recommended oil YAMAHA JOG50R 2004 Owners Manual

2-stroke engine oil tank cap
To remove the 2-stroke engine oil tank
cap, pull it off.
To install the 2-stroke engine oil tank
cap, push it into the oil tank opening.
EWA10140
s s
WARNING
Make sure that the fuel and 2-stro-
ke engine oil tank caps are properly
installed before riding the scooter.
EAU13220
Fuel
1. Refill pipe
2. Fuel level
Make sure that there is sufficient fuel
in the tank. When refueling, be sure to
insert the pump nozzle into the fuel
tank filler hole and to fill the tank to
the bottom of the filler tube as shown.
EWA10880
s s
WARNING
Do not overfill the fuel tank,
otherwise it may overflow
when the fuel warms up and
expands.
Avoid spilling fuel on the hot
engine.
ECA10070
CAUTION
Immediately wipe off spilled fuel
with a clean, dry, soft cloth, since
fuel may deteriorate painted surfa-
ces or plastic parts.
EAU13270
Your Yamaha engine has been desig-
ned to use regular unleaded gasoline
with a research octane number of 91
or higher. If knocking (or pinging)occurs, use a gasoline of a different
brand or premium unleaded fuel. Use
of unleaded fuel will extend spark
plug life and reduce maintenance
costs.
EAU13460
2-stroke engine oil
Make sure that there is sufficient oil in
the 2-stroke engine oil tank. Add the
recommended 2-stroke engine oil if
necessary.
NOTE:
Make sure that the 2-stroke engine oil
tank cap is properly installed.
Recommended oil:
Yamalube 2 or equivalent 2-stroke
engine oil (JASO grade “FC”, or
ISO grades “EG-C” or “EG-D”)
Oil quantity:
1,4L (0,31 US qt)(1,23 Imp.qt)Recommended fuel:
REGULAR UNLEADED GASOLINE
ONLY
Fuel tank capacity:
5,5L (1,21 US gal) (4,8Imp.gal)
Fuel reserve amount:
1,9L(0,42US gal) (1,67Imp.gal)
3
INSTRUMENT AND CONTROL FUNCTIONS
3-5
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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. 6-11, 6-12, 6-13, 3-4
• 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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EAU20060
Final transmission oil
1. Oil filler bolt
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 it up by
riding the scooter for several
minutes, and then stop the engi-
ne.
1. Drain plug
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.
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 transmissionoil, and then install and tighten
the oil filler cap.
EWA11310
s s
WARNING
Make sure that no foreign
material enters the final trans-
mission case.
Make sure that no oil gets on
the tire or wheel.
7. Check the final transmission case
for oil leakage. If oil is leaking,
check for the cause.
EAUS1200
Coolant (only for liquid-
cooled models)
The coolant level should be checked
before each ride. In addition, the coo-
lant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
Recommended final transmission
oil:
SAE30 motor oil.
Oil quantity:
0,11 L (0,0003 Imp.qt)
Tightening torque:
Final transmission oil drain bolt:
18 Nm (1,8 m•kgf, 13,2 ft•lbf)
6
PERIODIC MAINTENANCE AND MINOR REPAIR
6-6
11
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EAUS1090
Cleaning the air filter
element
The air filter element should be clea-
ned at the intervals specified in the
periodic maintenance and lubrication
chart. Clean the air filter element more
frequently if you are riding in unu-
sually wet or dusty areas.
1. Lid from the air filter box
2. Screw
3. Screw
1. Remove the screw clamp and the
screws that fasten the air filter
case to the crankcase.
1. Lid from the air filter box
2. Screws (x 3)
2. Remove the air filter case cover
by removing the screws.
3. Pull the air filter element out.
4. Clean the air filter element with
solvent, and then squeeze the
remaining solvent out.
1. The air filter
EWA10430
s s
WARNING
Use only a dedicated parts clea-
ning solvent. To avoid the risk of
fire or explosion, do not use gasoli-
ne or solvents with a low flash
point.
