and never travel faster than
warranted by road and traffic
conditions.
• Always signal before turning or
changing lanes. Make sure that
other motorists can see you.
The posture of the operator and
passenger is important for proper
control.
• The operator should keep both
hands on the handlebar and
both feet on the footboard
during operation to maintain
control of the scooter.
• The passenger should always
hold onto the operator, the seat
strap or grab bar, if equipped,
with both hands and keep both
feet on the passenger foo-
trests.
• Never carry a passenger
unless he or she can firmly pla-
ce both feet on the passenger
footrests.
Never ride under the influence of
alcohol or other drugs.
This scooter is designed for on-
road use only. It is not suitable for
off-road use.Protective apparel
The majority of fatalities from scooter
accidents are the result of head inju-
ries. The use of a safety helmet is the
single most critical factor in the pre-
vention or reduction of head injuries.
Always wear an approved hel-
met.
Wear a face shield or goggles.
Wind in your unprotected eyes
could contribute to an impair-
ment of vision which could delay
seeing a hazard.
The use of a jacket, substantial
shoes, trousers, gloves, etc., is
effective in preventing or redu-
cing abrasions or lacerations.
Never wear loose-fitting clothes,
otherwise they could catch on
the control levers or wheels and
cause injury or an accident.
Never touch the engine or
exhaust system during or after
operation. They become very hot
and can cause burns. Always
wear protective clothing that
covers your legs, ankles, and feet.
Passengers should also observe
the above precautions.Modifications
Modifications made to this scooter
not approved by Yamaha, or the
removal of original equipment, may
render the scooter unsafe for use and
may cause severe personal injury.
Modifications may also make your
scooter illegal to use.
Loading and accessories
Adding accessories or cargo to your
scooter can adversely affect stability
and handling if the weight distribution
of the scooter is changed. To avoid
the possibility of an accident, use
extreme caution when adding cargo
or accessories to your scooter. Use
extra care when riding a scooter that
has added cargo or accessories. Here
are some general guidelines to follow
if loading cargo or adding accessories
to your scooter:
Loading
The total weight of the operator, pas-
senger, accessories and cargo must
not exceed the maximum load limit of
CS50Z 158kg (348,39lb), CS50 161kg
(355lb). When loading within this
weight limit, keep the following in
mind:
1
SAFETY INFORMATION t
1-2
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EAU15591
The condition of a vehicle is the
owner’s responsibility. Vital compo-
nents can start to deteriorate quickly
and unexpectedly, even if the vehicle
remains unused (for example, as a
result of exposure to the elements).
Any damage, fluid leakage or loss of
tire air pressure could have serious
consequences. Therefore, it is very
important, in addition to a thorough
visual inspection, to check the follo-
wing points before each ride.
NOTE:
Pre-operation checks should be
made each time the vehicle is used.
Such an inspection can be accom-
plished in a very short time; and the
added safety it assures is more than
worth the time involved.
EWA11150
s s
WARNING
If any item in the Pre-operation
check list is not working properly,
have it inspected and repaired
before operating the vehicle.
4
PRE-OPERATION CHECKS
4-1
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EAU15603
Pre-operation check list
PRE-OPERATION CHECKS
4-2
4
ITEM CHECKS PAGE
• Check fuel level in fuel tank.
Fuel• Refuel if necessary. 3-3, 3-4
• Check fuel line for leakage.
• Check oil level in oil tank.
2-stroke engine oil• If necessary, add recommended oil to specified level. 3-4, 3-5
• Check vehicle for oil leakage.
Transmission oil• Check oil level in transmission case.
• If necessary, add recommended oil to specified level.6-6
• Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic system.
• Check brake pads for wear.
Front brake• Replace if necessary. 3-4, 6-11, 6-12, 6-13
• Check fluid level in reservoir.
• If necessary, add recommended brake fluid to specified level.
• Check hydraulic system for leakage.
• Check operation.
Rear brake• Lubricate cable if necessary.
3-4, 6-11, 6-12
• Check lever free play.
• Adjust if necessary.
• Make sure that operation is smooth.
