OPERATOR’S MANUAL MODEL # HD 3.0/27 G HD3.0/27 GB HD 3.5/35 G HD 3.5/35 GB HD 4.0/40 G HD 4.0/40 GB HD 4.0/40 Ge HD 4.0/40 GeB HD 5/30 G HD 3.5/35 G CAL HD 3.5/35 GB CAL HD 4.0/40 G CAL HD 4.0/40 GB CAL HD 4.0/40 GeB CAL HD 4.0/40 Ge CAL ORDER # 1.107-270.0 1.107-271.0 1.107-272.0 1.107-273.0 1.107-274.0 1.107-275.0 1.107-276.0 1.107-277.0 1.107-412.0 1.107-421.0 1.107-422.0 1.107-429.0 1.107-430.0 1.107-434.0 1.107-435.0 Karcher North America, 6398 N Kärcher Way, Aurora, CO 80019 9.801-759.
CONTENTS Important Safety Information.................................................................4-6 Component Identification.......................................................................... 7 Assembly Instructions............................................................................... 8 Operating Instructions.........................................................................9-10 Detergent and General Operating Techniques.......................................
PRESSURE WASHER OPERATOR’S MANUAL INTRODUCTION & IMPORTANT SAFETY INFORMATION Thank you for purchasing this Pressure Washer. We reserve the right to make changes at any time without incurring any obligation. WARNING 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.
c. with no source of ignition within 10 feet of the dispensing point; and d. with an allowance made for expansion of the fuel should the equipment be exposed to a higher ambient temperature. In an overfilling situation, additional precautions are necessary to ensure that the situation is handled in a safe manner. 8. When in use , do not place machine near flammable objects as the engine is hot. 9. Do not store or use gasoline near this machine. WARNING RISK OF INJURY.
PRESSURE WASHER OPERATOR’S MANUAL IMPORTANT SAFETY INFORMATION 20. Never run pump dry or leave spray gun closed longer than 1-2 minutes. 21. Machines with shut-off spray gun should not be operated with the spray gun in the off position for extensive periods of time as this may cause damage to the pump. 22. Protect discharge hose from vehicle traffic and sharp objects. Inspect condition of high pressure hose before using or bodily injury may result. 23.
PRESSURE WASHER COMPONENT IDENTIFICATION Pressure Nozzle Spray Gun Detergent Bucket (not included) OPERATOR’S MANUAL Straight Through Wand Trigger ENGINE Inlet Screen Unloader Hose Detergent Starter Grip High Pressure Hose Garden Hose (not included) Pump protector Detergent Injector Pump Pump Pump — Develops high pressure. Starter Grip — Used for starting the engine manually. Spray Gun — Controls the application of water and detergent onto cleaning surface with trigger device.
PRESSURE WASHER OPERATOR’S MANUAL ASSEMBLY INSTRUCTIONS Spray Gun/Wand Spray Gun Safety Latch Pressure Nozzle Wand Coupler Wand High Pressure Hose STEP 1: Attach the high pressure hose to the spray gun using teflon tape on hose threads. STEP 2: Attach wand to spray gun using teflon tape on wand threads. Discharge Nipple Pressure Nozzle Wand Coupler STEP 3: Pull spring-loaded collar of the wand coupler back to insert your choice of pressure nozzle.
Dipstick Oil Dipstick Oil Window STEP 2: Remove shipping cap and install oil dipstick. Check pump oil level by using dipstick or observe oil level in oil window (if equipped). Use 40 wt. non detergent oil. OPERATOR’S MANUAL 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.
OPERATOR’S MANUAL PRESSURE WASHER OPERATING INSTRUCTIONS On-Off Switch STEP 8: Turn the engine switch to "On" position. STEP 9: 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. CAUTION: Small engines may kick back. Do not hold pull starter grip tightly in hand.
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. High Pressure Hose Soap Nozzle Discharge Nipple Strainer Quick Coupler Detergent Injector STEP 2: Use detergent designed specifically for pressure washers. Household detergents could damage the pump. Prepare detergent solution as required by manufacturer. Fill a container with pressure washer detergent.
