Yamaha YZ250(W)/W1 Owner's Service Manual page 162

TRANSMISSION OIL REPLACEMENT
3. Check:
9 Transmission oil level
Transmission oil level checking steps:
9 Remove the oil check bolt 1.
9 Inspect the oil level.
NOTE:
Be sure the machine is positioned straight
up when inspecting the oil level.
w
Never attempt to remove the oil check bolt
just after high speed operation. The heat-
ed 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.
Recommended oil:
Yamalube 4 (10W-30) or SAE
10W-30 type SE motor oil
9 Inspect the gasket (oil check bolt), replace if
damaged.
9 Tighten the oil check bolt.
Oil check bolt:
10 Nm (1.0 m•kg, 7.2 ft•lb)
EC35K002
TRANSMISSION OIL REPLACEMENT
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.
3-13
INSP
ADJ
Add transmission
oil until oil flows
out.