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8-59
EBU00326
Rear brake adjustment
Brake lever free play should be 5–8 mm. Turn
the adjusting nut on the brake hub in direction a
to decrease play, and in direction bto increase
play.
w
Operating with improperly serviced or adjus-
ted brakes could cause loss of braking abi-
lity, which could lead to an accident.
After servicing:
8Make sure the brakes operate smoothly
and that the free play is correct.
8Make sure the brakes do not drag.
Replacement of brake components requires
professional knowledge. These procedures
should be performed by a Yamaha dealer.
a
q
b
a
a. Free playa. Jeua. Juego
1. Adjusting nut
1. Dispositif de réglage1. Dispositivo de ajuste
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EBU00805
Lubricating the drive chain
The drive chain must be cleaned and lubricated
at the intervals specified in the periodic mainte-
nance and lubrication chart, otherwise it will
quickly wear out, especially when riding in dusty
or wet areas. Service the drive chain as follows.
cC
The drive chain must be lubricated after
washing the ATV or riding in the rain.
1. Clean the drive chain with kerosene and a
small soft brush.
cC
To prevent damaging the O-rings, do not
clean the drive chain with steam cleaners,
high-pressure washers or inappropriate sol-
vents.
8-67
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8-95
EBU00413
Troubleshooting
Although Yamaha machines receive a rigid
inspection before shipment from the factory,
trouble may occur during operation.
Any problem in the fuel, compression, or ignition
systems can cause poor starting and loss of
power. The troubleshooting chart describes a
quick, easy procedure for making checks. If
your machine requires any repair, take it to a
Yamaha dealer.
The skilled technicians at a Yamaha dealership
have the tools, experience, and know-how to
properly service your machine. Use only gen-
uine Yamaha parts on your machine. Imitation
parts may look like Yamaha parts, but they are
often inferior. Consequently, they have a short-
er service life and can lead to expensive repair
bills.
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10-2
10
Model YFM125
Engine oil/final transmission oil:
Type
Recommended engine oil/final transmission API Service SE, SF, SG type or higher
oil classification:
Quantity
Engine oil:
Periodic oil change 1.25 L
Final transmission oil: 0.6 L
cC
8Do not use oils with a diesel specification
of “CD” or oils of a higher quality than
specified. In addition, do not use oils
labeled “ENERGY CONSERVING II” or
higher.
8Be sure no foreign material enters the
crankcase.
–20° 10° 20° 30° 40°
10W30
10W40
20W40
20W5050°C
0° –10°
5W30
15W40
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10-7
ModèleYFM125
Huile moteur/huile de transmission finale
Type
Classification d’huile de moteur/de huile de
transmission finale recommandée:
Quantité
Huile moteur:
Vidange périodique
Huile de transmission finale:
Huiles de type API Service, de classe SE, SF, SG min.
fF
8
8
Ne pas utiliser d’huile de grade diesel “CD”
ou une huile de grade supérieur à celui spéci-
fié. S’assurer également de ne pas utiliser une
huile portant la désignation “ENERGY
CONSERVING II” ou la même désignation
avec un numéro plus élevé.
8 8
S’assurer qu’aucun corps étranger ne pénètre
dans le carter.
1,25 l
0,6 l
–20° 10° 20° 30° 40°
10W30
10W40
20W40
20W5050°C
0° –10°
5W30
15W40
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