2005 YAMAHA JOG50R engine

EAUS1050
Kickstarter
1. Kickstarter
To start the engine, push the kickstar-
ter down lightly with your foot until the
gears engage, and then push it down
smoothly but forcefully.
EAU13931
Seat
To open the seat
1. Place the scooter on the centers-
tand.
2. Insert the key into the main
switch, and then turn it counter-
clockwise.
NOTE:
Do not push inward when turning the
key.
3. Fold the seat up.
To close the seat
1. Fold the seat down, and then
push it down to lock it in place.
2. Remove the key from the main
switch if the scooter will be left
unattended.
NOTE:
Make sure that the seat is properly
secured before riding.
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Storage compartment
1. Storage compartment
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Storage compartment
There is a storage compartment
under the seat. (See page 3-6.)
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WARNING
Do not exceed the load limit of
3,5 kg (7,4 lb) for the storage
compartment.
Do not exceed the maximum
load of 158kg (348,4lb) CS50Z
or 161kg (355lb) CS50 for the
vehicle.
3
INSTRUMENT AND CONTROL FUNCTIONS
3-6
1
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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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WARNING
Become thoroughly familiar
with all operating controls and
their functions before riding.
Consult a Yamaha dealer
regarding any control or func-
tion that you do not thoroughly
understand.
Never start the engine or ope-
rate it in a closed area for any
length of time. Exhaust fumes
are poisonous, and inhaling
them can cause loss of cons-
ciousness and death within a
short time. Always make sure
that there is adequate ventila-
tion.
For safety, always start the
engine with the centerstand
down.
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Starting a cold engineECA10250
CAUTION
See page 5-2 for engine break-in
instructions prior to operating the
vehicle for the first time.
1. Turn the key to “*”, and when the
oil level warning light comes on,
turn it to “ON”.
ECA10240
CAUTION
If the oil level warning light does
not come on, have a Yamaha dealer
check the electrical circuit.
2. Close the throttle completely.
3. While applying the front or rear
brake, start the engine by pus-
hing the start switch or by pus-
hing the kickstarter lever down.
NOTE:
If the engine fails to start by pushing
the start switch, release the switch,
wait a few seconds, and then try
again. Each starting attempt should
be as short as possible to preserve
the battery. Do not crank the engine
more than 5 seconds on any oneattempt. If the engine does not start
with the starter motor, try using the
kickstarter.
ECA11040
CAUTION
For maximum engine life, never
accelerate hard when the engine is
cold!
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Starting off
NOTE:
Before starting off, allow the engine to
warm up.
1. While pulling the rear brake lever
with your left hand and holding
the grab bar with your right hand,
push the scooter off the centers-
tand.
2. Sit astride the seat, and then
adjust the rear view mirrors.
3. Switch the turn signal on.
4. Check for oncoming traffic, and
then slowly turn the throttle grip
(on the right) in order to take off.
5. Switch the turn signal off.
5
OPERATION AND IMPORTANT RIDING POINTS
5-1
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Acceleration and
deceleration
The speed can be adjusted by ope-
ning and closing the throttle. To incre-
ase the speed, turn the throttle grip in
direction (a). To reduce the speed,
turn the throttle grip in direction (b).
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Braking
1. Close the throttle completely.
2. Apply both front and rear brakes
simultaneously while gradually
increasing the pressure.
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WARNING
Avoid braking hard or suddenly
(especially when leaning over
to one side), otherwise the sco-
oter may skid or overturn.
Railroad crossings, streetcar
rails, iron plates on road cons-
truction sites, and manhole
covers become extremely slip-
pery when wet. Therefore, slow
down when approaching such
areas and cross them with cau-
tion.
Keep in mind that braking on a
wet road is much more difficult.
Ride slowly down a hill, as bra-
king downhill can be very diffi-
cult.
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Engine break-in
There is never a more important
period in the life of your engine than
the period between 0 and 1000 km
(600 mi). For this reason, you should
read the following material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1000 km (600 mi). The various parts in
the engine wear and polish themsel-
ves to the correct operating clearan-
ces. During this period, prolonged
full-throttle operation or any condition
that might result in engine overhea-
ting must be avoided.
EAUT1110
0~150 km (0~90 mi)
Avoid operation above 1/3 throttle.
Stop the engine and let it cool for 5 to
10 minutes after every hour of opera-
tion. Vary the speed of the scooterfrom time to time. Do not operate it at
one set throttle position.
150~500 km (90~300 mi)
Avoid prolonged operation above 1/2
throttle.
500~1000 km (300~600 mi)
Avoid cruising speeds in excess of
3/4 throttle.
ECAT1010
CAUTION
After 1000 km (600 mi) of operation,
be sure to replace the final gear oil.
1000 km (600 mi) and beyond
Avoid prolonged full throttle opera-
tion. Vary speeds occasionally.
ECA10270
CAUTION
If any engine trouble should occur
during the engine break-in period,
immediately have a Yamaha dealer
check the vehicle.
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Parking
When parking, stop the engine, and
then remove the key from the main
switch.
5
OPERATION AND IMPORTANT RIDING POINTS
5-2
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WARNING
Since the engine and exhaust
system can become very hot,
park in a place where pedes-
trians or children are not likely
to touch them.
Do not park on a slope or on
soft ground, otherwise the
vehicle may overturn.
5
OPERATION AND IMPORTANT RIDING POINTS
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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.
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WARNING
If you are not familiar with mainte-
nance work, have a Yamaha dealer
do it for you.
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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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ODOMETER READING (x 1000 Km) ANNUAL
NOITEM CHEK OR MAINTENANCE JOB 1 6 12 18 24CHECK
9*Wheel bearings• Check bearing for looseness or damage.√√√√
10 *Steering bearings• Check bearing play and steering for roughness.√√ √ √√• Lubricate with lithium-soap-based grease. Every 24000 km
11 *Chassis fasteners• Make sure that all nuts, bolts and screws are
properly tightened.√√√√ √
12Centerstand• Check operation.
• Lubricate.√√√√ √
13 *Front fork• Check operation and for oil leakage.√√√√
14 *Shock absorber
• Check operation and shock absorber for oil leakage.√√√√
assembly
15 *Carburetor• Adjust engine idling speed.√√ √ √√ √
16 *Autolube pump• Check operation.
• Bleed if necessary.√√√√
17 *Cooling system• Check coolant level and vehicle for coolant leakage.√√√√ √• Change. Every 3 years
18Final transmission • Check vehicle for oil leakage.√√ √oil
• Change.√√√
19 *V-belt• Replace. Every 12000 km
20 *Front and rear brake
• Check operation.√√ √ √√ √
switches
21Moving parts and
• Lubricate.√√√√ √
cables
22 *Lights, signals • Check operation.
and switches• Adjust headlight beam.√√ √ √√ √
PERIODIC MAINTENANCE AND MINOR REPAIR
6-3
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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
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PERIODIC MAINTENANCE AND MINOR REPAIR
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