farmerj
Platinum Level Site Supporter
Does the vacuum tube go throught the wiring grommet and do you use some sort of fixing to pass the tube through into the ignition mechanism? Like on the Slavens racing ktm wet mod where he uses a brass fixing?
Most guys here drill a hole on top of the housing and tap it for a fitting, which can then have a hose attached to vent up under the tank.
But I did as you suggest - I used a small plastic fitting that has barbs on each end (in this case, a drip irrigation connector) and pushed one end through the rubber wiring grommet, being careful not to damage any wires. So it can be done without drilling the housing.
You might be able to insert a short piece of metal tubing through the grommet (to which you can add a piece of hose) and accomplish the same thing.
fwiw,
Jeff