2007 YAMAHA YFM50R battery

EBU17420
TABLE OF CONTENTS
SAFETY INFORMATION ............................. 1-1
LOCATION OF THE WARNING AND
SPECIFICATION LABELS ............................ 2-1
DESCRIPTION .............................................. 3-1
Left view ..................................................... 3-1
Right view................................................... 3-1
Controls and instruments ........................... 3-2
INSTRUMENT AND CONTROL
FUNCTIONS .................................................. 4-1
Main switch ............................................... 4-1
Indicator light ............................................. 4-1
Handlebar switches ................................... 4-2
Engine stop switch with lanyard ................ 4-2
Throttle lever ............................................. 4-4
Speed limiter ............................................. 4-5
Front brake lever ....................................... 4-6
Rear brake lever ........................................ 4-6
Parking brake ............................................ 4-6
Drive select lever ....................................... 4-7
Fuel tank cap ............................................. 4-7
Fuel ........................................................... 4-8
Fuel cock ................................................... 4-9Choke ...................................................... 4-10
Seat ......................................................... 4-11
PRE-OPERATION CHECKS ..........................5-1
Pre-operation check list ............................. 5-1
Fuel ............................................................ 5-3
Engine oil ................................................... 5-3
Final gear oil .............................................. 5-3
Front and rear brakes ................................ 5-3
Throttle lever .............................................. 5-4
Tires ........................................................... 5-4
Measuring the tire pressure ....................... 5-5
Tire wear limit ............................................ 5-6
Chassis fasteners ...................................... 5-6
Instruments, lights and switches ................ 5-6
Battery ....................................................... 5-6
OPERATION...................................................6-1
Starting a cold engine ................................ 6-1
Starting a warm engine .............................. 6-3
Shifting ....................................................... 6-3
Engine break-in .......................................... 6-5
Parking ....................................................... 6-5
Parking on a slope ..................................... 6-6
Accessories and loading ............................ 6-7

RIDING YOUR ATV ...................................... 7-1
GETTING TO KNOW YOUR ATV.............. 7-2
RIDE WITH CARE AND GOOD
JUDGEMENT ...........................................7-2
BE CAREFUL WHERE YOU RIDE ............ 7-8
TURNING YOUR ATV ............................. 7-12
CLIMBING UPHILL .................................. 7-13
RIDING DOWNHILL................................. 7-16
CROSSING A SLOPE.............................. 7-17
CROSSING THROUGH SHALLOW
WATER ..................................................7-18
RIDING OVER ROUGH TERRAIN .......... 7-19
SLIDING AND SKIDDING ........................ 7-20
WHAT TO DO IF... ................................... 7-21
WHAT TO DO... ....................................... 7-21
PERIODIC MAINTENANCE AND MINOR
REPAIR .......................................................... 8-1
Owner’s manual and tool kit ...................... 8-1
Periodic maintenance and lubrication
chart ........................................................ 8-3
Checking the spark plug ............................ 8-7
Engine oil .................................................. 8-8
Final gear oil ............................................ 8-11
Cleaning the air filter element ................. 8-12
Cleaning the spark arrester ..................... 8-15
Adjusting the carburetor .......................... 8-17
Adjusting the engine idling speed ........... 8-17
Checking the throttle cable free play ....... 8-18Valve clearance ....................................... 8-18
Checking the front and rear brake
shoes .....................................................8-19
Adjusting the front brake lever free
play ........................................................8-20
Adjusting the rear brake lever free play ... 8-22
Checking and lubricating the cables ........ 8-23
Checking and lubricating the front and
rear brake levers ....................................8-24
Checking the wheel bearings ................... 8-24
Lubricating the knuckle shafts ................. 8-24
Lubricating the steering shaft ................... 8-25
Battery ..................................................... 8-25
Replacing the fuse ................................... 8-28
Removing a wheel ................................... 8-28
Installing a wheel ..................................... 8-29
Troubleshooting ....................................... 8-31
Troubleshooting chart .............................. 8-32
CLEANING AND STORAGE ..........................9-1
Cleaning ..................................................... 9-1
Storage ...................................................... 9-2
SPECIFICATIONS .......................................10-1
CONSUMER INFORMATION.......................11-1
Identification numbers .............................. 11-1

5-2
1
2
3
45
6
7
8
9
10
11
WARNING

EWB00480
Always inspect your ATV each time you use it to make sure it is in safe operating condition.
Always follow the inspection and maintenance procedures and schedules described in the Owner’s
Manual. Failure to inspect increases the possibility of an accident or equipment damage.
Wheels and tires

Check wheel condition, and replace if damaged.

Check tire condition and tread depth. Replace if necessary.

