JASO T 903 standard
The JASO T 903 standard is an index for engine
oils for 4-stroke motorcycle engines.
There are two classes: MA and MB.
Oil conforming to the standard is labeled on the
oil container. For example, the following label
shows the MA classification.
(1) code number of the sales company of the oil
(2) oil classification
Checking & Adding Oil
(1) transmission oil filler cap (3) sealing washer
(2) oil check bolt
1. Run the engine for 3 minutes, then shut it off.
2. Wait 3 minutes after shutting off the engine to
allow the oil to properly distribute itself in the
clutch and transmission.
3. Support the CRF in an upright position on a
level surface.
4. Remove the transmission oil filler cap (1), oil
check bolt (2) and sealing washer (3) from the
right crankcase cover. A small amount of oil
should flow out of the oil check bolt hole.
Allow any excess oil to flow out of the oil
check bolt hole.
If no oil flows out of the oil check bolt hole,
add oil slowly through the transmission oil
filler hole until oil start to flow out of the oil
check bolt hole.
Tighten the oil check bolt with a new sealing
washer and transmission oil filler cap. Repeat
step 1–4.
5. After inspection the oil level or adding oil,
tighten the oil check bolt to the specified
torque:.
Oil Check Bolt:
7 lbf·ft (10 N·m, 1.0 kgf·m)
6. Install the transmission oil filler cap securely.
Replacing Transmission Oil
1. Run the engine for 3 minutes, then shut it off.
2. Support the CRF in an upright position on a
level surface.
3. Remove the transmission oil filler cap (1)
from the right crankcase cover.
4. Place an oil drain pan under the engine to
catch the oil. Then remove the transmission
oil drain bolt (2) and sealing washer (3).
5. After the oil has drained, tighten the
transmission oil drain bolt with a new sealing
washer to the specified torque:
16 lbf·ft (22 N·m, 2.2 kgf·m)
6. Fill the crankcase with recommended oil.
Capacity:
0.71 US qt (0.67R) at oil change
7. Check the transmission oil level by following
the steps in
Checking & Adding Oil (this
page).
Transmission Oil
To Next Page
Loading...
Need help?
General
