2006 YAMAHA T135 Owners Manual

Page 41 of 84

YAMAHA T135 2006  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
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6
To check the spark plug
1. Check that the porcelain insulator around the center electrode of the
spark plug is a medium-to-light tan
(the ideal color when t

Page 42 of 84

YAMAHA T135 2006  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
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6
EAU37570
Engine oil and oil filter 
element The engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil filter

Page 43 of 84

YAMAHA T135 2006  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
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6
CAUTION:
ECA11000
When removing the engine oil drain
bolt, the O-ring, compression
spring, and oil strainer will fall out.Take care not to lose these parts

Page 44 of 84

YAMAHA T135 2006  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
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6
CAUTION:
ECA10420
Before installing the engine oil drain
bolt, do not forget to install the O-
ring, compression spring, and oilstrainer in position.
9. Ad

Page 45 of 84

YAMAHA T135 2006  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
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6
NOTE:The coolant should be between theminimum and maximum level marks.3. If the coolant is at or below the minimum level mark, remove cowl-
ing A. (See pag

Page 46 of 84

YAMAHA T135 2006  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
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6
NOTE:
The radiator fan is automatically
switched on or off according to the
coolant temperature in the radia-
tor.

If the engine overheats, see page6-36

Page 47 of 84

YAMAHA T135 2006  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
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6 4. Insert the air filter element into the
air filter case.
CAUTION:
ECA10480

Make sure that the air filter ele-
ment is properly seated in the
air filter

Page 48 of 84

YAMAHA T135 2006  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
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EAU37520
Adjusting the engine idling 
speed The engine idling speed must be
checked and, if necessary, adjusted as
follows at the intervals specified in th