2011-2013 Yamaha Raptor 90 YFM90RB Owner's Manual (P/N LIT-11626-25-15, first edition)

• Covers 2011–2013 Yamaha Raptor 90 YFM90RB ATVs (built on the 43D-series platform)
• Details the 88cc air-cooled four-stroke engine and integrated speed limiter systems
• Official OEM publication P/N LIT-11626-25-15, first edition dated July 2011
• Contains 51 pages of operation, safety, and essential maintenance data
• Includes 8 comprehensive fluid, torque, and spark plug specification tables

Operation and Maintenance Overview

This original OEM guide gives technicians and owners a complete breakdown of instrument and control functions. You get precise factory documentation on the main switch, handlebar controls, and the dual speed limiter system. It outlines exact starting procedures for both cold and warm engines, specifically covering carburetor choke operation and the electric start mechanisms. Routine pre-ride inspection checklists detail fuel level standards, oil verification, and brake system integrity to ensure the ATV is ready for the trail. You will also find maintenance schedules mapping out battery care, spark plug inspection, and servicing for both the left and right air box elements. Always ensure that any mechanical setup or repair is verified by a certified technician prior to riding, as proper maintenance directly impacts rider safety and vehicle reliability.

Specifications and Technical Data

Need exact torque numbers for a routine service? This reference outlines the critical specifications directly from Yamaha to keep guesswork out of the workshop. The engine oil drain bolt torque is listed at 8 Nm (5.8 ft-lbf) in the lubrication section. For the final transmission, the oil capacity sits at 0.30 liters, requiring a drain bolt torque of 15 Nm (10.8 ft-lbf). You will also find ignition system details, including the required NGK/CR7HSA spark plug gap set between 0.6 and 0.7 mm (0.024–0.028 in). Additionally, the manual clearly documents how factory-recommended maintenance intervals must shift based on environmental conditions and usage severity, giving you a solid baseline for long-term upkeep.