To the Owner: Thank you for purchasing a NorthStar hot water pressure washer. Your machine is designed for long life, dependability, and the top performance you demand! Take time now to read through this manual so you will better understand the machine’s operation, maintenance and safety precautions. Everyone who operates this machine must read and understand this manual. The time you take now will prolong your machine’s life and prepare you for its safe operation. Enjoy the exceptional performance of your NorthStar hot water pressure washer, the industry leader! The manufacturer reserves the right to make improvements in design and/or changes in specifications at any time without incurring any obligation to install them on units previously sold. Quick Facts Pump Oil Pump is shipped with oil. Change oil plug and check pump oil level before starting. Use Universal Tractor Transmission Oil (UTTO) or Mobil1 Synthetic15w50 for Comet pumps and Cat pump oil (item# 22158) for Cat oil changes. Water Make sure your water flow is 20% higher than the pressure washer’s flow rate. Make sure your water is clean and particle free. Storage Do not allow water to freeze in the pump, hose, coil, or spray gun. Spraying Chemicals Use any NorthStar brand or equivalent pressure washer chemicals. Maintenance Schedule Pump Oil: change after first 50 hours, then every 3 months or 500 hours. Read and understand all manuals before operating. Any Questions, Comments, Problems or Parts Orders NorthStar Product Support 1-800-270-0810 Table of Contents Important Safety Instructions 2 Safety Features 13 Grounding Instructions 3 Maintenance Instructions 13-17 Extension Cords 3 Moving and Handling Instructions 18 Specifications 4 Long Term Storage 18 Machine Component Identification 5 Troubleshooting 19 Installation Instructions 6-9 Parts Breakdowns 20-22 Operation Instructions 10-12 Wiring Diagram 23-25 Limited Warranty 26 Important Safety Instructions WARNING -Risk of Injection or Injury to Persons - Do Not Direct Discharge Stream at Persons - Do not use a hose if exterior damage is evident. -Risk of explosion - Do not spray flammable liquids - Do not operate in a flammable environment. CAUTION -Risk of Asphyxiation - Exhaust fumes are deadly. For outdoor use only. Avoid inhaling exhaust fumes. -Risk of fire. Do not add fuel when the product is operating or hot. -Gun kicks back. Hold with both hands. -To reduce the risk of injury, read operating instructions carefully before use. WARNING - When using this product basic precautions should always be followed, including the following: 1.) Read all the instructions before using the product. 2.) To reduce the risk of injury, close supervision is necessary when the product is used near children. Do not allow irresponsible use by children. Always stop the product and bleed pressures before leaving unattended, disconnecting hoses, or servicing the pump. 3.) Know how to stop the product and bleed pressures quickly. Be thoroughly familiar with the controls. 4.) Stay alert - watch what you are doing. 5.) Do not operate the product when fatigued or under the influence of alcohol or drugs. Never smoke while operating or fueling this machine. 6.) Keep operating area clear of all persons. 7.) Do not overreach or stand on unstable support. Keep good footing and balance at all times. Wear footwear capable of maintaining a good grip on wet surfaces - Do not place the machine on soft or unstable ground. 8.) Follow the maintenance instructions specified in all manuals. Do not run machine without sufficient lubrication or sufficient water to cool the pump. 9.) Wear safety glasses, gloves, face protection and appropriate clothing when operating the machine. 10.) Do not operate this machine with broken or missing parts - Never alter the manufacturer’s original design or deactivate any safety device on the machine. 11.) Risk of exposure to dangerous chemicals. Wear protective gloves when handling and cleaning with chemicals. Follow the chemical manufacturer’s directions. Understand all safety hazards and first aid for all chemicals being used. Check whether dangerous chemicals have been used and take any precautions that may have been recommended by the supplier of these chemicals when cleaning filters. Do not pump highly abrasive fluids or use with incompatible chemicals or solvents. 12.) Know the pressure and temperature limits of your machine. Be sure all high pressure accessories meet or exceed your machine’s limits. Do not set the pressure relief valve above the machine’s limit. 13.) Do not move this machine by pulling on the hose. Do not use the pump to support other items of equipment that impose unacceptable loads on the pump. Do not attempt to use this machine as a prop. 14.)To reduce risk of injury, do not secure the spray gun open. Your spray gun is equipped with a built-in trigger safety latch to guard against accidental trigger release and potentially dangerous high pressure spray. Rotate the safety ...