2002-2006 Yamaha SX Viper 700 Series Snowmobile Service Manual, Page 300Get this manual

2002-2006 Yamaha SX Viper 700 Series Snowmobile Service Manual, Page 300

YAMAHA POWER VALVE SYSTEM (Y.P.V.S PRE-SEASON CHECKS Remove the cover INSP ADJ Check if there is any freeplay on the Y.P.V.ScablesNo
position Check that the warning light and self-diagnosis warning indicator, lights upDoes not light up Light up Does the
warning light and self-diagnosis warning indicator blink seven times in five seconds? No YesIf the valve is stuck in the
fully-closed or half-opened position, the diagnosis function may indicate faulty servo motor The Y.P.V.Sis okAdjust the idle
speed to specification Refer to "SELF-DIAGNOSIS" in CHAPTER 8 S If the valve is stuck, inspect it and then either remove
any carbon or reassemble the valve, refer to the "YAMAHA POWER VALVE SYSTEM (Y.P.V.S" in CHAPTER 5S If the valve is not stuck,