1994 bandit 150 with a Rockford 5-tt PTO-clutch. At the engage lever a small tube with a grease fitting is hanging out. Question is how often and what does this fitting go to. I have been told to grease it at least 3 times a day if running it all day. Also have heard if over greased it can ruin the clutch. Any info I have never seen this type or fitting on any other chipper before. It's power is a ford 4 cyl gas.