This comprehensive John Deere Service Repair Technical Manual (TM2368) is specifically designed for the 4730 and 4830 Self-Propelled Sprayers. It provides detailed instructions and high-quality illustrations to guide you through troubleshooting and repair procedures for a wide range of components. The manual covers critical areas such as the engine, fuel and air intake systems, cooling systems, electrical system, powertrain, steering and brakes, suspension and tread adjust mechanisms, hydraulic systems, solution spray system, foam marker system, operator station, and boom repair. Inside you will find in-depth information on safety procedures, fuel and lubricant specifications, engine component removal and installation, diesel fuel system operation, air intake system maintenance, engine cooling system repair, battery management, charging and starting circuits, switch and relay troubleshooting, monitoring systems and sensors, engine control system diagnostics, lighting systems, convenience components, wiring harness routing, boom trac pro system operation, hydrostatic drive repair, planetary hub repair, steering column maintenance, steering valve operation, AutoTrac steering system settings, steering cylinder repair, service brake adjustments, park brake systems, suspension components, tread adjust valves and cylinders, hydraulic pump and valve repair, boom hydraulic cylinder maintenance, hydraulic oil cooler servicing, hydraulic reservoir management, accumulator repair, retractable ladder operation, nozzle repair, solution tank servicing, solution pump maintenance, solution control valves, rinse tank operation, eductor repair, flowmeter calibration, foam marker system repair, on-board air system maintenance, operator station component removal and installation, controls, air conditioning system repair, heating system maintenance, air suspension seat adjustments, cab door and windshield replacement, and boom repair procedures. This manual is intended for professional mechanics and knowledgeable users who are familiar with complex machinery repair. Please note that this manual focuses solely on repair procedures; separate diagnostic manuals with electrical wiring diagrams are available for purchase.