Throttle grip• Check cable free play.
6-9, 6-14
• If necessary, have Yamaha dealer adjust cable free play and lubricate cable
and grip housing.
• Check for damage.
Wheels and tires• Check tire condition and tread depth.
6-9, 6-15
• Check air pressure.
• Correct if necessary.
Brake levers• Make sure that operation is smooth.
• Lubricate lever pivoting points if necessary.3-4, 6-11, 6-14
Centerstand• Make sure that operation is smooth.
• Lubricate pivot if necessary.6-14
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EAU17280
Safety is an obligation of the owner.
Periodic inspection, adjustment and
lubrication will keep your vehicle in
the safest and most efficient condi-
tion possible. The most important
points of inspection, adjustment, and
lubrication are explained on the follo-
wing pages.
The intervals given in the periodic
maintenance and lubrication chart
should be simply considered as a
general guide under normal riding
conditions. However, DEPENDING
ON THE WEATHER, TERRAIN, GEO-
GRAPHICAL LOCATION, AND INDIVI-
DUAL USE, THE MAINTENANCE
INTERVALS MAY NEED TO BE
SHORTENED.
EWA10320
s s
WARNING
If you are not familiar with mainte-
nance work, have a Yamaha dealer
do it for you.
EWA10330
s s
WARNING
This scooter is designed for use on
paved roads only. If this scooter is
operated in abnormally dusty,muddy or wet conditions, the air fil-
ter element should be cleaned or
replaced more frequently, otherwi-
se rapid engine wear may result.
Consult a Yamaha dealer for proper
maintenance intervals.
6
PERIODIC MAINTENANCE AND MINOR REPAIR
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EAU17710
Periodic maintenance and lubrication chart
NOTE:
The annual checks must be performed every year, except if a kilometer-based maintenance is performed
instead.
From 30000 km, repeat the maintenance intervals starting from 6000 km.
Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and
technical skills.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-2
6
ODOMETER READING (x 1000 Km) ANNUAL
NOITEM CHEK OR MAINTENANCE JOB 1 6 12 18 24CHECK
1*Fuel line• Check fuel and vacuum hoses for cracks or damage.√√√√ √
• Check condition.
2
Spark plug• Clean and regap.√√
• Replace.√√
3Air filter element• Clean.√√• Replace.√√
4*Front brake• Check operation, fluid level and vehicle for fluid leakage.√√ √ √√ √• Replace brake pads. Whenever worn to the limit
5*Rear brake• Check operation and adjust brake lever free play.√√ √ √√ √• Replace brake shoes. Whenever worn to the limit
6*Brake hose• Check for cracks or damage.√√√√ √• Replace. Every 4 years
7*Wheels• Check runout and for damage.√√√√
• Check tread depth and for damage.
8*Tires• Replace if necessary.
√√√√ √
• Check air pressure.
• Correct if necessary.
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EAU19602
Checking the spark plug
The spark plug is an important engine
component, which is easy to check.
Since heat and deposits will cause
any spark plug to slowly erode, the
spark plug should be removed and
checked in accordance with the
periodic maintenance and lubrication
chart. In addition, the condition of the
spark plug can reveal the condition of
the engine.
To remove the spark plug
1. Remove the spark plug cap.
2. Remove the spark plug as
shown, with the spark plug
wrench included in the owner’s
tool kit.
To check the spark plug
1. Check that the porcelain insula-
tor around the center electrode of
the spark plug is a medium-to-
light tan (the ideal color when the
vehicle is ridden normally).
NOTE:
If the spark plug shows a distinctly
different color, the engine could be
defective. Do not attempt to diagnosesuch problems yourself. Instead, have
a Yamaha dealer check the vehicle.
2. Check the spark plug for electro-
de erosion and excessive carbon
or other deposits, and replace it if
necessary.
To install the spark plug
1. Distance between electrodes
1. Measure the spark plug gap with
a wire thickness gauge and, if
necessary, adjust the gap to spe-
cification.2. Clean the surface of the spark
plug gasket and its mating surfa-
ce, and then wipe off any grime
from the spark plug threads.
