Page 12 of 72
EAU32220
Left view
CS50/CS50M
DESCRIPTION
2-1
2
1. Storage compartment (page 3-11)
2. Shock absorber assembly
3. Final transmission oil filler cap (page 6-7)
4. Adjusting nut (page 6-13)5. Final transmission oil drain bolt (page 6-7)
6. Kickstarter (page 3-10)
7. Air filter element (page 6-9)
8. Front brake pads (page 6-14)
5RW-F8199-E4.QXD 19/11/07 08:01 Página 12
Page 13 of 72
EAU32220
CS50Z
DESCRIPTION
2-2
2
1. Storage compartment (page 3-11)
2. Shock absorber assembly
3. Final transmission oil filler cap (page 6-7)
4. Adjusting nut (page 6-13)
5. Final transmission oil drain bolt (page 6-7)6. Kickstarter (page 3-10)
7. Air filter element (page 6-9)
8. Coolant level window (page 6-8)
9. Front brake pads (page 6-14)
5RW-F8199-E4.QXD 19/11/07 08:01 Página 13
Page 42 of 72

NOTE:
If a torque wrench is not available
when installing a spark plug, a good
estimate of the correct torque is
1/4~1/2 turn past finger tight. Howe-
ver, the spark plug should be tighte-
ned to the specified torque as soon
as possible.
EAU20061
Final transmission oil
The final transmission case must be
checked for oil leakage before each
ride. If any leakage is found, have a
Yamaha dealer check and repair the
scooter. In addition, the final trans-
mission oil must be changed as
follows at the intervals specified in the
periodic maintenance and lubrication
chart.
1. Start the engine, warm up the
final transmission oil by riding the
scooter for several minutes, and
then stop the engine.
2. Place the scooter on the centers-
tand.
3. Place an oil pan under the final
transmission case to collect the
used oil.
4. Remove the oil filler cap and
drain bolt to drain the oil from the
final transmission case.
1. Final transmission oil filler cap
2. Final transmission oil drain bolt
5. Install the final transmission oil
drain bolt, and then tighten it to
the specified torque.
6. Add the specified amount of the
recommended final transmission
oil, and then install and tighten
the oil filler cap.
Tightening torque:
Final transmission oil drain bolt:
18 Nm (1.8 m•kgf, 13.0 ft•lbf)
Tightening torque:
Spark plug:
20 Nm (2.0 m•kgf, 14.5 ft•lbf)
PERIODIC MAINTENANCE AND MINOR REPAIR
6-7
6
5RW-F8199-E4.QXD 19/11/07 08:01 Página 42
Page 64 of 72

6. Wax all painted surfaces.
7. Let the scooter dry completely
before storing or covering it.
EWA10940
s s
WARNING
●Make sure that there is no oil or
wax on the brakes or tires. If
necessary, clean the brake
discs and brake linings with a
regular brake disc cleaner or
acetone, and wash the tires
with warm water and a mild
detergent.
●Before operating the scooter
test its braking performance
and cornering behavior.
ECA10800
CAUTION:
●Apply spray oil and wax spa-
ringly and make sure to wipe
off any excess.
●Never apply oil or wax to any
rubber and plastic parts, but
treat them with a suitable care
product.
●Avoid using abrasive polishing
compounds as they will wear
away the paint.
NOTE:
Consult a Yamaha dealer for advice
on what products to use.
EAU26300
Storage
Short-term
Always store your scooter in a cool,
dry place and, if necessary, protect it
against dust with a porous cover.
ECA10820
CAUTION:
●Storing the scooter in a poorly
ventilated room or covering it
with a tarp, while it is still wet,
will allow water and humidity to
seep in and cause rust.
●To prevent corrosion, avoid
damp cellars, stables (because
of the presence of ammonia)
and areas where strong chemi-
cals are stored.
Long-term
Before storing your scooter for seve-
ral months:
1. Follow all the instructions in the
“Care” section of this chapter.
2. Drain the carburetor float cham-
ber by loosening the drain bolt;
this will prevent fuel deposits
from building up. Pour the drai-
ned fuel into the fuel tank.
SCOOTER CARE AND STORAGE
7-3
7
5RW-F8199-E4.QXD 19/11/07 08:01 Página 64