Yamaha TT-R110EX Checking the spark plug, To remove the spark plug, To check the spark plug

PERIODIC MAINTENANCE AND MINOR REPAIR

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1.Panel B

2.Bolt

3.Projection

To install the panel

1. Place the panel in the original posi-

6tion, and then install the bolt.

2.Install the seat.

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Checking the spark plug

The spark plug is an important engine component, which is easy to check. Since heat and deposits will cause any spark plug to slowly erode, the spark plug should be removed and checked in accordance with the periodic mainte- nance and lubrication chart. In addition, the condition of the spark plug can re- veal the condition of the engine.

To remove the spark plug

1. Remove the spark plug cap.

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1.Spark plug cap

2.Remove the spark plug as shown, with the spark plug wrench includ- ed in the owner’s tool kit.

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1. Spark plug wrench

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 the vehicle is ridden normally).

NOTE:

If the spark plug shows a distinctly dif- ferent color, the engine could be oper- ating improperly. Do not attempt to diagnose such problems yourself. In- stead, have a Yamaha dealer check the vehicle.

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