Yamaha YZF-R125 Service Manual: Installing the camshaft and rocker arms

Yamaha YZF-R125 Service Manual / Engine / Camshaft / Installing the camshaft and rocker arms

1. Lubricate:

  • Rocker arms
  • Rocker arm shafts

2. Lubricate:

  • Camshaft

3. Install:

  • Camshaft "1"

NOTE:

Make sure that the camshaft projections "a" and hole "b" are positioned as shown in the illustration.

Installing the camshaft and rocker arms


4. Install:

  • Rocker arms
  • Rocker arm shafts "1"

NOTE:

  • Make sure that the cutout "a" in each rocker arm shaft is facing downward as shown in the illustration.
  • Make sure the rocker arm shafts (intake and exhaust) are completely pushed into the cylinder head.

Installing the camshaft and rocker arms


    Checking the rocker arms and rocker arm shafts
    The following procedure applies to all of the rocker arms and rocker arm shafts. 1. Check: Rocker arm Damage/wear Replace. 2. Check: Rocker arm shaft Blue discoloration/excessive wea ...

    Valves and valve springs
    ...

    Other materials:

    Checking the transmission
    1. Measure: Main axle runout (with a centering device and dial gauge "1") Out of specification Replace the main axle. 2. Measure: Drive axle runout (with a centering device and dial gauge "1") Out of specification Replace the drive axle. 3. Check: Transmiss ...

    Removing and installing the cowlings and panel
    Removing and installing the cowlings and panel Cowling A Cowling B Cowling C Cowling D Panel A The cowlings and panel shown need to be removed to perform some of the maintenance jobs described in this chapter. Refer to this section each time a cowling or panel needs to be ...

    Parking
    When parking, stop the engine, and then remove the key from the main switch. WARNING Since the engine and exhaust system can become very hot, park in a place where pedestrians or children are not likely to touch them and be burned. Do not park on a slope or on soft ground, ...

    2025 Copyright www.yam-r125.net |