Yamaha TT-R110EX owner manual Adjusting the carburetor, Adjusting the engine idling speed

PERIODIC MAINTENANCE AND MINOR REPAIR

3.Insert the tailpipe into the muffler, and then install and tighten the bolts to the specified torque.

Tightening torque:

Tailpipe bolt:

10 Nm (1.0 m·kgf, 7.2 ft·lbf)

NOTE:

Make sure to align the bolt holes when inserting the tailpipe.

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EAU39930

Adjusting the carburetor

The carburetor is an important part of the engine and requires very sophisti- cated adjustment. Therefore, most car- buretor adjustments should be left to a Yamaha dealer, who has the neces- sary professional knowledge and expe- rience. The adjustment described in the following section, however, may be ser- viced by the owner as part of routine maintenance.

ECA10550

CAUTION:

The carburetor has been set and ex- tensively tested at the Yamaha fac- tory. Changing these settings without sufficient technical knowl- edge may result in poor perfor- mance of or damage to the engine.

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Adjusting the engine idling speed

The engine idling speed must be checked and, if necessary, adjusted as follows at the intervals specified in the periodic maintenance and lubrication chart.

NOTE:

A diagnostic tachometer is needed to make this adjustment.

1.Attach the tachometer to the spark plug lead.

2.Start the engine and warm it up for several minutes at 1000–2000 r/min while occasionally revving it to 4000–5000 r/min.

NOTE:

The engine is warm when it quickly re- sponds to the throttle.

3.Check the engine idling speed and, if necessary, adjust it to spec- ification by turning the throttle stop screw. To increase the engine idling speed, turn the screw in di-

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