 3 1 24 PRESSURE WASHER OPERATOR’S MANUAL VTR3 UNLOADER EXPLODED VIEW AND PARTS LIST 9 1 2 23 7 18 6 5 11 22 21 4 20 20 12 10 14 13 25 10 16 8 Unloader Adjustment Procedures 1. 2. 3. 4. 5. Remove lock nut (Item 19). Remove adjustment knob (Item 24).
9.175-018.0 UU1 3500PSI, UNIVERSAL UNLOADER (SPARE) 21 14 2 21 3 20 10 OPERATOR’S MANUAL PRESSURE WASHER UU1 UNLOADER EXPLODED VIEW 16 18 5 1 15 19 6 27 7 25 23 25 4 24 8 22 27 28 26 13 15 26 12 17 27 23 9 11 UU1 UNLOADER EXPLODED VIEW PARTS LIST ITEM PART # 1 DESCRIPTION 8.751-394.0 Piston Housing KIT QTY D O-Ring Backup 6 x 1.45 x 1.68 A, D 1 1 19 Ball Housing Assy C, D 1 1 20 O-Ring 6.75 x 1.
PRESSURE WASHER OPERATOR’S MANUAL KM.3 SERIES PUMP EXPLODED VIEW 8.751-189.0 KM4035R.3 8.751-186.0 KM3540R.3 TORQUE SPECS Item # Ft.-lbs 14 75 15 30 23 8 33 9 43 13 48 7.6 KM.3 SERIES PUMP EXPLODED VIEW PARTS LIST ITEM PART NO. DESCRIPTION 1 Crankcase 8.751-216.0 ITEM PART NO. DESCRIPTION QTY 1 23 9.802-944.0 Hexagonal Screw 8 24 8.717-210.0 Closed Bearing Housing 1 QTY 2* See Kits Below Plunger Oil seal 3 3* See Kits Below O-Ring Ø1.78 x 31.
PRESSURE WASHER OPERATOR’S MANUAL KM.3 SERIES PUMP EXPLODED VIEW PARTS LIST (CONT.) ITEM PART NO. DESCRIPTION QTY 40 9.803-158.0 Connecting Rod 3 41 8.751-228.0 Connecting Rod Pin 3 42 9.803-218.0 Spring Washer 6 43 9.803-238.0 Connecting Rod Screw 6 44 70-060009 O-Ring, Ø2.62 x 126.67 1 45 8.751-229.0 Crankcase Cover 1 46 9.803-197.0 O-Ring, Ø1.78 x 14 1 47 9.803-202.0 Sight Glass 3/4 1 48 9.802-939.0 Cover Screw 5 * Available in kit (See below) REPAIR KIT NO. 8.
PRESSURE WASHER OPERATOR’S MANUAL KD.1 SERIES PUMP EXPLODED VIEW 9.803-417.0 KD 3025.1 9.804-006.0 KD 3030.1 9.804-019.0 KD 4020.1 TORQUE SPECS Item # Ft.-lbs 14 65 17 18 25 7.6 34 7 44 13 KD.1 SERIES PUMP EXPLODED VIEW PARTS LIST ITEM PART NO. DESCRIPTION QTY 9.803-947.0 DESCRIPTION O-Ring Ø1.78 x 15.54 QTY 6 2* See Kits Below Plunger Oil Seal 3 12* See Kits Below Valve Assembly 6 3* See Kits Below O-Ring Ø1.78 x 28.30 3 13* 9.803-948.0 O-Ring Ø2.62 x 18.
PRESSURE WASHER OPERATOR’S MANUAL KD.1 SERIES PUMP EXPLODED VIEW PARTS LIST ITEM PART NO. DESCRIPTION QTY 33 8.933-010.0 Crankshaft Seal 1 34* See Kits Below Plunger Nut 3 35* See Kit Below Copper Spacer 3 36* See Kits Below Plunger, 15mm (3030) 3 See Kits Below Plunger, 18mm (4020, 3025) 3 37* See Kits Below Copper Spacer 3 38* See Kits Below O-Ring Ø1.78 x 5.28 3 39* See Kits Below Teflon Ring 3 40* See Kits Below Plunger Rod 3 41 9.803-965.0 Connecting Rod Pin 3 42 9.
R www.karchercommercial.com Form # 9.807-623.0 • Revised 02/14 • Printed in U.S.A.
