Complete workshop & service manual with electrical wiring diagrams for Buell XB9R Firebolt 2003 Motorcycle. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

This Buell XB9R Firebolt 2003 Motorbike service & repair manual (including maintenance, overhaul, disassembling & assembling, adjustment, tune-up, operation, inspecting, diagnostic & troubleshooting…) is divided into different sections. Each section covers a specific component or system with detailed illustrations. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. The printer-ready PDF documents work like a charm on all kinds of devices.

EXCERPT:
CARBURETOR
GENERAL
See Figure 4-1. Buell motorcycles use a constant-velocity, gravity-fed carburetor. This carburetor features a float-operated inlet valve, a variable venturi, a throttle stop screw (for idle speed adjustment) and a fuel enrichment system (for starting).
Idle and transfer ports provide a balanced fuel mixture during the transition period from stop to mid-range. A vacuum piston controls venturi opening.
The carburetor is specifically designed to control exhaust emissions. All jets are fixed. The idle mixture has been preset at the factory. The idle mixture screw is recessed in the
carburetor casting. The opening is sealed with a plug because it is intended that the idle mixture be non-adjustable.
NOTE
Adjusting mixture setting by procedures other than specified in this section may be in violation of Federal or State regulations.
This system partially compensates for changes in the mixture that are normally caused by changes in altitude. Because atmospheric pressures drop as altitude increases, the pressure difference in the upper and lower chambers is reduced; this results in less fuel being delivered to the engine, thereby maintaining the correct air/fuel ratio for better engine performance and reduced exhaust emissions.
The carburetor has a drain for emptying the float chamber during seasonal or extended periods of storage.
The carburetor is equipped with an accelerator pump. The accelerator pump system uses sudden throttle openings (rapid accelerations) to quickly inject raw fuel into the carburetor venturi; this provides extra fuel for smooth acceleration.
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