2004 YAMAHA YFM50S check

EBU00011
IMPORTANT NOTICE
This machine is designed and manufactured for
OFF-ROAD use only. It is illegal and unsafe to
operate this machine on any public street, road
or highway.
This machine complies with all applicable OFF-
ROAD noise level and spark arrester laws and
regulations in effect at the time of manufacture.
Please check your local riding laws and regula-
tions before operating this machine.
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LOCATION OF THE WARNING AND
SPECIFICATION LABELS .......................1-1
SAFETY INFORMATION .........................2-1
DESCRIPTION AND MACHINE
IDENTIFICATION.....................................3-1
Identification number records ...............3-3
Key identification number .....................3-5
Vehicle identification number ...............3-7
Model label ...........................................3-9
CONTROL FUNCTIONS..........................4-1
Main switch ...........................................4-1
Indicator lights ......................................4-3
Handlebar switches ..............................4-3
Engine stop switch with cord (lanyard).....4-7
Throttle lever ......................................4-11
Speed limiter ......................................4-13
Front brake lever ................................4-17Rear brake lever .................................4-17
Parking brake .....................................4-19
Shift lever ...........................................4-21
Fuel tank cap ......................................4-21
Fuel cock ............................................4-23
Choke lever ........................................4-25
Seat ....................................................4-27
PRE-OPERATION CHECKS ...................5-1
Front and rear brakes ...........................5-5
Fuel ......................................................5-9
Engine oil ............................................5-11
Final gear oil .......................................5-15
Throttle lever ......................................5-17
Fittings and fasteners .........................5-17
Switches .............................................5-17
Battery ................................................5-17
Tires ...................................................5-19
How to measure tire pressure ............5-23
Tire wear limit .....................................5-25
EBU00015
CONTENTS
1
2
3
4
5
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2-7
8Never operate on excessively rough, slippery
or loose terrain until you have learned and
practiced the skills necessary to control the
ATV on such terrain. Always be especially
cautious on these kinds of terrain.
8Always follow proper procedures for turning
as described in this manual. Practice turning
at low speeds before attempting to turn at
faster speeds. Do not turn at excessive
speed.
8Never operate the ATV on hills too steep for
the ATV or for your abilities. Practice on
smaller hills before attempting larger hills.
8Always follow proper procedures for climbing
hills as described in this manual. Check the
terrain carefully before you start up any hill.
Never climb hills with excessively slippery or
loose surfaces. Shift your weight forward.
Never open the throttle suddenly or make
sudden gear changes. Never go over the top
of a hill at high speed.
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2-9
8Always follow proper procedures for going
down hills and for braking on hills as
described in this manual. Check the terrain
carefully before you start down any hill. Shift
your weight backward. Never go down a hill at
high speed. Avoid going down a hill at an
angle that would cause the vehicle to lean
sharply to one side. Go straight down the hill
where possible.
8Always follow proper procedures for crossing
the side of a hill as described in this manual.
Avoid hills with excessively slippery or loose
surfaces. Shift your weight to the uphill side of
the ATV. Never attempt to turn the ATV
around on any hill until you have mastered
the turning technique described in this manual
on level ground. Avoid crossing the side of a
steep hill if possible.
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2-11
8Always use proper procedures if you stall or
roll backwards when climbing a hill. If you stall
or roll backwards, follow the special proce-
dure for braking described in this manual.
Dismount on the uphill side or to a side if
pointed straight uphill. Turn the ATV around
and remount, following the procedure
described in this manual.
8Always check for obstacles before operating
in a new area.
8Never attempt to operate over large obsta-
cles, such as large rocks or fallen trees.
Always follow proper procedures when oper-
ating over obstacles as described in this man-
ual.
8Always be careful when skidding or sliding.
Learn to safely control skidding or sliding by
practicing at low speeds and on level, smooth
terrain. On extremely slippery surfaces, such
as ice, go slowly and be very cautious in
order to reduce the chance of skidding or slid-
ing out of control.
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4-11
EBU00063
Throttle lever
Once the engine is running, movement of the
throttle lever will increase the engine speed.
Regulate the speed of the machine by varying
the throttle position. Because the throttle is
spring-loaded, the machine will decelerate, and
the engine will return to an idle any time the
hand is removed from the throttle lever.
Before starting the engine, check the throttle to
be sure it is operating smoothly. Make sure it
returns to the idle position as soon as the lever
is released.
w
Malfunction of the throttle could make it diffi-
cult to speed up or slow down when you
need to. This could cause an accident.
Check the operation of the throttle lever
before you start the engine. If the throttle
does not work smoothly, check for the
cause. Correct the problem before riding the
ATV or consult a Yamaha dealer.
q
1. Throttle lever1. Levier d’accélérateur1. Palanca del aceleración
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5-1
EBU00113
PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM ROUTINE PAGE
Brakes9Check operation, condition and free play.
5-5–5-7, 8-41–8-49
9Adjust if necessary.
Fuel9Check fuel level.
9Fill with fuel if necessary.5-9–5-11
Engine oil9Check oil level.
9Fill with oil if necessary.5-11–5-13, 8-13–8-17
Final gear oil9Check for leakage. 5-15, 8-19–8-21
Throttle9Check for proper throttle cable operation. 5-17
Wheels and tires9Check tire pressure, wear and damage. 5-19–5-25, 8-55
Fittings and fasteners9Check all fittings and fasteners. 5-17
Switches9Check operation. 5-17
Battery9Check fluid level.
5-17, 8-57–8-63
9Fill with distilled water if necessary.
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5-5
EBU04731
Front and rear brakes
8Brake levers
Check for correct free play in the brake
levers. If the free play is incorrect, adjust it.
(See pages 8-43–8-49.)
8Check operation of the levers. They should
move smoothly and there should be a firm
feeling when the brake is applied. If not, have
the machine inspected by a Yamaha dealer.
8Brake operation
Test the brakes at slow speed after starting
out to make sure they are working properly. If
the brakes do not provide proper braking per-
formance, inspect the brakes for wear. (See
page 8-41.)
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