8-1784. Insert the tailpipe into the muffler and align thebolt holes.5. Install and tighten the bolt.WARNINGEWB02340Do not start the engine when cleaning thespark arrester, otherwise it could cause injuryto the eyes, burns, carbon monoxide poison-ing, possibly leading to death, and start a fire.Always let the exhaust system cool prior totouching exhaust components.EBU23940Adjusting the carburetorThe carburetor should be checked and, if neces-sary, adjusted at the intervals specified in the peri-odic maintenance and lubrication chart. Thecarburetor is an important part of the engine andrequires very sophisticated adjustment. Therefore,most carburetor adjustments should be left to aYamaha dealer, who has the necessary profes-sional knowledge and experience. The adjustmentdescribed in the following section, however, maybe performed by the owner as part of routine main-tenance.CAUTION:ECB00480The carburetor has been set and extensivelytested at the Yamaha factory. Changing thesesettings without sufficient technical knowl-edge may result in poor performance of ordamage to the engine.EBU24000Adjusting the engine idling speedThe engine idling speed must be checked and, ifnecessary, adjusted as follows at the intervalsspecified in the periodic maintenance and lubrica-tion chart.1. Tailpipe2. Spark arrester
