Honda Elsinore CR125, MT125, MR125, CR250, CR250R, MR250, MT250 Repair Manual 1973-1980

• Honda Elsinore CR125M, 1974-1978
• Honda Elsinore CR125R, 1979-1980



• Honda Elsinore CR250M, 1974-1976
• Honda Elsinore CR250R, 1978-1980



• Honda Elsinore MR175, 1974-1977
• Honda Elsinore MR250, 1975-1976



• Honda Elsinore MT125, 1973-1976
• Honda Elsinore MT250, 1973-1976

POOR PERFORMANCE

Poor engine performance can be caused by any number of things related to carburetion, ignition, and the condition of the sliding and rotating components in the engine.

In addition, components such as brakes, clutch, and transmission can cause problems that seem to be related to engine performance, even when the engine is in top running condition.

POOR IDLING

Idling that is erratic, too high, or too low is most often caused by incorrect adjustment of the carburetor idle circuit. Also, a dirty air filter or an obstructed fuel tank vent can affect idle speed.

Incorrect ignition timing or worn or faulty ignition components are also possibilities.

First, make sure the air filter is clean and correctly installed. Then, adjust the throttle cable free play, the throttle stop screw, and the idle mixture air screw (Figure 6) as described in the routine maintenance chapter.

If idling is still poor, check the carburetor and manifold mounts for leaks; with the engine warming up and running, spray WD-40 or a similar light lube around the flanges and joints of the carburetor and manifold (Figure 7). Listen for changes in engine speed.

If a leak is present, the idle speed will drop as the lube "plugs" the leak and then pick up again as it is drawn into the engine.

Tighten the nuts and clamps and test again. If a leak persists, check for a damaged gasket or a pinhole in the manifold. Minor leaks in manifold hoses can be repaired with silicone sealer, but if cracks or holes are extensive, the manifold should be replaced.

Operating principles and service and repair procedures for the ignition, charging and lighting systems are covered in this chapter. Table 1 and Table 2 are at the end of the chapter.

CAPACITOR DISCHARGE IGNITION SYSTEM (CDI)

The capacitor discharge ignition system is used on the following models:

1. CR125M



2. CR125R



3. CR250M (1975-1976 optional)



4. CR250R
These models are equipped with a fully transistorized ignition system consisting of an ignition coil, a CDI unit and a spark plug.

• General Information
• Troubleshooting
• Lubrication, Maintenance and Tune-up
• Engine
• Clutch and External Gearshift Linkage
• Transmission and Internal Shift Mechanism
• Fuel and Emission Systems
• Exhaust System
• Electrical System
• Wheels, Tires and Drive Chain
• Front Suspension and Steering
• Rear Suspension
• Brakes
• Body and Frame
• Wiring Diagrams