Check air pressure. Correct if necessary.5-4, 5-5, 5-6
Brake levers

Make sure that operation is smooth. Lubricate lever pivoting points
if necessary.8-24
Chassis fasteners

Make sure that all nuts, bolts and screws are properly tightened. 5-6
Instruments and switches

Check operation, and correct if necessary. 5-6
Battery

Check electrolyte level. Fill with distilled water if necessary. 5-6, 8-25
ITEM ROUTINE PAGE

5-6
1
2
3
45
6
7
8
9
10
11

EBU19830
Tire wear limit
Replace the tire when the tire groove decreases to
3 mm (0.12 in).
EBU19840
Chassis fasteners
Make sure that all nuts, bolts and screws are prop-
erly tightened.
EBU19850
Instruments, lights and switches
Check that all instruments, lights and switches are
working properly. Correct if necessary.
EBU19860
Battery
Check the fluid level in the battery. Fill with distilled
water if necessary. (See page 8-25.) Recommended pressure:
Front
20.0 kPa (2.9 psi) (0.200 kgf/cm
2
)
Rear
20.0 kPa (2.9 psi) (0.200 kgf/cm
2
)
Minimum:
Front
17.0 kPa (2.5 psi) (0.170 kgf/cm
2
)
Rear
17.0 kPa (2.5 psi) (0.170 kgf/cm
2
)
Maximum:
Front
23.0 kPa (3.3 psi) (0.230 kgf/cm
2
)
Rear
23.0 kPa (3.3 psi) (0.230 kgf/cm
2
)
1. Tire wear limit

6-2
1
2
3
4
56
7
8
9
10
11

Position (1):

Cold engine start with ambient temperature be-
low 30 °C (90 °F).
Position (2):

Warming up position.
Position (3):

Cold engine start with ambient temperature
above 25 °C (80 °F).
Ambient temp./choke position
6. Completely close the throttle lever and start
the engine by pushing the start switch.
NOTE:

If the engine fails to start, release the start switch,
then push it again. Pause a few seconds before
the next attempt. Each cranking should be as short
as possible to preserve battery energy. Do not
1. Fully open “ON”
2. Half open (warming up position)
3. Closed “OFF”
4. Choke
ON
OFF
0°
30°10°20°30°
50°70°90°°F °C
4 1
133
2

8-5
1
2
3
4
5
6
78
9
10
11

18
*
Crankcase breather
system

Check breather hose for cracks or other damage,
and replace if necessary.
√√√
19 Engine oil

Change.

Check ATV for oil leakage, and correct if neces-
sary.
√ √√√
20 Final gear oil

Change.

Check ATV for oil leakage, and correct if neces-
sary.
√√
21
*
Moving parts and
cables


Lubricate.
√√√√
22
*
Throttle lever hous-
ing and cable


Check operation and correct if necessary.

Check throttle cable free play and adjust if neces-
sary.

Lubricate throttle lever housing and cable.
√√√√√
23
*
Exhaust system


Check for leakage and replace gasket(s) if neces-
sary.

Check for looseness and tighten all screw clamps
and joints if necessary.
√√√
24 Spark arrester

Clean.
√√√
25
*
Front and rear brake
switches


Check operation and correct if necessary.
√√√√√
26
*
Battery


Check electrolyte level and specific gravity, and
correct if necessary.

Make sure that the breather hose is properly
routed.
√√√√√
NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth136612
km
(mi)320
(200)1200
(750)2400
(1500)2400
(1500)4800
(3000)
hours 20 75 150 150 300

8-25
1
2
3
4
5
6
78
9
10
11

EBU25090
Lubricating the steering shaft
The steering shaft must be lubricated at the inter-
vals specified in the periodic maintenance and lu-
brication chart.
Lubricate the steering shaft using a grease gun.
EBU25121
Battery
A poorly maintained battery will corrode and dis-
charge quickly. The electrolyte level, battery leadconnections and breather hose routing should be
checked before each ride and at the intervals
specified in the periodic maintenance and lubrica-
tion chart.
To check the electrolyte level
1. Place the ATV on a level surface.
2. Check the electrolyte level in the battery.
NOTE:

The electrolyte should be between the minimum
and maximum level marks.
3. If the electrolyte is at or below the minimum
level mark, add distilled water to raise it to the
maximum level mark. Recommended lubricant:
Lithium-soap-based grease
1. Grease nipple
1

8-26
1
2
3
4
5
6
78
9
10
11
CAUTION:

ECB00590
Use only distilled water, as tap water contains
minerals that are harmful to the battery.
WARNING

EWB02160
Battery electrolyte is poisonous and danger-
ous, as it contains sulfuric acid, which can
cause severe burns. Avoid contact with skin,
eyes or clothing. Always shield your eyes
when working near batteries.Antidote:
EXTERNAL: Flush with water.
INTERNAL: Drink large quantities of water or
milk. Follow with milk of magnesia, beaten egg
or vegetable oil. Call a physician immediately.
EYES: Flush with water for 15 minutes and get
prompt medical attention.
Batteries produce explosive gases. Keep
sparks, flame, cigarettes or other sources of ig-
nition away. Ventilate when charging or using
in an enclosed space.
KEEP OUT OF REACH OF CHILDREN.
4. Check and, if necessary, tighten the battery
lead connections and correct the breather
hose routing.
To store the battery
If the ATV will not be used for more than one
month, the battery will need to be removed and
stored as follows.
1. Disconnect the negative lead first and then the
positive lead.

1. Maximum level mark
2. Minimum level mark

1
2