Coasters

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- billh1943

• On decel the VSV #13 is activated by way of VH #19.
  
• The VSV #13 draws air from the air box via hose #6.
  
• The air then flows thru hose #3 and #15 to the ASV's & RV's…
  which forces the air into the exhaust to help burn off any unburned gases from the cylinders.

Coasters:

• Plates to cover and seal the holes where the ASV's were.
  
• Removing the ASV's & RV's from each cylinder and installing Coasters will usually stop any popping and cracking in the exhaust on decel...
  especially with after-market pipes...unless, of course, there is some other problem.
  
• Disabling this mess supposedly makes the engine run a little cooler also.
  
• Some guys just leave this complete assy in place and disconnect the two large hoses from the ASV's & RV's and plug the ends with marbles.
  
• I chose to remove all that mess myself. It doesn'st take much time to remove it…
  then plug the hole in the back of the right side air box with a plug...
  I used a cork shaped rubber plug with a little RTV to make a good seal.
  
• I just lifted the front of the gas tank to do the job. Not much to it.

NOTE:When removing this stuff, it does not help or hinder the performance of the engine, meaning more or less HP. And no adjustments are necessary.


NOTE:
This is EPA stuff.
Vacum hose = VH - #19
Vacum Switch Valve = VSV - #13
Air Suction Valve & Reed Valves = ASV & RV - #'s 22 & 25 (Reed Valves are inside the ASV's.)




Available from Scootworks

Coasters
$39.00