ECA10510
CAUTION
To avoid damaging the foam mate-
rial, handle it gently and carefully,
and do not twist or wring it.
5. Apply oil of the recommended
type to the entire surface of the
sponge material, and then sque-
eze the excess oil out.
NOTE:
The air filter element should be wet
but not dripping.
6. Insert the element into the air fil-
ter case.
Recommended oil:
Engine oil
6
PERIODIC MAINTENANCE AND MINOR REPAIR
6-8
12
3
1 2
1
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EAU32343
Checking the front brake
fluid level
1. Minimum level
Insufficient brake fluid may allow air
to enter the brake system, possibly
causing it to become ineffective.
Before riding, check that the brake
fluid is above the minimum level mark
and replenish if necessary. A low bra-
ke fluid level may indicate worn brake
pads and/or brake system leakage. If
the brake fluid level is low, be sure to
check the brake pads for wear and
the brake system for leakage.Observe these precautions:
When checking the fluid level,
make sure that the top of the
master cylinder is level by turning
the handlebars.
Use only the recommended qua-
lity brake fluid, otherwise the rub-
ber seals may deteriorate, cau-
sing leakage and poor braking
performance.
Refill with the same type of brake
fluid. Mixing fluids may result in a
harmful chemical reaction and
lead to poor braking performan-
ce.
Be careful that water does not
enter the master cylinder when
refilling. Water will significantly
lower the boiling point of the fluid
and may result in vapor lock.
Brake fluid may deteriorate pain-
ted surfaces or plastic parts.
Always clean up spilled fluid
immediately.
As the brake pads wear, it is nor-
mal for the brake fluid level to
gradually go down. However, if
the brake fluid level goes down
suddenly, have a Yamaha dealer
check the cause.
EAU22720
Changing the brake fluid
Have a Yamaha dealer change the
brake fluid at the intervals specified in
the NOTE after the periodic mainte-
nance and lubrication chart. In addi-
tion, have the oil seals of the brake
master cylinder and caliper as well as
the brake hose replaced at the inter-
vals listed below or whenever they are
damaged or leaking.
Oil seals: Replace every two
years.
Brake hose: Replace every four
years.
EAU23100
Checking and lubricating the
cables
The operation of all control cables
and the condition of the cables
should be checked before each ride,
Recommended brake fluid:
DOT 4
6
PERIODIC MAINTENANCE AND MINOR REPAIR
6-13
MIN
1
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and the cables and cable ends should
be lubricated if necessary. If a cable is
damaged or does not move smoothly,
have a Yamaha dealer check or repla-
ce it.
EWA10720
s s
WARNING
Damage to the outer sheath may
interfere with proper cable opera-
tion and will cause the inner cable
to rust. Replace a damaged cable
as soon as possible to prevent
unsafe conditions.
EAU23110
Checking and lubricating the
throttle grip and cable
The operation of the throttle grip
should be checked before each ride.
In addition, the cable should be lubri-
cated or replaced at the intervals spe-
cified in the periodic maintenance
chart.
EAU23120
Adjusting the Autolube pump
The Autolube pump is a vital and sop-
histicated component of the engine,
which must be adjusted by a Yamaha
dealer at the intervals specified in the
periodic maintenance and lubrication
chart.
EAU23170
Lubricating the front and
rear brake levers
The pivoting points of the front and
rear brake levers must be lubricated
at the intervals specified in the perio-
dic maintenance and lubrication
chart.
EAU23190
Checking and lubricating the
centerstand
The operation of the centerstand
should be checked before each ride,
and the pivots and metal-to-metal
contact surfaces should be lubricated
if necessary.
EWA11300
s s
WARNING
If the centerstand does not move
up and down smoothly, have a
Yamaha dealer check or repair it.
