2004 Yamaha WaveRunner VX110 Sport and VX110 Deluxe Service Manual, Page 103Get this manual

2004 Yamaha WaveRunner VX110 Sport and VX110 Deluxe Service Manual, Page 103

ENGINE UNIT
SERVICE POINTS

E Compression pressure measurement The following procedure applies to all of the cylindersNOTE: Insufficient compression pressure will result in loss of performance1Measure: Valve clearance Out of specification AdjustRefer to "POWER UNIT" in Chapter 32Warm the engine up, and then put the watercraft in horizontal position3Remove: Ignition coils Spark plugs