Yamaha XT225N / XT225NC Serow 225 1996-2006 Supplementary Service Repair Manual

• Covers the 1996–2006 Yamaha XT225N and XT225NC Serow 225 models
• Official Yamaha publication P/N LIT-11616-14-42, first edition October 2000
• Contains 12 detailed wiring schematics and 14 exploded-view diagrams across the complete 427-page volume
• Provides essential factory baseline data for the 223cc air-cooled engine platform

Component and System Documentation

This official OEM workshop manual provides a structured summary of the XT225 series maintenance parameters for the long-running Serow 225. The opening chapters define vehicle identification via VIN and engine serial numbers before transitioning directly into comprehensive specification tables. These charts meticulously catalog the 223cc single-cylinder powerplant. Expect detailed listings covering SOHC valve timing, camshaft runout limits, and precise piston-to-cylinder clearance thresholds.

Beyond the engine block, the manual documents extensive chassis and electrical specifications. Coverage spans front fork oil weight requirements, brake fluid standards, and proper steering head bearing assembly. The electrical section breaks down internal circuit descriptions, bulb wattage, and switch continuity verification methods. You will find a complete repository for factory-recommended lubrication points, torque values for internal fasteners, and detailed cable routing diagrams for both handlebar and frame-mounted wiring.

Technical Specification Highlights

This reference guide documents critical mechanical clearances necessary for accurate field maintenance. Cylinder head bolt torque values are listed at 10 Nm for crankcase assembly, while the intake valve clearance sits tight at 0.05–0.09 mm. The primary engine data table specifies a spark plug gap of 0.6–0.7 mm. Throttle cable free play is established at 3–5 mm for proper operation, and the float height for the MIKUNI BST34 carburetor is documented at 11.5 mm below the vacuum chamber line. Always cross-reference these parameters with the complete OEM documentation and ensure you observe standard shop safety protocols before initiating any hands-on maintenance.