Part of the Yanmar Operator Manuals.
All 107 pages of this Yanmar LB446H operation manual pdf (OEM #1-9900300-00) focus on one thing: keeping your floodlight projector running safely and reliably on the job site. You get complete electrical diagrams detailing starter switch operations, a full troubleshooting guide for stubborn mast and lamp failures, and clear maintenance intervals for the engine. Open up the file to find detailed exploded views and precise generator grounding instructions that walk you through proper setup, daily operation, and long-term storage. Lock down your M8x1.25 bolts to exactly 25.5 N-m and verify your ground rod resistor reads 10 ohms or less before firing up the unit. Don't let a dead light tower halt your night shift. Grab this bookmarked download, open it on your phone, and get your site illuminated tonight.
Complete the set for your LB446H
- Repair Manual: Yanmar LB446H Service Manual (incl. Wiring)
Other edition of this manual
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 5 | |
| Safety Information | 6 | |
| Safety | 9-10 | |
| Basic Precautions | 11-12 | Operation and Maintenance Manual, Proper Clothing and Safety Items, Alcohol, Fuel and Oil Ignition Sources |
| Operating Precautions | 13-17 | Precautions Before Starting the Engine, Precautions Starting the Engine, Working and Parking, Precautions for Transportation, Precautions for Electric Shock, Short Circuit |
| Precautions for Servicing | 18-19 | Appropriate Tools, Unauthorized Persons, Fueling and Oiling, Lamp Handling, Battery Cable Disconnection, Waste Processing |
| Location of Warning Labels | 20-23 | Warning Labels and Location |
| Specifications | 24 | |
| Floodlight Projector | 25 | Rated Voltage, Lamp Type, Total Luminous Flux, Mast Type, Dimensions, Mass |
| Generator | 26-28 | Generator Type, Rated Output, Engine Model, Fuel Oil, Lube Oil, Electrical Equipment |
| Floodlight Projector | 31-43 | Product Overview, Loading Generator, Replacing Lamp, Operating Each Part |
| Generator | 44-68 | Product Overview, Grounding, Installation, Operation Instructions |
| Floodlight Projector | 71-73 | Periodic Checks, Maintenance and Storage, Unclear Points or Problems |
| Generator | 74-82 | Precautions for Inspection, List of Periodic Inspections, Periodic Inspection Items |
| Troubleshooting | 83-84 | Lamp Issues, Mast Issues, Engine Issues, Electrical System Issues |
| Floodlight Projector | 85 | Lamp Does Not Light, Light Goes Out or Blinks, Lamp Only Lights for a Short Time, Mast Cannot Be Raised, Mast Keeps on Coming Down, The Mast Cannot Be Lowered |
| Generator | 86-88 | Engine Does Not Start, Turning on Starter Motor Does Not Start Engine, Engine Stops, Engine Speed Stays Low, Engine Speed Is Abnormal, Engine Stops While Running |
| Electrical Diagram | 89-92 | Color Coding, Starter Switch Operation Diagram, Diode, Safety Relay, Regulator, Solenoid |
| Ordering Replacement Parts and Service Call | 93-96 | Model Designation, Machine Serial Number, Hourmeter Reading, Nameplate, Serial Number Plate |
| Notes and Maintenance Log | 97-105 | Maintenance Log |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Tightening torque for M6×1.0 bolts | 10.8±1.0 N·m (1.1±0.1 kgf·m) | p. 75 |
| Tightening torque for M8×1.25 bolts | 25.5±2.9 N·m (2.6±0.3 kgf·m) | p. 75 |
| Lamp type | Metal Halide Lamp Type S M400 SC/BU | p. 25 |
| Lamp part number | 1-3010006-10 | p. 35 |
| Ground rod resistor | 10 Ω or less | p. 41 |
| Rated voltage | 130 V | p. 25 |
| Rated output | 1.7 kVA | p. 25 |
| Lamp cool-down time before restarting | 20 minutes | p. 42 |
| Maximum ambient temperature for operation | 40°C | p. 85 |
| Floodlight Projector Rated Voltage | 130 V | p. 25 |
| Floodlight Projector Total Luminous Flux | 160000 lm | p. 25 |
| Floodlight Projector Mass | 246 kg | p. 25 |
