Yamaha 2004 YP400, Service Manual, Page: 101 / 417

3 - 22
CHK
ADJ
MEASURING THE COMPRESSION PRESSURE/
CHECKING THE ENGINE OIL LEVEL
8. Install:
• spark plug
9. Connect:
• spark plug cap
10.Install:
• storage box lower plate
Refer to “RIDER SEAT AND STORAGE
BOX”.
T
R
.
.
13 Nm (1.3 m · kg, 9.4 ft · lb)
EAS00070
CHECKING THE ENGINE OIL LEVEL
1. Stand the scooter on a level surface.
NOTE:
_
• Place the scooter on a suitable stand.
• Make sure the scooter is upright.
2. Start the engine, warm it up for several min-
utes, and then turn it off.
3. Check:
• engine oil level
Wipe the dipstick
1
clean, insert it into the
oil filler hole (without screwing it in), and
then remove it to check the 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.
CAUTION:
_
Do not allow foreign materials to enter the
crankcase.
Recommended oil
Refer to the chart for the engine
oil grade which is best suited
for certain atmospheric temper-
atures.
API standard
SE or higher grade
ACEA standard
G4 or G5
a
b
1
1
-20 -10 0 10 20 30 40 50 ˚C
SAE 10W-30
SAE 15W-40
SAE 20W-40
SAE 20W-50
SAE 10W-40