2011 Yamaha TT-R125LW(M) Service Manual (446 P.)
Valve clearance, carburetor tuning, and drive chain adjustment for the Yamaha TT-R125LW(M) off-road bike. Engine, transmission, and chassis service procedures included.
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Sample pages from the 2011 Yamaha TT-R125LW(M) Service Manual (446 P.) manual
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Yamaha Models Covered & Key Technical Specifications
Models: Yamaha TT-R125LW(M)
Trade Names: TT-R125LW, TT-R125LWM, TT-R125LWMC
Build Years: 2011
Technical Data:
- Engine displacement: 123.7 cm³
- Engine type: Air-cooled 4-stroke, SOHC
- Bore × stroke: 54.0 × 54.0 mm
- Compression ratio: 10.0:1
- Transmission: 5-speed constant-mesh
- Starter: Kickstarter
- Front brake: Single disc
- Rear brake: Drum
Yamaha Manual Features & Content Preview
2011 Yamaha TT-R125LW(M) Technical Overview
- Covers 2011 Yamaha TT-R125LW(M) minibikes, including TT-R125LWM, TT-R125LWMC, and TT-R125LW variants.
- Official OEM publication P/N 5HP-28199-81.
- Contains technical diagrams for engine assembly, chassis components, and wiring harness routing.
- Accessible from your device as soon as the order is placed.
- Laid out for standard letter and A4 printing.
- This 446-page manual provides the factory-authorized specifications and maintenance intervals for the TT-R125LW(M) series engine and chassis.
Contents Summary
The documentation begins with a general information segment providing a machine identification guide, preparation instructions for disassembly, and an explanation of the manual format. Subsequent sections focus on technical specifications for engine components, chassis adjustments, and electrical system values. The manual details maintenance intervals and provides comprehensive tables for tightening torques, fluid capacities, and wear limits for internal parts such as the cylinder head, camshaft, valve train, clutch, and transmission.
Engine and Chassis Specifications
Engine data includes bore and stroke dimensions of 54.0 × 54.0 mm with a 10.0:1 compression ratio. Cylinder head warp limits are documented at 0.03 mm. Intake valve clearance is specified at 0.08–0.12 mm, while exhaust valve clearance is set to 0.10–0.14 mm in the specification table. Crankshaft runout limit is documented at 0.03 mm. Fork oil capacity for the chassis is listed at 156 cm³. Fuel tank capacity totals 6.6 liters including a 1.9-liter reserve. For those performing regular service, see what an OEM service publication covers to understand the full scope of factory-level documentation. Reference only — always consult a certified technician before performing service on this equipment.
This 446-page official Yamaha OEM manual documents the 2011 Yamaha TT-R125LW(M), providing engine, chassis, electrical, and maintenance specifications for the 5HP4 and 5HP5 model variants.
Document Reference: 5HP-28199-81
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