3. Install the spark plug with the
spark plug wrench, and then
tighten it to the specified torque.
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.
4. Install the spark plug cap.
Tightening torque:
Spark plug:
20 Nm (2,0 m•kgf, 14,6 ft•lbf)
Spark plug gap:
0,6 ~ 0,7 mm (0,24 ~ 0,27in)
Specified spark plug:
BR8HS/NGK
6
PERIODIC MAINTENANCE AND MINOR REPAIR
6-5
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EWA10500
s s
WARNING
The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperatu-
re of the tires equals the
ambient temperature).
The tire air pressure must be
adjusted in accordance with
the riding speed and with the
total weight of rider, passenger,
cargo, and accessories appro-
ved for this model.
EWA11200
s s
WARNING
Because loading has an enormous
impact on the handling, braking,
performance and safety characte-
ristics of your vehicle, you should
keep the following precautions in
mind.
NEVER OVERLOAD THE VEHI-
CLE! Operation of an overloa-
ded motorcycle may result in
tire damage, loss of control, or
severe injury. Make sure that
the total weight of rider, pas-
senger, cargo, and accessories
does not exceed the specified
maximum load for the vehicle.
Do not carry along loosely pac-
ked items, which can shift
during a ride.
Securely pack the heaviest
items close to the center of the
vehicle and distribute the
weight evenly on both sides.
Adjust the tire air pressure with
regard to the load.
Check the tire condition and air
pressure before each ride.
1. Depth
2. Side face
Tire inspection
The tires must be checked before
each ride. If the center tread depth
reaches the specified limit, if the tire
has a nail or glass fragments in it, or if
the sidewall is cracked, have a Yama-
ha dealer replace the tire immediately.
Minimum tire tread depth (front
and rear):
1.6 mm (0.06 in)
Tire air pressure (measured on cold
tires):
0~90 kg (0~198 lb):
Front:
175 kPa (24,90lb) (1,75 kgf/cm
2)
Rear:
200 kPa (28,44lb) (2,0 kgf/cm
2)
90~190 kg (198~419 lb) to maxi-
mum load:
Front:
175 kPa (24,90lb) (1,75 kgf/cm
2)
Rear:
225 kPa (32lb) (2,25 kgf/cm
2)
Maximum load*:
158,3 kg (348,4lb) CS50Z
161kg (255lb) CS50
* Total weight of rider, passenger,
cargo and accessories
6
PERIODIC MAINTENANCE AND MINOR REPAIR
6-10
5RW-F8199-E3.qxd 08/09/2005 18:07 Página 37
NOTE:
The tire tread depth limits may differ
from country to country. Always
comply with the local regulations.
Tire information
This model is equipped with tubeless
tires.
EWA10470
s s
WARNING
Have a Yamaha dealer replace
excessively worn tires. Besides
being illegal, operating the
vehicle with excessively worn
tires decreases riding stability
and can lead to loss of control.
The replacement of all wheel
and brake related parts, inclu-ding the tires, should be left to
a Yamaha dealer, who has the
necessary professional know-
ledge and experience.
EAU22100
Adjusting the brake lever
free play
a. Free play
The brake lever free play should mea-
sure 2 ~ 5 mm (0,08 ~ 0,20 in) as
shown. Periodically check the brake
lever free play and, if necessary, have
a Yamaha dealer adjust it.
EWA10640
s s
WARNING
An incorrect brake lever free play
indicates a hazardous condition in
the brake system. Do not operatethe motorcycle until the brake sys-
tem has been checked or repaired
by a Yamaha dealer.
EAU22170
Adjusting the rear brake
lever free play
a. Free play
The brake lever free play should mea-
sure 5 ~ 10 mm (0,2 ~ 0,4 in) as
shown. Periodically check the brake
lever free play and, if necessary,
adjust it as follows.
j
k
Front tire:
Size:
110/70-12
Rear tire:
Size:
120/70-12 (Spain)
130/70-12
6
PERIODIC MAINTENANCE AND MINOR REPAIR
6-11
aa
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