Table of Contents
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Chapters
Table of Contents
Troubleshooting
Related Manuals for Yamaha UMX
Summarization of Contents
General Information
Identification
Details the locations of serial numbers for the vehicle, engine, traction motor, and control unit.
Safety Precautions
Outlines essential safety procedures, including lockout, capacitor discharge, and jacking points.
Important Information
Covers preparation for disassembly, replacement parts, gaskets, oil seals, lock washers, circlips, and rubber parts.
Basic Service Information
Details electrical system handling, component care, and connection procedures.
Special Tools
Lists special tools required for maintenance and assembly, with part numbers and reference pages.
Specifications
General Specifications
Lists dimensions, weights, and performance data for the YUM1A, YUM2A, and YUM2E models.
Engine Specifications (YUM1A/YUM2A)
Details engine type, displacement, compression, fuel, oil, spark plug, and internal component specifications.
Chassis Specifications
Outlines chassis details including tire size, pressure, steering, brakes, and suspension types.
Drive Train Specifications (YUM1A/YUM2A)
Specifies details for the primary/secondary sheave and transmission, including gear ratios and oil types.
Drive Train Specifications (YUM2E)
Lists specifications for the transmission and traction motor of the YUM2E model.
Electrical Specifications (YUM1A/YUM2A)
Provides voltage, ignition, coil, battery, lighting, starter generator, and sensor specifications.
Tightening Torques
Specifies general and component-specific tightening torques for safe and proper assembly.
Cable Routing
Illustrates the correct routing of wiring harnesses, fuel hoses, and brake cables for different models.
Periodic Checks and Adjustments
Periodic Maintenance Charts (YUM1A/YUM2A)
Provides a chart outlining daily, monthly, 6-month, annual, and 4-year maintenance tasks.
Periodic Maintenance Charts (YUM2E)
Outlines the maintenance schedule for the YUM2E model, specifying checks, adjustments, and replacements.
Pre-Operation Checks
Covers essential checks before operating the vehicle, including engine oil, fuel, battery, and brakes.
Monthly Checks
Details checks and maintenance tasks to be performed monthly, such as drive belt and shift lever inspection.
6-Month Checks
Outlines maintenance procedures for every 6 months, including air filter, spark plug, and wire harness checks.
Annual Checks
Covers maintenance tasks to be performed annually, such as engine oil changes and throttle cable adjustments.
4-Year Checks
Details maintenance tasks required every four years, including starter generator brushes and valve clearance checks.
Chassis
General Chassis (1)
Details the removal and installation of seats.
General Chassis (2)
Explains the removal of the cargo bed and its disassembly.
General Chassis (3)
Covers the removal of rear and inner covers, as well as mudguards.
General Chassis (4)
Describes the removal of front and side panels.
General Chassis (5)
Details the removal of the floor mat and instrument panel assembly.
General Chassis (6)
Covers the removal of the dashboard and installation of the steering wheel.
General Chassis (7)
Details the removal of the front grille and front fender.
Front and Rear Wheels
Explains the removal and checking of front and rear wheels, hubs, and bearings.
Front and Rear Brakes
Covers the removal and checking of front and rear brake components.
Pedal Assembly
Details the removal and disassembly of the pedal assembly, including accelerator and brake pedals.
Steering System
Covers steering system removal, checking, and lubrication.
Front Suspension Components
Removing the Front Suspension
Provides an exploded view and parts list for removing the front suspension assembly.
Removing the Front Under Bracket
Details the removal procedure for the front under bracket.
Checking the Front Lower Arms
Explains how to check front lower arms for play and wear.
Checking the Front Shock Absorber Assemblies
Covers checks for oil leaks, rod bends, and spring fatigue in the front shock absorbers.
Checking the Steering Knuckles
Details how to check steering knuckles for cracks, damage, and play.
Installing the Front Lower Arms and Front Shock Absorber Assemblies
Provides instructions for installing the front lower arms and shock absorber assemblies.
Rear Suspension Components
Removing the Rear Suspension
Provides an exploded view and parts list for removing the rear suspension assembly.
Checking the Rear Shock Absorber Assemblies
Details checks for oil leaks, rod bends, and spring fatigue in rear shock absorbers.
