1983-1986 Yamaha YTM200EK / YTM225DXK Service Manual
Covers YTM200EK, YTM225DXK models with procedures for engine, chassis, electrical, and carburetor systems. Includes specific torque values
Yamaha Models Covered & Key Technical Specifications
Models: YTM200K, YTM200N, YTM225K, YTM225S
Sub-models / Variants: YTM200EK, YTM225DXK, Tri-Moto
Trade Names: Tri-Moto
Model Years: 1983–1986
Serial Numbers: YTM200EK 24W-000101
Technical Data:
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Engine displacement: 196 cc (YTM200) / 223 cc (YTM225)
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Engine idle speed: 1,400 ± 50 r/min
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Spark plug gap: 0.6–0.7 mm
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Intake valve clearance (cold): 0.05–0.09 mm
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Exhaust valve clearance (cold): 0.11–0.15 mm
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Compression pressure (sea level): 883 kPa (Standard), 785 kPa (Min), 981 kPa (Max)
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Engine oil capacity (periodic change): 1.5 liters
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Final gear oil capacity: 0.13 liters
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Recommended oil: Yamalube 4-cycle or SAE 20W40 SE motor oil
Yamaha Manual Features & Content Preview
Yamaha YTM200 & YTM225 Tri-Moto Official Service Manual (1983–1986)
Equip your shop with the definitive factory resource for Yamaha Tri-Moto maintenance. This official 100-page Yamaha publication (P/N LIT-11616-05-33 / YM-04062) provides the exact factory-authorized procedures required to service all 1983–1986 YTM200K-N and YTM225K-S models, including both shaft-drive variants and air-cooled 4-stroke engine configurations.
Essential Shop Features:
- Instant digital download: Secure the manual immediately upon order placement and get straight to work.
- Fully searchable PDF: A built-in OCR text layer allows you to instantly jump to specific torque specs or procedures by keyword.
- Shop-floor ready: Print individual sections or torque tables to keep your device clean while wrenching.
- Permanent access: Re-download your file at any time with no expiration.
Mechanical Coverage & Precision Data
Precision matters in the shop. This manual details the complete teardown and rebuild process for the Tri-Moto line without skipping steps. Expect comprehensive chapters covering cylinder head service, piston and crankshaft removal, and secondary clutch rebuilding. For long-term drivetrain reliability, the text clearly maps out vital procedures like carburetor tuning, air cleaner maintenance, and precise shaft-drive gear lash measurement.
You get exact reference data right where you need it. The manual documents 39 technical torque specification tables, including the 50 Nm cylinder head bolt specification and the 43 Nm drain plug torque. Engine performance baselines are clearly defined, listing the standard 883 kPa compression pressure alongside precise valve clearances: 0.05–0.09 mm for the intake and 0.11–0.15 mm for the exhaust.
Electrical system diagnostics are also fully covered. The guide details essential 12V charging system requirements and specific stator resistance ranges to help you troubleshoot ignition issues quickly.
Mechanics know that accurate specifications are critical for safe and reliable vehicle operation. Always rely on the complete original OEM documentation provided in this manual as your authoritative source before beginning any hands-on mechanical work, maintenance, or parts replacement.
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