Complete workshop service manual with electrical wiring diagrams for 1983-1985 Honda CB550 & CB650 Motorcycle. It's the same service manual used by dealers that guaranteed to be fully functional and intact without any missing page.

This 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:

FUEL AND EXHAUST SYSTEMS
The fuel system consists of the fuel tank, shutoff valve, 4 Keihin constant velocity carburetors and the air filter.
The exhaust system consists of 4 exhaust pipes, a common collector and 2 mufflers.
The air filter must be cleaned frequently; the specific procedures and service intervals are covered in Chapter Three.
This chapter includes service procedures for all pans of the fuel and exhaust systems. Carburetor specifications arc listed in Table 1. Table 1 and Table 2 are at the end of this chapter.
The carburetors on all U.S. models are engineered to meet stringent EPA (Environmental Protection Agency) regulations. The carburetors are How tested and preset at the factory for maximum performance and efficiency within EPA regulations. Altering preset carburetor jet needle and pilot screw adjustments is forbidden by law. Failure to comply with EPA regulations may result in heavy fines.
CARBURETOR OPERATION
An understanding of the function of each of the carburetor components and their relation to one another is a valuable aid for pinpointing a source of carburetor trouble.
The carburetor’s purpose is to supply and atomize fuel and mix it in correct proportions with air drawn through the air intake. At the primary throttle opening (idle), a small amount of fuel is siphoned through the pilot jet by the incoming air. As the throttle is opened further, the air stream begins to siphon fuel through the main jet and needle jet. The tapered needle increases the effective flow capacity of the needle jet; as it is lifted, it occupies less of the area of the jet.
At full throttle the carburetor venturi is fully open and the needle is lifted far enough to permit the main jet to flow at full capacity.
The choke circuit is a “bystarter” system in which the choke lever opens a valve rather than closing a butterfly in the venturi area as on many carburetors. In the open position, the slow jet discharges a stream of fuel into the carburetor venturi, enriching the mixture when the engine is cold.
CARBURETOR SERVICE
Carburetor service (removal and cleaning) should be performed when poor engine performance or hesitation is observed. If, after servicing the carburetors and making the adjustments described in this chapter, the motorcycle does not perform correctly (and assuming other factors affecting performance are correct, such as ignition timing and condition, etc.), the motorcycle should be checked by a dealer or a qualified performance tuning specialist.
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