Checking the Rear Suspension Arm
Outlines checks for bends, cracks, damage, and bushing wear on the rear suspension arm.
Checking the Connecting Rod and Stabilizer
Covers checks for bends, cracks, damage, and bushing wear on the connecting rod and stabilizer.
Installing the Connecting Rod
Provides instructions for installing the connecting rod.
Engine (YUM1A/YUM2A)
Engine Inspection
Details procedures for measuring compression pressure and checking valve clearance.
Engine Removal (1)
Explains the removal of the muffler and exhaust pipe.
Engine Removal (2)
Covers disconnecting couplers and leads, and removing the engine.
Cylinder Head and Rocker Arms
Details removal, checking, and installation of the cylinder head and rocker arms.
Valves and Valve Springs
Covers removal, checking, and installation of valves and valve springs.
Starter Generator
Details removal, disassembly, checking, and assembly of the starter generator.
Flywheel
Covers removal and installation of the flywheel.
Camshaft
Details removal, checking, and installation of the camshaft and related components.
Crankshaft and Piston
Covers removal, checking, and installation of the crankshaft and piston assembly.
Fuel System (YUM1A/YUM2A)
Fuel Tank
Details removal and installation of the fuel tank and pump, along with fuel pressure checks.
Air Filter Case
Covers the removal of the air filter case.
Throttle Body
Details removal, checking, and installation of the throttle body and intake manifold.
Drive Train
Primary and Secondary Sheave (YUM1A/YUM2A)
Details removal, disassembly, checking, and assembly of the primary and secondary sheaves.
Transmission (YUM1A/YUM2A)
Covers removal, disassembly, checking, assembly, and shift cable installation for the transmission.
Transmission (YUM2E)
Details removal and disassembly of the transmission for the YUM2E model.
Traction Motor (YUM2E)
Covers disassembly and assembly of the traction motor for the YUM2E model.
Electrical System
Ignition System (YUM1A/YUM2A)
Details the ignition system circuit diagram and troubleshooting.
Electric Starting System (YUM1A/YUM2A)
Covers the electric starting system circuit diagram and troubleshooting.
Charging System (YUM1A/YUM2A)
Details the charging system circuit diagram and troubleshooting.
Charging System (YUM2E)
Provides the circuit diagram and troubleshooting for the YUM2E charging system.
Lighting System (YUM1A/YUM2A)
Covers the lighting system circuit diagram and troubleshooting.
Lighting System (YUM2E)
Details the lighting system circuit diagram and troubleshooting for the YUM2E model.
Signaling System (YUM1A/YUM2A)
Covers the signaling system circuit diagram and troubleshooting.
Signaling System (YUM2E)
Details the signaling system circuit diagram and troubleshooting for the YUM2E model.
Fuel Injection System (YUM1A/YUM2A)
Covers the fuel injection system circuit diagram and reading error codes.
Fuel Pump System (YUM1A/YUM2A)
Details the fuel pump system circuit diagram and troubleshooting.
Drive System (YUM2E)
Provides the circuit diagram and troubleshooting for the YUM2E drive system.
Electrical Components (YUM1A/YUM2A)
Lists and details electrical components for YUM1A/YUM2A, including switches, fuses, and battery checks.
Electrical Components (YUM2E)
Details electrical components for YUM2E, including switches, fuses, battery charging, and relays.
Troubleshooting
Troubleshooting (YUM1A/YUM2A)
Lists common starting, engine, fuel system, electrical, and chassis-related troubleshooting items.
Diagnostic/Error Code Identification Chart (YUM1A/YUM2A)
Identifies diagnostic and error codes for YUM1A/YUM2A, with descriptions, symptoms, and possible causes.
Troubleshooting (YUM2E)
Covers troubleshooting for YUM2E, including poor performance, braking, lighting, and MCU issues.
PC Genius Diagnostic System (YUM2E)
Details the PC Genius diagnostic system, its connection, diagnostic modes, and troubleshooting procedures.
PC Genius Golf Car Programming System (YUM2E)
Explains the PC Genius Golf Car Programming System and its modes.
Wiring Diagram
YUM1A/YUM2A Wiring Diagram
Shows the complete wiring diagram for YUM1A and YUM2A models.
YUM2E Wiring Diagram
Displays the complete wiring diagram for the YUM2E model.
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