Re: Pulse Limiter & VRO
The correct pulse limiter has a blue color on one end, the old style ones had black. You can blow thru it both ways, but if the motor "backfires", the internal reed valve snaps shut to protect the pump.<br /><br />The replacement VRO pumps are all the same, and come with different fittings to fit the various engines.<br /><br />Older motors with a 3 wire VRO alarm system will need to have the extra wire and connector to upgrade them to the more reliable 4 wire system. These are illustrated in the Parts and Accessories Catalog.