Yamaha XMAX YP125R - Service manual > Changing the engine oil

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

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

3. Remove:

• Engine oil filler cap "1"
• Engine oil drain bolt "2" (along with the gasket)

4. Drain:

• Engine oil (completely from the crankcase)

5. If the oil strainer is also to be cleaned, perform the following procedure.

a. Remove the oil strainer cover "1" and oil strainer "2".

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

c. Install the oil strainer cover.

Oil strainer cover 32 Nm (3.2 m*kgf, 23 ft*lbf)

6. Install:

• Engine oil drain bolt (along with the gasket )

Engine oil drain bolt 20 Nm (2.0 m*kgf, 14 ft*lbf)

7. Fill:

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

Engine oil quantity

Total amount 1.50 L (1.59 US qt, 1.32 Imp.qt)

Periodic oil change 1.30 L (1.37 US qt, 1.14 Imp.qt)

8. Install:

• Engine oil filler cap

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

10.Check:

• Engine (for engine oil leaks)

11.Check:

• Engine oil level

12.Check:

• Engine oil pressure

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

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 and the oil pump for damage or leakage. Refer to "OIL PUMP (YP250R)"

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

e. Tighten the oil check bolt to specification.

Oil check bolt 7 Nm (0.7 m*kgf, 5.1 ft*lbf)

13.Reset:

• Oil change indicator

a. Set the main switch to "ON".

b. Push the "OIL CHANGE" button "1" for 15 to 20 seconds.

c. Release the button and the oil change indicator will go off.

TIP

If the engine oil is changed before the oil change indicator comes on (i.e., before the periodic oil change interval has been reached), the oil change indicator must be reset as soon as possible so that it comes on for the next periodic oil change.

Changing the final transmission oil

1. Stand the vehicle on a level surface.

TIP

• Place the vehicle on the centerstand.
• Make sure that the vehicle is upright.

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

3. Place a container under the final transmission.

4. Remove:

• Oil filler cap "1"
• O-ring "2"

5. Remove:

• Final transmission oil drain bolt "1" Completely drain the final transmission oil.

6. Install:

• Final transmission oil drain bolt (along with the gasket )

Final transmission oil drain bolt 22 Nm (2.2 m*kgf, 16 ft*lbf)

7. Fill:

• Final transmission oil (specified amount of the recommended final transmission oil)

Final transmission oil

Type SAE 10W-30 type SE motor oil

Quantity 0.25 L (0.26 US qt, 0.22 Imp.qt)

8. Install:

• O-ring
• Oil filler cap

9. Start the engine, warm it up for several minutes, turn it off, and then check for oil leakage.

Replacing the air filter element

TIP

Check hoses are located on the bottom of the air filter case. If dust or water or both collects in a hose, remove the clamp from the hose, and then remove the plug to drain the hose.

1. Remove:

• Air filter case cover "1"
• Air filter element

2. Check:

• Air filter element

Damage → Replace.

TIP

• Replace the air filter element every 20000 km of operation.
• The air filter needs more frequent service if you are riding in unusually wet or dusty areas.

3. Install:

• Air filter element
• Air filter case cover

NOTICE

Never operate the engine without the air filter element installed. Unfiltered air will cause rapid wear of engine parts and may damage the engine. Operating the engine without the air filter element will also affect the throttle body tuning, leading to poor engine performance and possible overheating.

TIP

When installing the air filter element into the air filter case cover, make sure that the sealing surfaces are aligned to prevent any air leaks.

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