2008 Yamaha YP400X Majesty Service Manual

Diagnostic procedures and component service for the YP400X Majesty maxi scooter, covering fuel system, chassis, engine, and electrical systems. Ref: LIT-11616-21-34.

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Technical Safety Notice
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This official OEM document is intended for professional technicians and skilled operators. Performing service on mechanical equipment involves inherent risks. By purchasing, you acknowledge that RepairLoader provides original manufacturer data for informational purposes. Always prioritize safety: use correct tools, wear protective gear, and consult a certified professional if you are uncertain of any procedure.

Yamaha Models Covered & Key Technical Specifications

Models: YP400X Majesty
Sub-models / Variants: 5RUT
Trade Names: Majesty
Build Years: 2008–2012
Technical Data:

  • Engine type: Liquid cooled 4-stroke, DOHC
  • Displacement: 395.0 cm³
  • Bore x stroke: 83.0 x 73.0 mm
  • Compression ratio: 10.60:1
  • Engine idling speed: 1300–1500 r/min
  • Starter motor power: 0.65 kW
  • Cooling system capacity: 1.57 liters
  • Fuel tank capacity: 14.0 liters
  • Battery: 12 V, 8.0 Ah
  • Primary reduction ratio: 31/14 (2.214)
  • Secondary reduction ratio: 42/16 (2.625)
  • Front brake type: Single disc brake
  • Rear brake type: Single disc brake
Technical Specifications
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Document Number / Seller:
26551 / Mark Harris
File Size:
11.98 MB
File Type:
ZIP
Language:
English
Printable:
Yes
Category:
Maxi Scooter
Last updated / verified
Apr 9, 2026

Yamaha Manual Features & Content Preview

Technical Scope of the 2008 Yamaha YP400X Majesty Manual

  • Covers 2008–2012 Yamaha YP400X Majesty maxi scooter variants, including the 5RUT model configuration with liquid-cooled 4-stroke DOHC engine
  • Official Yamaha publication P/N LIT-11616-21-34, first edition May 2007
  • Documents key diagnostic data across 100 pages, including 25 tightening torque tables and specific cable routing diagrams for FI system components
  • File delivered as a direct download the moment payment clears
  • Indexed PDF search covers every chapter and appendix
  • Stored against your account so you can retrieve it after a hard-drive loss
  • This 2007 first edition serves as the foundational reference for the YP400X Majesty series, providing all baseline factory settings for fuel injection and cooling systems

Operational Documentation

This 2008 Yamaha YP400X Majesty service manual documents the technical requirements for the maintenance of the 395cc liquid-cooled powertrain and associated chassis components. The documentation spans general information, detailed engine specifications, and system-specific data for the fuel injection assembly and cooling system. Service technicians and owners will find extensive information regarding the periodic maintenance schedules, encompassing everything from cooling system capacities to V-belt replacement intervals and electrical system diagnostic values.

Reference Data and Technical Specifications

Engine assembly data is detailed through comprehensive tightening torque charts for components ranging from cylinder head covers to transmission assemblies. Intake vacuum is documented at 36.0–42.0 kPa in the idle conditions table. Valve clearance for the intake is listed at 0.15–0.20 mm in the cylinder head specification table. The coolant system capacity for the YP400X Majesty is documented at 1.57 liters. Factory workshop documentation is structured to support precise maintenance of the cooling system components and electrical starting circuits. Note: This page is a contents overview for the manual. It does not provide repair or diagnostic instructions. An official 100-page Yamaha OEM workshop manual covering the 2008–2012 YP400X Majesty, documenting engine, chassis, electrical, and fuel-injection specifications for the 5RUT-series build.

Manual FAQ, Purchase & Download Details

What specifications are the **essential** testing parameters for engine idling? keyboard_arrow_down

1300–1500 r/min is the specified engine idling speed parameter for the Yamaha YP400X Majesty.

Check the **correct** procedure for adjusting front brake pad wear. keyboard_arrow_down

Wear indicator groove almost disappeared on the front brake pad requires replacement of the brake pads as a set.

What does the **documented** fluid capacity requirement state for the coolant reservoir? keyboard_arrow_down

0.32 L (0.34 US qt) (0.28 Imp.qt) is the coolant reservoir capacity for the Yamaha YP400X Majesty.

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