2000 quad master 500 carb vent line

[raybob]

replacing carb,, the bigger line on right side top of carb does it just vent to the air,, cant find where to hook it up to also I want to check the oil and gear oil I checked the oil in motor and the rear end my question is looks like allen plug on left side of motor if you are setting on the 4 wheller, ps it hs a oli leak any help would be great. Ray in kentucky

[CunningStunt]

I think the allen plug you are talking about is the TDC port for you to rotate the motor when checking compression and adjusting valves.  the vacuum lines usually go to the petcock on this years bikes because there are vacuum petcocks to theoretically only allow gas into carb when engine is running.  Most of these are bypassed when they go bad or the fuel leaks into the engine casing and mixes with oil. Just plug the vacuum lines with a threaded bolt.