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8-103
5B460004
Cable inspection and lubrication
WARNING
Damaged cables could restrict operation,
which may cause an accident or injury. Inspect
control cables frequently and replace dam-
aged cables. Corrosion can result when the
outer covering of control cables becomes
damaged. Cables can also become frayed or
kinked.Lubricate the cable ends. If the cables do not oper-
ate smoothly, ask a Yamaha dealer to replace
them.
Recommended lubricant:
Engine oil
EE.book Page 103 Tuesday, June 17, 2008 9:00 AM
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8-133 1. Jumper cable negative lead
1. Câble de démarrage négatif
1. Cable auxiliar negativo
1
6. Connect the negative lead of the jumper ca-
ble to the negative terminal of the charged
battery and the other end of the negative lead
to an unpainted metal surface of the crank-
case to be started.
7. Start the engine. (Refer to “Starting the en-
gine” on pages 6-7–6-9.)
8. After the engine starts, disconnect the nega-
tive lead of the jumper cable from the crank-
case and charged battery, and then
disconnect the positive lead of the jumper ca-
ble from the charged battery and the battery
in the vehicle.
9. Reinstall the console.
10. Reinstall the battery compartment cover.
11. Close the hood.
EE.book Page 133 Tuesday, June 17, 2008 9:00 AM
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8-157
5B410024
Troubleshooting charts
Starting problems or poor engine performance1. Fuel
Check if there is fuel
in the fuel tank.There is fuel.
Restart the engine.
No fuel.Supply fuel.
2. Compression
Use the electric
starter to see if
there is compression.There is compression.
Compression normal.
No compression.Ask a Yamaha dealer to
inspect.
3. Ignition
Remove the
spark plug and
check the electrodes.WetWipe clean with dry cloth.
DryAttach spark plug cap and
ground to chassis.Use the
electric starter.Spark is good.Ignition system is
normal.
Spark is weak.
Adjust the spark plug gap
or replace the spark plug. No spark.
Ask a Yamaha dealer to
inspect. 4. Battery
Use the electric starter.Engine turns over
quickly.Battery is good.
Engine turns over
slowly.Check the connections,
recharge.
Check the compression.
EE.book Page 157 Tuesday, June 17, 2008 9:00 AM
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8-158
Engine overheating
Wait for the engine to cool before removing the radiator cap. WARNING! If the engine is not cool when
removing the radiator cap, hot fluid and steam could blow out under pressure and burn you. Place
a thick rag over the cap and remove the cap slowly to allow any remaining pressure to escape.
If it is difficult to get the recommended coolant, tap water can be used temporarily, provided that it is
changed to the recommended coolant as soon as possible.Wait until the
engine has cooled.
Check the coolant level in the
coolant reservoir and/or radiator.
Level is OK.Level is low, check the
cooling system for leakage.
No
leakage.Leakage.
Ask a Yamaha dealer to inspect
and repair the cooling system.Add coolant. (See the text below.)
Restart the engine. If the engine overheats again, ask a
Yamaha dealer to inspect and/or repair the cooling system.
EE.book Page 158 Tuesday, June 17, 2008 9:00 AM
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9-1
EVU01030
1-CLEANING AND STORAGE
A. Cleaning
Frequent, thorough cleaning of your vehicle will
not only enhance its appearance but will improve
its general performance and extend the useful life
of many components.
1. Before cleaning the vehicle:
a. Block off the end of the exhaust pipe to
prevent water entry. A plastic bag and
strong rubber band may be used.
b. Make sure the spark plug and all filler
caps are properly installed.
2. If the engine case is excessively greasy, ap-
ply degreaser with a paint brush. Do not ap-
ply degreaser to the wheel axles.
EE.book Page 1 Tuesday, June 17, 2008 9:00 AM
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9-5
4. Once the majority of the dirt has been hosed
off, wash all surfaces with warm water and
mild, detergent-type soap. An old toothbrush
or bottle brush is handy for hard-to-get-at
places.
5. Rinse the vehicle off immediately with clean
water and dry all surfaces with a clean cham-
ois towel or soft, absorbent cloth.
6. Clean the seats with a vinyl upholstery clean-
er to keep the covers pliable and glossy.
7. Automotive-type wax may be applied to all
painted and chrome-plated surfaces. Avoid
combination cleaner-waxes. Many contain
abrasives which may scratch the paint or pro-
tective finish. When finished, start the engine
and let it idle for several minutes.
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9-7
5B410025
B. Storage
Long term storage (60 days or more) of your vehi-
cle will require some preventive procedures to
guard against deterioration. Make any necessary
repairs before storing the vehicle.
After thoroughly cleaning the vehicle, prepare for
storage as follows:
1. Fill the fuel tank with fresh fuel and add the
specified amount of Yamaha Fuel Stabilizer
and Conditioner or equivalent product. Oper-
ate the vehicle for at least 5 minutes to dis-
tribute treated fuel through the fuel system.
2. Remove the spark plug, pour about one ta-
blespoon of SAE 10W-40 or 20W-50 motor
oil in the spark plug hole and reinstall the
spark plug. Ground the spark plug wire and
turn the engine over several times to coat the
cylinder wall with oil. Specified amount:
1 oz of stabilizer to each gallon of fuel
(or 7.5 ml of stabilizer to each liter of fuel)
EE.book Page 7 Tuesday, June 17, 2008 9:00 AM
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10-2
10
Engine:
Engine type Liquid cooled 4-stroke, SOHC
Cylinder arrangement Forward-inclined single cylinder
Displacement 686.0 cm
3
Bore × stroke 102.0 × 84.0 mm (4.02 × 3.31 in)
Compression ratio 9.20:1
Starting system Electric starter
Lubrication system Wet sumpModel YXR70FSP2Y
EE.book Page 2 Tuesday, June 17, 2008 9:00 AM