Yamaha YZF-R125 Service Manual: Changing the engine oil

1. Remove:

  • Right bottom cowling
  • Right upper side cowling
  • Right lower side cowling Refer to "GENERAL CHASSIS" on page 4-1.

2. Start the engine, warm it up for several minutes, and then turn it off.

3. Place a container under the engine oil drain bolt.

4. Install:

  • Engine oil drain attachment "1" (Located under the rider seat with the owner's tool kit)

Changing the engine oil


5. Remove:

  • Engine oil filler cap (dipstick) "1"
  • Engine oil drain plug "2"
  • O-ring "3"
  • Spring "4"
  • Engine oil strainer "5"

Changing the engine oil


Changing the engine oil


6. Drain:

  • Engine oil (completely from the crankcase)

7. If the oil filter element is also to be replaced, perform the following procedure.

a. Remove the oil filter element cover "1" and oil filter element "2".

b. Install the new O-ring "3".


c. Install the new oil filter element and the oil filter element cover.


8. Check:

  • Engine oil strainer Dirt Clean.

9. Install:

  • Engine oil strainer
  • Spring
  • O-ring

  • Engine oil drain plug 

10.Fill:

  • Crankcase (with the specified amount of the recommended engine oil)


11.Install:

  • Engine oil filler cap

12.Start the engine, warm it up for several minutes, and then turn it off.

13.Check:

  • Engine (for engine oil leaks)

14.Check:

  • Engine oil level Refer to "CHECKING THE ENGINE OIL LEVEL" on page 3-10.

15.Check:

  • Engine oil pressure

a. Slightly loosen the oil check bolt "1".

Changing the engine oil


b. Start the engine and keep it idling until engine oil starts to seep from the oil check bolt. If no engine oil comes out after one minute, turn the engine off so that it will not seize.

c. Check the engine oil passages, the oil filter element and the oil pump for damage or leakage.

Refer to "OIL PUMP" on page 5-47.

d. Start the engine after solving the problem(s) and check the engine oil pressure again.

e. Tighten the oil check bolt to specification.


16.Install:

  • Right lower side cowling
  • Right upper side cowling
  • Right bottom side cowling Refer to "GENERAL CHASSIS" on page 4-1.
    Checking the engine oil level
    1. Stand the vehicle on a level surface. NOTE: Place the vehicle on a suitable stand. Make sure the vehicle is upright. 2. Start the engine, warm it up for several minutes, and then turn it ...

    Adjusting the clutch cable free play
    1. Check: Clutch cable free play "a" Out of specification Adjust. 2. Adjust: Clutch cable free play a. Pull back the rubber cover "1" b. Loosen the locknut "2". c. Turn the adjust ...

    Other materials:

    Lubrication diagrams
    Clutch push lever Main axle Drive axle Crankshaft Oil filter Oil pump assembly Oil strainer To cylinder head Camshaft Crankshaft Main axle Drive axle ...

    Installing the front brake master cylinder
    1. Install: Brake master cylinder "1" Brake master cylinder holder "2" NOTE: Install the brake master cylinder holder with the arrow mark "a" pointing forward. Align the end of the brake master cylinder holder with the punch mark "b" on the handlebar. First, tighten the front bo ...

    Troubleshooting
    Any of the following fail to light: turn signal lights, brake light or indicator lights. The horn fails to sound. The fuel gauge fails to operate. The speedometer fails to operate. NOTE: Before troubleshooting, remove the following part(s): 1. Seats 2. Fuel tank 3. Left upper ...

    2023 Copyright www.yam-r125.net |