2002 YAMAHA DT125R checking oil

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Page 7 of 96

YAMAHA DT125R 2002  Owners Manual PERIODIC MAINTENANCE AND 
MINOR REPAIR  ................................................ 6-1
Owner’s tool kit  ............................................... 6-1
Periodic maintenance and lubricatio

Page 48 of 96

YAMAHA DT125R 2002  Owners Manual 6-10
PERIODIC MAINTENANCE AND MINOR REPAIR
6 To install the spark plug
1. Measure the spark plug gap with
a wire thickness gauge and, if
necessary, adjust the gap to
specification.
2. Clean the surfac

Page 50 of 96

YAMAHA DT125R 2002  Owners Manual 6-12
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EC000077
cC8In order to prevent clutch slip-
page (since the transmission
oil also lubricates the clutch),
do not mix any chemical addi-
tives with the oil

Page 64 of 96

YAMAHA DT125R 2002  Owners Manual 6-26
PERIODIC MAINTENANCE AND MINOR REPAIR
6 Observe these precautions:
8When checking the fluid level,
make sure that the top of the
brake fluid reservoir is level.
8Use only the recommended qual-
it

Page 67 of 96

YAMAHA DT125R 2002  Owners Manual 6-29
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU04034
Checking and lubricating the
throttle grip and cableThe operation of the throttle grip
should be checked before each ride.
In addition, the cable

Page 69 of 96

YAMAHA DT125R 2002  Owners Manual 6-31
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU02939
Checking the front forkThe condition and operation of the
front fork must be checked as follows
at the intervals specified in the peri-
odic maint