OPERATOR’S MANUAL PRESSURE WASHER 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. Pull trigger on spray gun and siphon water for one minute. STEP 2: Turn off the engine. Safety Latch Pump Water Inlet STEP 4: Press trigger to release water pressure. STEP 5: Disconnect the garden hose from the water inlet on the machine.
PROBLEM POSSIBLE CAUSE SOLUTION LOW OPERATING PRESSURE Insufficient water supply. Closed faucet. Inlet hose kinked Use larger garden hose; clean inlet water screen. Open faucet. Clogged inlet hose strainer Check plumbing system for leaks. Retape leaks with teflon tape. Faulty or mis-adjusted unloader valve Adjust unloader for proper pressure. Install repair kit when needed. Call local distributor. Worn packing in pump Call Dealer Customer Support.
PRESSURE WASHER Troubleshooting Guide TROUBLESHOOTING For Models: HD 3.0/27 G, HD 3.5/35 G, HD 4.0/40 G, HD 4.0/40Ge PROBLEM POSSIBLE CAUSE SOLUTION ENGINE OPERATES FOR 15 MINUTES THEN STOPS Not enough gas or engine oil Fill tank with gas. Check oil level. Vapor lock developed by heat of day Keep gas tank full to avoid vapor locking. Obstruction in fuel filter Clean or replace fuel filter. ENGINE LACKS POWER Dirty air filter Replace air filter.
For Models: HD 3.0/27 G, HD 3.5/35 G, HD 4.0/40 G, HD 4.0/40Ge 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.
PRESSURE WASHER Troubleshooting Guide TROUBLESHOOTING For Models: HD3.0/27 GB, HD 3.5/35 GB, HD 4.0/40 GB, HD 4.0/40 GeB, HD 5.0/30 GB PROBLEM POSSIBLE CAUSE SOLUTION LOW OPERATING PRESSURE 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.
PROBLEM POSSIBLE CAUSE SOLUTION WATER OR OIL LEAKING FROM BOTTOM OF PUMP A small amount of leaking is normal If excessive leaking occurs, call local distributor. PRESENCE OF Water sprayed at machine WATER IN PUMP OIL Change oil. Direct spray away from machine. High humidity in air Check and change oil twice as often. Piston packing worn. Oil seal worn. Call local distributor. Not enough gas or engine oil Fill tank with gas. Check oil level.
PRESSURE WASHER Troubleshooting Guide TROUBLESHOOTING For Models: HD3.0/27 GB, HD 3.3/35 GB, HD 4.0/40 GB, HD 4.0/40 GeB, HD 5.0/30 GB PROBLEM POSSIBLE CAUSE SOLUTION SPRAY WAND LEAKS Spray wand not properly attached Slide the spray wand into the gun. Turn the wand collar clockwise onto the spray gun threads until tight. Broken o-ring Call local distributor and order an o-ring. Pump is sucking air Check that hoses and fittings are air tight.
PRESSURE WASHER ACCESSORIES ASSEMBLY 3 5 2 OPERATOR’S MANUAL 4 10 1 6 7 9 5 8 ACCESSORIES ASSEMBLY PARTS LIST ITEM PART NO. DESCRIPTION QTY 1 8.916-740.0 Hose 3/8"X50 1 2 8.750-247.0 Gun, M407 3 8.783-039.0 8.783-040.0 1 Wand 30" Zinc Plated, Handle & Coupler (HD 3.0/27 G, HD 3.0/27 GB) 1 Wand 44" Zinc Plated, Handle & Coupler (HD 3.5/35 G, HD 4.0/40 G, HD 4.0/40Ge, HD 3.5/35 GB, HD 4.0/40 GB, HD 4.0/40 GeB) 1 4 Quick Connect Nozzle Kit (3.
Check pump oil and engine oil level before first use of your new pressure washer. Date Oil Changed Month/Day/Year Estimated Operating Hours Since Last Oil Change Date Oil Changed Month/Day/Year OPERATOR’S MANUAL PRESSURE WASHER OIL CHANGE RECORD 20 9.801-759.
Karcher North America, 6398 N Kärcher Way, Aurora, CO 80019 Form #9.801-759.0 • Printed in U.S.A.
