Checking The Transmission Oil Level; Changing The Transmission Oil - Yamaha YZ125 2009 Owner's Service Manual

CHECKING THE TRANSMISSION OIL
LEVEL
1. Start the engine, warm it up for several min-
utes and wait for five minutes.
2. Place the machine on a level place and hold
it up on upright position by placing the suit-
able stand under the engine.
3. Check:
• Transmission oil level
Transmission oil level checking steps:
a. Remove the oil check bolt "1".
b. Inspect the oil level.
Be sure the machine is positioned straight up
when inspecting the oil level.
Never attempt to remove the oil check bolt
just after high speed operation. The heated
oil could spout out, causing danger. Wait
until the oil cools down.
Oil flows out → Oil level is correct.
Oil does not flow out → Oil level is low. Add
transmission oil until oil flows out.
Recommended oil:
Yamalube 4 (SAE10W-40) or
SAE10W-40 type SE motor oil
c. Inspect the gasket (oil check bolt), replace if
damaged.
d. Tighten the oil check bolt.
Oil check bolt:
10 Nm (1.0 m•kg, 7.2 ft•lb)

CHANGING THE TRANSMISSION OIL

1. Start the engine and warm it up for several
minutes and wait for five minute.
2. Place the machine on a level place and hold
it on upright position by placing the suitable
stand under the engine.
3. Place a suitable container under the engine.
4. Remove:
• Oil drain bolt "1"
• Oil filler cap "2"
Drain the transmission oil.
5. Install:
• Aluminum washer
• Oil drain bolt "1"
Oil drain bolt:
20 Nm (2.0 m•kg, 14 ft•lb)
3-11
ENGINE