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Introduction Welcome to N.P.S. Company, LLC's (NPS) Owner's Guide (Guide) for the NPS Generator Models Y4500 and Y5500U (Generator). These Generators are designed with your comfort and ease in mind. NPS is proud to provide these Generators to enhance your experience in the outdoors and the wild places of this planet.
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A. Safety Throughout this Guide, you will see several warnings repeated to alert the Generator owner or operator to existing and potential hazards. These warnings are in place to ensure the safety of the Generator owner or operator. Safety is of utmost importance and failure to follow the procedures as set forth in this Guide could result in performance failure of the Generator and severe bodily injury or death to the owner or operator.
A. Safety PROHIBITION A.5 Do not attempt to service or repair Generator: • Unless you are mechanically knowledgeable and experienced or are being supervised by a qualified technician • When physically tired or mentally weary • If alcohol has been consumed within previous twenty-four (24) hour period •...
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A. Safety HAZARD ALERT A.7 Gasoline is flammable and explosive: • Keep multi-class ABC fire extinguisher(s) within reach and readily available throughout the service or maintenance process • Do not smoke or permit others to smoke at or near repair or maintenance location •...
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A. Safety A.11 Failure to follow the service and maintenance procedures as set forth in this Owner's Guide may void NPS' Limited Warranty and result in death or extreme bodily harm to owner or operator A.12 Do not operate Generator in an enclosed space such as a garage or storage stall A.13 Ensure RV is equipped with working CO detector A.14 Verify CO and smoke detector(s) are functioning properly while the Generator is operating...
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A. Safety DANGER A.20 Generator Voltage Arc Flash and Electrical Shock Hazard: Prior to working on live electrical equipment: • Disconnect shore power to RV • Disconnect negative (-) terminal battery or batteries • Remove any metal or conductive apparel. Articles of jewelry and clothing such as metal: watch bands, bracelets, rings, keychains, necklaces, ear or other metal piercings, metalized aprons, cloth with conductive thread, or metal headgear shall not be worn.
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Getting to know your Generator B.1 NPS Generator Models Y4500 and Y5500U are designed with the following features and benefits: • Partnered with and Powered by Yamaha • NPS' Yamaha-backed Limited Warranty • Pure sine wave inverter technology providing clean, safe and stable power •...
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B. Getting to know your Generator (continued) • Pre-Start Check and Inspection • Starting and Operating the Generator • Maintenance Requirements • Trouble Shooting • NPS' Limited Warranty • Specifications • Maintenance Record Page 9 of 39 Rev 1.8...
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Exhibit 1 - NPS Generator Generator Service Access Door (closed position) Generator Service Access Door Latches Generator Casing Warning Tags Generator Model Number Generator Warning Label Base Generator Nameplate Warning Labels NPS' TEI United States and Canada Certification Mark Page 10 of 39 Rev 1.8...
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C. Generator Components Located within Service Access Door Generator Components Located within Service Access Door See Exhibit 2 • Fault Indicator Lights • Carburetor Fuel Drain • Carburetor • Hand-held Remote-Start Keyfob (NPS original transport location) • Automatic Engine Choke •...
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C. Generator Components Located within Service Access Door Control Panel See Exhibit 2 • Start/Stop Prime Switch • Oil Alert fault indicator light • Overload Alarm fault indicator light • Locater arrows for the 30amp AC Circuit Breaker Warning Labels are located on and around the Generator to alert the Owner to location specific hazards associated with operating, servicing and maintaining the Generator.
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Exhibit 2 - Generator Components Located within Service Access Door Engine Carburetor Hand-held Generator Service Air Filter Fault Remote-Start Automatic Access Door Housing Indicator Keyfob Engine Choke Opening Lights (NPS original Emergency Carburetor transport location) Pull Start Handle Fuel Drain Warning Labels Warning...
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Exhibit 3 - Generator Exhaust Assembly Bottom of RV Exhaust Support Strap Exhaust Pipe Clamp and Bolts RV Service and Maintenance Access Door Warning Label Exhaust Pipe Exhaust Support Strap Clamp Bolts Baffle End of Exhaust Pipe Exhaust Pipe Spark Arrester and Debris Screen Page 14 of 39 Rev 1.8...
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Exhibit 4 - Generator Base Rubber Isolation Strip Front of Generator Generator Service Access Door Air Outflow (arrows indicate outflow direction) Exhaust Assembly Muffler and Port Purge Line Fuel Line Rubber Isolation Strip Air Intake (arrows indicate direction of airflow) Page 15 of 39 Rev 1.8...
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Exhibit 5 - Generator Fuel Line and Vapor Purge Line Vapor Purge Line Fuel Line (Capped at Factory) 12 Volt Ground Electrical Harness Connecting Generator to RV Page 16 of 39 Rev 1.8...
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D. Pre-Start Check and Inspection Battery and Battery Connections Verify there is sufficient battery voltage. Ensure all battery connections are clean of any acid build-up and battery cable nuts are securely fastened. Locate, Open and Secure the RV Generator Compartment Door Locate, Open and Remove Generator Service Access Door and set aside while performing remainder of Pre-Start Check and Inspection Oil Level...
