1985-2000 Yamaha XT350 & TT350 Dual-Purpose Motorcycle Service & Repair Manual (P/N YM-01122)
388 Pages • 101.11 MB • Instant, Printable PDF
Yamaha Models Covered & Key Technical Specifications
Models: Yamaha XT350, Yamaha TT350
Sub-models / Variants: XT350N, XT350NC, XT350S, XT350SC, XT350T, XT350TC, XT350U, XT350UC, XT350W, XT350WC, XT350A, XT350AC, XT350B, XT350BC, XT350D, XT350DC, XT350E, XT350EC, XT350F, XT350FC, XT350G, XT350GC, XT350H, XT350HC, XT350J, XT350JC, XT350K, XT350KC, XT350L, XT350LC, XT350M, XT350MC, TT350S, TT350T
Model Years: 1985–2000
Serial Numbers: 1RG-000101 through JYA3NVCO-YA048494
Technical Data:
- Engine type: Air-cooled, 4-stroke, double-overhead cam, 4-valve
- Engine oil capacity (periodic change): 1,300 cc (1.37 qt.)
- Spark plug gap (XT350): 0.7–0.8 mm (0.028–0.032 in.)
- Spark plug gap (TT350): 0.6–0.7 mm (0.024–0.028 in.)
- Idle speed (XT350): 1,350–1,450 rpm
- Idle speed (TT350): 1,400–1,500 rpm
- Valve clearance (intake): 0.07–0.12 mm (0.003–0.005 in.)
- Valve clearance (exhaust): 0.13–0.17 mm (0.005–0.007 in.)
- Ignition timing: Fixed at 12° BTDC at 1,200 rpm; 34° BTDC at 5,000 rpm
- Engine drain bolt torque: 43 N·m (31 ft.-lb.)
Yamaha Manual Features & Content Preview
- Covers 1985–2000 Yamaha XT350 and 1986–1987 Yamaha TT350 dual-purpose motorcycles, including all N through M model-year sub-variants
- Third-party publication: Clymer Manuals, PN YM-01122, Primedia Business Directories & Media, © 2000 edition
- Contains 101 exploded-view diagrams and 14 detailed electrical wiring schematics
- 388 pages of technical documentation for your shop
- Instant download — the PDF file link appears in your order confirmation immediately
- Fully searchable OCR text layer lets you jump straight to a specific torque spec or diagnostic table
- Provides the definitive assembly data and repair reference for the 350cc four-valve engine series, documenting final-year production refinements
Factory Maintenance and Technical Specifications
This manual delivers extensive documentation for the air-cooled, 4-stroke, DOHC, 4-valve engine powering the XT350 and TT350 series. Inside, workshop documentation is logically structured. It outlines the precise procedural workflows needed for servicing the engine top end, clutch assemblies, kickstarter mechanisms, and transmission gear sets. Coverage extends to fuel, exhaust, and emission control systems, including specific adjustments for California-compliant sub-models. Maintenance schedules and periodic lubrication protocols are explicitly outlined. This ensures mechanics utilize the correct SAE 20W40 or 10W30 engine oil grades for optimal performance. Please remember that working on motorcycles involves inherent risks. Always ensure your motorcycle is safely secured on a stand and verify procedures with a certified mechanic before servicing your machine to prevent injury or equipment damage.
System Data and Reference Values
Having exact numbers on hand saves time on the bench. Comprehensive data tables document engine compression pressure requirements between 9–12 kg/cm² (128–171 psi). When checking the top end, you will find the intake valve clearance listed at 0.07–0.12 mm. Engine drain bolt torque is specified at 43 N·m (31 ft.-lb.), while cylinder head bolt torque values are documented in a crucial multi-stage sequence. The ignition timing is fixed at 12° BTDC at 1,200 rpm and 34° BTDC at 5,000 rpm. Detailed charts also provide vital reference data for tire inflation, battery state of charge, and torque specifications for standard fasteners. This precise documentation serves as a reliable repair companion for the full production range of these dual-purpose motorcycles.
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