Recommended lubricant:
Lithium-soap-based grease (all-
purpose grease)
Recommended lubricant:
Lithium-soap-based grease (all-
purpose grease)
Recommended lubricant:
Engine oil
6
PERIODIC MAINTENANCE AND MINOR REPAIR
6-14
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DimensionsOverall length
1740 mm
Overall width
675 mm
Overall height
1065 mm
Seat height
770 mm
Wheelbase
1210 mm
Ground clearance
132 mm
WeightWith oil and fuel
CS50 80.5 kg
CS50Z 83.7 kg
EngineEngine type
CS50 Air cooled 2-stroke
CS50Z Liquid cooled 2-stroke
Cylinder arrangement
Forward-inclined single cylinder
Displacement
49.2 cm3
Bore x stroke
40.0 x 39.2 mm
Compression ratio
CS50 10.20 :1
CS50Z 11.40 :1
Starting system
Electric starter and kickstarter
Lubrication system
Separate lubrication (Yamaha autolube)Type
YAMALUBE 2-cycle oil or 2-stroke engine
oil
Engine oil quantityQuantity
1.4 L
Transmission oilType
YAMALUBE 4 (10W30) or SAE10W30
type SE motor oil
Oil change quantity
0.10 L
Air filter element
Wet element
Fuel
Recommended fuel
Regular unleaded gasoline
Fuel tank capacity
5.5 L
CarburetorManufacturer
CS50 DELLORTO GURTNER
CS50Z DELLORTO
Type x quantity
CS50 PHVA 12 ZS/1 PY 12/1
CS50Z PHVA 12 ZS/1
Spark plug(s)Manufacturer/model
NGK/BR8HS
Spark plug gap
0.6-0.7 mm
Clutch type
Dry, centrifugal automatic
TransmissionPrimary reduction system
Helical gear
Primary reduction ratio
52/13 (4.000)
Secondary reduction system
Spur gear
Secondary reduction ratio
CS50 42/13 (3.230)
CS50Z 43 x 13 (3.310)
Transmission type
Single speed automatic
Operation
Centrifugal automatic type
ChassisCaster angle
25.00 degree
Trail
80.0 mm
Front tireSize
110/70-12 47L
Rear tireSize
120/70-12 51L 130/70-12 56L
Maximum load
CS50 161 kg
CS50Z 158 kg
Tire air pressure (measured on cold
tires)
Front
175 kPa
Rear
200 kPa
8
SPECIFICATIONS
8-1
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Front wheelRim size
MT 2.75X12
Rear wheelRim size
MT 3.00X12
Front brakeType
Single disc brake
Operation
Right hand operation
Recommended fluid
DOT 4
Rear brakeType
Drum brake
Operation
Left hand operation
Front suspensionType
Telescopic fork
Spring/shock absorber type
Coil spring/oil damper
Wheel travel
70.0 mm
Rear suspensionType
Unit swing
Spring/shock absorber type
Coil spring/oil damper
Wheel travel
60.0 mm
Electrical systemIgnition systemCDI
Charging system
Flywheel magneto
BatteryModel
GT4L-BS
Voltage, capacity
12 V, 4.0 Ah
Bulb voltage, wattage x quantityHeadlight
12 V, 35 W/35.0 W x 1
Tail/brake light
12 V, 21.0 W/5.0 W x 1
Front turn signal light
12 V, 16.0 W x 2
Rear turn signal light
12 V, 10.0 W x 2
Meter lighting
12 V, 1.2 W x 2
Oil level warning light
LED
Fuel level warning light
NONE
FusesMain fuse
7.5 A
Engine idle speed
1800-2200 r/min
Brake pad lining thickness-inner
4.0 mm
Limit
0.8 mm
Brake pad lining thickness-outer
4.0 mmLimit
0.8 mm
Front brake lever free play
2.0-5.0 mm
Rear brake lever free play
10.0-20.0 mm
8
SPECIFICATIONS
8-2
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