Yamaha YZF-R125 Service Manual: Checking the engine oil level

Yamaha YZF-R125 Service Manual / Periodic checks and adjustments / Engine / 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 off.

3. Check:

Engine oil level

The engine oil level should be between the minimum level mark "a" and maximum level mark "b".

Below the minimum level mark → Add the recommended engine oil to the proper level.

NOTE:

Before checking the engine oil level, wait a few minutes until the oil has settled.
Do not screw the engine oil filler cap (dipstick) "1" in when checking the oil level.

Checking the engine oil level

CAUTION:

Engine oil also lubricates the clutch and the wrong oil types or additives could cause clutch slippage. Therefore, do not add any chemical additives or use engine oils with a grade of "CD" "c" or higher and do not use oils labeled "ENERGY CONSERVING II" "d".
Do not allow foreign materials to enter the crankcase.

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

5. Check the engine oil level again.

NOTE:

Before checking the engine oil level, wait a few minutes until the oil has settled.

Measuring the compression pressure

NOTE: Insufficient compression pressure will result in a loss of performance. 1. Measure: Valve clearance Out of specification →Adjust. Refer to "ADJUSTING THE VALVE CLEARANCE" on page ...

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 tu ...

Other materials:

Checking the fuel sender
1. Drain the fuel from the fuel tank. 2. Check: Fuel sender resistance Out of specification → Replace the fuel sender. a. Connect the pocket tester ( × 10) to the fuel sender coupler as shown. Positive tester probe sky blue "1" Negative tester probe orange/white " ...

Checking the switches
1. Clutch switch 2. Main switch 3. Front brake light switch 4. Sidestand switch 5. Rear brake light switch 6. Neutral switch 7. Turn signal switch 8. Horn switch 9. Dimmer switch 10.Pass switch 11.Engine stop switch 12.Start switch Check each switch for continuity with the pocket tes ...

Disassembling the water pump
1. Remove: Water pump seal "1" NOTE: Remove the water pump seal from the inside of the water pump housing "2". 2. Remove: Bearing "1" NOTE: Remove the bearing from the outside of the water pump housing "2". ...