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D. Pre-Start Check and Inspection Exhaust Assembly including Debris Screen See Exhibit 2 • Verify debris screen is intact • Verify Support Strap is secure • Verify Pipe Assembly is connected Check Engine Air Filter Housing and Element • Unlatch the Air Filter Housing cover •...
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E. Starting and Operating the Generator Before Starting or Operating the Generator, familiarize yourself with the safety information set forth in the "A. Safety" portion of this Guide. DANGER: Engine Exhaust Gasoline-powered engines and tools present a serious health hazard. They produce high concentrations of carbon monoxide (CO).
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E. Starting and Operating the Generator Wireless Hand-held Remote-Start Keyfob was created to conveniently allow you to start/stop your Generator from a distance of fifty (50) meters (164'). See Exhibit 6 • To start the Generator, press and hold the "START" button for more than one (1) second and then release the button •...
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Exhibit 6 - Generator Start Options Hand-held Remote Start/Stop Keyfob Remote Start/Stop Switch inside RV Start Indicator Stop Button Light Start Button Stop Prime Remote Control Start/Stop Switch Module inside Generator Emergency Pull Start Service Access Signal Match Handle inside Generator Door Indicator Light Indicator...
Fuel. See Yamaha MZ360 Owners Manual, at page 22 • The Generator requires unleaded gasoline with a minimum Octane of 87 or higher Oil. See Yamaha MZ360 Owners Manual, at pages 23, 24, 32 and 36 • NPS recommends YAMALUBE 10W-40 •...
G. Troubleshooting Generator will not start: Generator does not crank • Inspect battery voltage and connection to ensure adequate voltage and secure connections o if you have a low battery or poor connections, Generator will not turn over • Inspect the Master 12Volt Power "ON/OFF" Switch and verify it is in the "ON" position. See Exhibit 2 o if battery voltage is adequate and Master 12Volt Power Switch is in the "ON"...
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G. Troubleshooting There are two Fault Indicator Lights on the Generator Control Panel: Overload Alarm Light and Oil Alert Light. See Exhibit 2 Exhibit 6 • Overload Alarm Light blinks rapidly when the Generator is less than five percent (5%) overloaded o Generator will continue running and outputting electricity •...
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G. Troubleshooting Hand-held Remote-Start Keyfob is not working • Verify the problem is not with the Generator by starting the Generator using another starting option o If Generator will start from another starting option but Hand-held Remote Start Keyfob still will not start or stop the Generator, then the Keyfob signal may be the problem •...
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Exhibit 7 - AC Power and Fuel Connectors Fuel Vapor Purge Line (capped at factory and to remain capped in motorized applications) Rubber Grommet For Wiring Harness Fuel Line DC Power Battery Liquid-tight Conduit Connection 12Volt Ground Liquid-tight Conduit Connector at Generator Output Leads Liquid-tight Conduit...
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Exhibit 9 - Wiring Harness - Remote Start Panel Connections Top of Remote LCI One Control Start Panel System (orange jumper) (front) Bottom of Remote Start Wiring Remote Start Harness lock-clip Panel (back side) (orange and brown wires) Generator Hours Meter lock-clip (green and white wires, pre-installed on Remote...
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Exhibit 10 - Wiring Harness Connectors DC Power (12Volt red Female-end Positive (+) Connector Battery Connection) Female-end Connector (wire color and Battery Ground placement) (brown wire) Stop (green wire) Start Light Start Battery (red wire) (orange wire) (blue wire) Generator Service Warning DC Power Access Door (open)
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Exhibit 11 - Wiring Harness - Connections at Generator Rubber Grommet Rubber for Wiring Grommet Harness Generator with Wiring Harness (outside Service threaded (inside Generator) Access Generator) Door (open) Wiring Harness to Remote Start Panel Black female-end Connector to Remote Start Panel Wiring Harness DC Power (fully connected...
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H. NPS Warranty NPS offers full support for service, warranty and technical assistance through www.NPSrvpower.com or 1-866-407-1727 during normal business hours (9:00 am - 5:00pm MST) if assistance is requested outside normal business hours, leave a message or send an email and a team member will assist you as soon as possible.
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9.7 HP (7.1 kW) @ 3,600 RPM Net Power Output: 10.4 HP (7.6 kW) @ 3,600 RPM Net Max Power: 18.07 Net Torque: lbs.-ft @ 2,500 RPM Compression Ratio: 8.1-1 Carburetor: Side Draft KY POS Non-contact Transistor Ignition (T.C.I.) Ignition System: Auto Choke: Electronic Wireless Remote, Wired Remote, Recoil and Electronic, 12V, 3...
Maintenance Record Record all maintenance and service performed. See "F. Maintenance Requirements." DATE HOUR METER MAINTENANCE OR SERVICE PERFORMED READING Page 34 of 39 Rev 1.8...
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Record the coordinating Date of Maintenance Record above including Name, Address, and Phone Number of your Service Dealer or NPS Technician NAME ADDRESS / PHONE DATE Page 35 of 39 Rev 1.8...
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