Where are the outlet ports on an XJ petcock?
HCP626 OEM fuel AUTOMATIC PETCOCK. The vacuum and fuel outlet port nipples point straight out towards the back of the bike (parallel to the front-to-back centerline of the bike). This is the most useful orientation for these outlet pipes, and the same as on original XJ petcocks. .
Are there any original XJ petcocks still in use?
These units fit and looks “somewhat” the same as an original XJ-series petcock, but it is a completely new unit and no component (internal) parts will interchange between an original petcock and these units. Surprisingly, these units are still made by the Taiyo Giken Company, who supplied the original petcocks on the XJ era bikes….
How does a Yamaha vacuum operated fuel valve work?
Rebuilding Yamaha Vacuum Operated Fuel Valves (Petcocks.) When the petcock is in the ON or RES positions, fuel flow is held “off” by a spring-loaded diaphragm seal. When vacuum from the intake manifold is applied to the smaller port (see pic below) the diaphragm lifts the valve seal off the seat and fuel flows (out the larger port.)
Where are the fuel outlets on an XJ bike?
Surprisingly, these units are still made by the Taiyo Giken Company, who supplied the original petcocks on the XJ era bikes…. HCP626 OEM fuel AUTOMATIC PETCOCK. The vacuum and fuel outlet port nipples point straight out towards the back of the bike (parallel to the front-to-back centerline of the bike).
HCP626 OEM fuel AUTOMATIC PETCOCK. The vacuum and fuel outlet port nipples point straight out towards the back of the bike (parallel to the front-to-back centerline of the bike). This is the most useful orientation for these outlet pipes, and the same as on original XJ petcocks. .
These units fit and looks “somewhat” the same as an original XJ-series petcock, but it is a completely new unit and no component (internal) parts will interchange between an original petcock and these units. Surprisingly, these units are still made by the Taiyo Giken Company, who supplied the original petcocks on the XJ era bikes….
Surprisingly, these units are still made by the Taiyo Giken Company, who supplied the original petcocks on the XJ era bikes…. HCP626 OEM fuel AUTOMATIC PETCOCK. The vacuum and fuel outlet port nipples point straight out towards the back of the bike (parallel to the front-to-back centerline of the bike).