Yamaha QT50 User manual

OWNER'S MANUAL
LIT-11626-02 - 11
3L8 - 28199-11

SAFETY WARNINGS
1. Traffic regulations vary from state to
state. Study the regulations in your
state before riding this machine.
2. Never all
ow children to ride th is ma-
chine. Check
the tr af fic regul at ions in
your state regarding the mini
mum age
requirements
for a driver's licen se.
Abide by all state and local regulations.
3. This machine is a single-seater. It is
made for one rider only. Never ride
with
a passenger. Overloading will adversly
affect the machine's stabil ity . Do not
load the racks beyond their capaci ty .
The load capacity
of the front rack (car-
rier) is 3
kg (7 lbs). The load capacity" of
the rear rack (carrier) is 5 kg ( 11 lbs).
4. This bike is designed for on-road use
.only. It is not suitable for off-road use.
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5. Gasoline is highly flammable.
•
Always turn off the engine when re-
fuelling.
• Take care
not to spill any gasoline on
the engine or muffler when refuelling.
"' If any gasoline sp ills on the engine or
muf fl er , wipe it off immed i ately .
"' Never refuel while smoking or in the
vicinity of an open flame.
6. Always turn off the engine before leav-
ing the machine unattended.
7.
When transpor ting the machine in an-
ot her vehicl e, be sure it is kept upright
and that the fuel petcock is turned off .
If it should lean over, gasoline may leak
out of the carburetor or fuel tank .

8. The bike should always be on the center
stand when you start the engine. Check
the throttle grip a few times before
starting off. The engine speed should
slow down when the throttle is closed.
9. If you should swallow some gasoline or
inhale to many gasoline vapors, see
your doctor immediately.
If any gasoline
spills on your skin or clothing,
im-
mediately wash with soap and water
and change your clothes.
10. Do
not run the engine in a closed, un-
ventilated place. Exhaust gases are
harmful.
SAFETY RIDING POINTS
1. Give a clear signal in the following
instances:
Turning
left
Turning right
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Stopping or slow in g down
2. Braking ca n be extremely difficult on a
wet road. Avoid hard braking, the ma-
chine could sl ide. App ly the brakes
slowly when stopping on a wet surface.
3. Sl
ow down as you approach a corner or
turn. Once you have completed a turn,
accelerate sl
ow l y.
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4. Be care fu l whe n passing parked cars. A
dr iver might not see you and open a
door in your path.
5. Street car rails, iron plates on
road con-
struct ion sites, and man-hole covers be-
come extremely slippery when wet.
Slow down and cross them with cau-
ti on . Keep the machine upright. It could
slide
out from under you.
6. The brake
lining could get wet when
you wash the machine. After washing
the machine, check the brakes before
riding.
7.
Always wear a helmet, gloves, trousers
(tapered around
the cuff and ankle so
they do not flap), and a bright colored
jacket.

8. Do not carry too much luggage on the
bike. An overloaded machine is un-
stable. Refer
to page 1 for instructions
about carrying luggage. Use a strong
cord
to secure any luggage to the lug-
gage racks. A loose load will affect the
stability of the bike and could divert
your attention from the road.
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9. Never ride with just one hand on th e
handlebars.
Always ride with both
hands on the handlebars and both feet
on
the footrests.

INTRODUCTION
Please read th is manual carefully and completely before operating your
new bike. This manual will provide you with a good basic understanding of
the features, operation, and basic maintenance and inspection items of
this bike. If you have any questions regarding the operation or mainte-
nance of your bike, consu lt your Yamaha dealer.
NOTICE:~~~~ ~~~~~~~~~~~~~~~~
Some data in this manual may become outdated due to changes made
to this model in the future. If you have any question regarding this
manual or your bike, please consult your Yamaha dealer.
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NOTICE
Particularly important points are distinguished in this manual by the fol-
lowing notations:
NOTE: A NOTE provides key information to make procedures
easier
or clearer.
CAUTION: A CAUTION indicates special procedures that must be fol-
lowed to avoid damage to the bike.
WARNING: A WARNING indicates special procedures that must be
followed to avoid injury to a bike operator or person inspect-
ing
or repairing the bike.
OT50G OWNER'S MANUAL
FIRST PRINTING , APRIL, 1979
ALL RIGHTS RESERVED BY
YAMAHA MOTOR COMPANY, LTD., JAPAN
PRINTED IN JAPAN
LIT-11626-01 -96
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CONTENTS
MACHINE IDENTIFICATION ....................... 8
CONTROL FUNCTIONS................................ 9
PRE-OPERATION CHECKS.......................... 15
RIDING POINTS...... ... ..... ................ .. ........ .. .. .21
PERIODIC MAINTENANCE .. ........ .... . .... . .. ... 29
CONSUMER INFORMATION ...................... 32
WARRANTY INFORMATION .................. .... 34
SPECIFICATIONS .. . .. ............ ... . ... .. . ... ........ ... . 36
WIRING DIAGRAM . .. . .. ........ ... .... .. .. .. .. ........ .. 40
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MACHINE
IDENTIFICATION
Frame serial number
The frame se ri al number is stamped on the
front side f the steering head pipe.
1. Frame serial number
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Engine serial number
The engine serial num ber is stamped into the
left side of the engine lower of the cr ankcase.
1. Engine serial number
NOTE:- --- - ----- ----
The fir st three digits of these numbers are for
mode l identification; the remai ning digits
compr ise the unit produ ct ion number.

CONTROL FUNCTIONS
LEFT SIDE
RIGHT SIDE
I NSTRUMENTS
1. Front fork 12 . Front rack
2. Headlight
13 . Front wheel
3. Fuel tank 14 . Footrest
4. Oil tank
15 . Muff ler
5. Rear wheel
16 . Rear vi ew mirror
6. Rear shock absorber 17. Rear brake lever
7. Kick crank 18. L
eft handle switches
8. Tail/stop light 19. Speedometer
9. Flasher light
20 . Engine st
op switch
10. Rea r rack 21 . Fr
ont brake lever
11. Seat
22 . Throttle grip
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