Honda CB100, XL125, CB125, XL250, XL175, CT125, SL100, SL125, XL100, TL125, CL100, TL250 Repair Manual 1969-1982

The 1969-1982 Honda 100-350cc OHC Singles DIY repair manual by Clymer, covers the following models:

• Honda CB100
• Honda CB125S
• Honda CL100
• Honda CT125
• Honda SL100
• Honda SL125
• Honda TL125
• Honda TL250
• Honda XL100
• Honda XL125
• Honda XL175
• Honda XL250
• Honda XL350

Book Excerpt: 1969-1982 Honda Singles CB100, XL125, CB125, XL250, XL175, CT125, SL100, SL125, XL100, TL125, CL100, TL250 Repair Manual CYLINDER HEAD COVER AND CAMSHAFT (1976-ON)

The cylinder head cover carries the rocker arm assemblies. The camshaft is held in place between the cylinder head cover and the cylinder head and is driven through a chain from the sprocket on the crankshaft. The cam can be removed with the engine in the frame, but it is easier to do with the engine removed. REMOVAL CAUTION: To prevent any warpage and damage, remove the cylinder head cover and cam only when the engine is at room temperature.

1. Place a wood block(s) under the engine to support the bike securely.
2. Remove the side covers and the seat.
3. Remove the fuel tank as described in Chapter Seven.

NOTE: Prior to removing the contact breaker point base plate on models so equipped, make a mark on the base plate that aligns with the centerline of one of the mounting screws. That way the ignition timing will be correct upon installation (providing the timing was correct before removal).

BRAKES

The front brake on the 1973-1978 CB125S is a mechanical type disc brake; the rear is a drum type. On all other models, both the front and the rear brake are drum type. Figure 1 illustrates the major components of the drum brake assembly. Activating the brake hand lever or foot pedal pulls the cable or rod which in turn rotates the camshaft. This forces the brake shoes out into contact with the brake drum. Lever and pedal free play must be maintained on both brakes to minimize braking effectiveness. Refer to Chapter Three for complete adjustment procedures. The front brake cable must be inspected and replaced periodically, as it will stretch with use until the cable can no longer be properly adjusted. Table 1 and Table 2 are at the end of this chapter.

Subject: 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982 Honda 100-350cc OHC Singles service, maintenance, repair. ISBN-10: 0892871849 | ISBN-13: 9780892871841 | Clymer M315