2021-2024 Yamaha Delight 125 LTS125-C Service Manual

Description

2021-2024 Yamaha Delight 125 LTS125-C Service Manual

This 2021-2024 Yamaha Delight 125 LTS125-C Service Manual is the workshop reference for the LTS125-C D’elight scooter. It covers scheduled maintenance, engine overhaul, V-belt automatic transmission, brakes, suspension, fuel injection, electrical troubleshooting and the onboard self-diagnostic system in a single document written for Yamaha dealers and qualified mechanics working on this model.

File Details

• Manual type: Service Manual (workshop / repair)
• Brand: Yamaha
• Model: LTS125-C D’elight
• Document number: B3Y-F8197-E0
• Edition: First edition, October 2020
• Publisher: Yamaha Motor Vietnam Co., Ltd.
• Language: English
• File format: PDF

Chapters Covered

• General Information – identification, special tools, symbol definitions
• General Specifications – engine, chassis, electrical, tightening torques, lubrication charts, cable routing
• Periodic Maintenance – maintenance charts, fuel line, spark plug, valve clearance, idle speed, exhaust, air filter, V-belt case filter, battery, brake checks, brake bleeding, wheels, tires, steering head, engine oil, final transmission oil, V-belt replacement, secondary sheave lubrication, cables, throttle, lights
• Chassis – general chassis panels, front wheel, rear wheel, front brake, rear brake, handlebar, front fork, steering head, rear shock absorber assembly
• Engine – compression test, engine removal, cylinder head, camshaft, valves and valve springs, cylinder and piston, V-belt automatic transmission, starter generator, oil pump, transmission, crankshaft
• Fuel System – fuel tank, fuel pump, fuel filter, fuel pressure, fuel injector, air filter case, throttle body, ISC unit cleaning and reset
• Electrical System – ignition, electric starting, Stop and Start System, charging, lighting, signaling, fuel pump circuits and troubleshooting
• Self-Diagnostic – DTC table, self-diagnostic function table, sensor and actuator diagnostic codes, event code table, individual DTC troubleshooting procedures
• Wiring Diagram – full LTS125-C 2021 schematic with colour code legend

Altogether the book walks a technician through the complete service life of the LTS125-C: from the periodic maintenance chart with its odometer-based intervals, through torque-value tables and clearance limits for the air-cooled 125 cm³ single, on to the dry centrifugal clutch, the V-belt automatic transmission, the hydraulic front disc brake and the drum rear brake, the telescopic front fork and unit-swing rear suspension, and finally the electronically controlled fuel injection system supervised by the SGCU.

What The Electrical And Diagnostic Sections Give You

The electrical half of the manual is where a lot of used LTS125-C work actually happens, and it is fully documented here. Separate circuit diagrams are provided for the ignition system, electric starting system, Stop and Start System, charging system, lighting system, signaling system and fuel pump system. Each one is backed by its own troubleshooting flow with step-by-step checks and the exact wire colours and connector references needed to trace a fault.

The self-diagnostic chapter goes deeper. It opens with a glossary covering MIL, DTC, pending DTC, FFD, driving cycle and OBD terminology, then provides the full DTC table, the self-diagnostic function table, sensor and actuator diagnostic code tables and an event code table. Individual troubleshooting sections are then given for P0030, P00D1/P2195, P0105, P0106, P0107/P0108, P0110, P0111, P0112/P0113, P0195, P0196, P0197/P0198, P0122/P0123, P0132, P0133, P0134, P0201, P0301, P0335, P0351, P0500, P0507, P0560/P0563, P0511, P0600, P0601, P0620, P062F and P1602. Each of those covers the item being flagged, the fail-safe behaviour of the system, and the exact procedure to isolate and confirm the cause.

Built Around The Real Service Jobs

The layout matches how the work is actually done. A job starts with the removal order from the relevant chapter, moves into the check, measurement or adjustment procedure with its wear limit or specification, and ends with the installation torque. For the deeper engine work, the cylinder head tightening sequence, valve clearance adjustment at TDC with the camshaft sprocket and A/C magneto alignment marks, camshaft lobe measurement, valve seat lapping, piston ring end gap and cylinder bore measurement, crankshaft runout and crank assembly width are all documented.

For the drivetrain, the V-belt automatic transmission chapter covers primary sheave, secondary sheave, clutch shoes, clutch housing, V-belt width and the special tools needed to compress the clutch spring and torque the sheave nuts. The front fork chapter covers the damper rod assembly, oil seal replacement with the fork seal driver, fork spring free length and the specified fork oil quantity and level. The brake chapters cover pad replacement, caliper disassembly with piston seal and dust seal, master cylinder kit, bleeding sequence and the brake disc deflection and thickness limits.

Special Tools And Specifications You Actually Use

The special tools list at the front tells you exactly which tool numbers Yamaha specifies for this model, including the tappet adjusting tool, Yamaha diagnostic tool USB and A/I variants, steering nut wrench, exhaust flange nut wrench, T-handle, fork seal driver weight and attachment, camshaft wrench, rotor holding tool, clutch spring holder, flywheel puller, crankcase separating tool, crankshaft installer set, slide hammer bolt, oil seal guide, jig (secondary sheave installer) and various valve and piston pin tools. The tightening torque tables at the back of the general specifications split engine and chassis torque values into clean, model-specific numbers with thread size, quantity and remarks.

Who This Service Manual Is For

Owners of a 2021 to 2024 Yamaha Delight 125 LTS125-C who do their own maintenance and repairs, independent scooter workshops, and technicians who need a reliable reference for this specific Vietnamese-market D’elight. It is the difference between guessing at a torque value or a valve clearance and reading it straight off the page.

Get Instant Access

IMAGES PREVIEW

Every procedure, specification and diagnostic flow in the 2021-2024 Yamaha Delight 125 LTS125-C Service Manual is available as an instant PDF download. No shipping, no waiting for a physical book, no postage costs. Open it on a laptop in the workshop, on a tablet on the bench, or print the pages you need for the job in front of you. Whether you are doing an oil and filter change, adjusting valve clearance, replacing the V-belt, bleeding the front brake or chasing a P0507 idle speed code, the procedure and the numbers are already in your hands.