Yamaha YZ426F(M)/LC Owner's Service Manual page 168

Temp.
-20 -10 0 10 20
10W/30
10W/40
20W/40
20W/50
-4 14 30 50 68
ENGINE OIL LEVEL INSPECTION
°C
30 40 50
86 104
122
°F
a
b
3 - 14
4. Inspect:
Oil level
Oil level should be between maximum
a and minimum b marks.
Oil level low → Add oil to proper level.
NOTE:
When inspecting the oil level, do not screw the
oil level gauge into the oil tank.
Insert the gauge lightly.
(For USA and CDN)
Recommended oil:
At 5 ˚C (40 ˚F) or higher Å
Yamalube 4 (20W40) or SAE
20W40 type SH motor oil
(Non-Friction modified)
At 15 ˚C (60 ˚F) or lower ı
Yamalube 4 (10W30) or SAE
10W30 type SH motor oil
(Non-Friction modified)
and/or
Yamalube 4-R (15W50)
(Non-Friction modified)
CAUTION:
Do not add any chemical additives.
Engine oil also lubricates the clutch and
additives could cause clutch slippage.
Do not allow foreign material to enter the
crankcase.
(Except for USA and CDN)
Recommended oil:
Refer to the following chart for
selection of oils which are suited
to the atmospheric temperatures.
Recommended engine oil classi-
fication:
API STANDARD:
API "SH" or higher grade
(Designed primarily for motor-
cycles)
CAUTION:
Do not add any chemical additives or use
oils with a grade of CD a or higher.
Do not use oils labeled "ENERGY CON-
SERVING II" b or higher. Engine oil also
lubricates the clutch and additives could
cause clutch slippage.
Do not allow foreign materials to enter the
crankcase.
INSP
ADJ