2011 Yamaha TT-R125LW(M) Service Manual (P/N 5HP-28199-81)

This 446-page official Yamaha OEM PDF manual (P/N 5HP-28199-81) delivers the complete factory-authorized specifications, fluid capacities, and wear limits for the 2011 Yamaha TT-R125LW(M) minibike series. Whether you are doing routine maintenance or checking tolerances on the workbench, this reference provides the exact numbers the factory technicians use. Having sequential tear-down steps and correct assembly orders directly at your workstation prevents costly reassembly errors and optimizes turnaround times during any repair.

Key Features & Delivery

• Covers TT-R125LWM, TT-R125LWMC, and TT-R125LW models (including 5HP4 and 5HP5 variants).
• Includes detailed wiring diagrams, exploded diagrams, cable routing diagrams, sectional views, and job instruction charts for engine assembly, chassis components, and wiring harness routing.
• Outlines comprehensive teardown and assembly procedures for the carburetor, oil pump, kick axle, shift shaft, CDI magneto, balancer, shift cam, and shift forks.
• Details complete servicing parameters for the front wheel, rear wheel, front brake, rear drum brake, front fork, steering system, swingarm, rear shock absorber, and ignition coil.

Maintenance & Internal Specifications The guide outlines critical maintenance intervals and features comprehensive tables for tightening torques. You will find precise wear limits for vital internal parts like the cylinder head, camshaft, valve train, clutch, and transmission.

To save you an expensive trip to the dealership, the manual provides step-by-step instructions for complex mechanical work. It covers essential procedures such as brake system air bleeding, complete carburetor disassembly, valve clearance inspection and adjustment, and front fork overhauls to ensure your next repair meets factory standards.

Essential Engine and Chassis Specifications include:

• Bore and stroke: 54.0 × 54.0 mm
• Compression ratio: 10.0:1
• Intake valve clearance: 0.08–0.12 mm
• Exhaust valve clearance: 0.10–0.14 mm
• Cylinder head warp and crankshaft runout limits are both strictly documented at 0.03 mm.
• Fork oil capacity: 156 cm³
• Fuel tank capacity: 6.6 liters (includes a 1.9-liter reserve).

Working on motorcycle engines requires precision and care. Keep in mind that these specifications are provided for reference, and you should ensure you have the proper mechanical skills or consult a certified technician before tearing down your equipment to maintain safety and optimal performance.