[Morris]

Just had my R-12X serviced and in the back, near the rear oil fill is a black tube with a cap on it. Neither the shop owner nor I have a clue what it's for. His shop manual doesn't show it. It's a small flexible tube, about the size of a drinking straw. Anybody know? Thanks.

 

[glockm22]

Believe is a vent tube. Does not allow pressure to build up.