Yamaha Outboard Oil Tank Sensor Leak

I put thread tape around the two small raised ridges about 3 wraps that are down the tube a little and around the tank lip where the cap snaps over.

Yamaha outboard oil tank sensor leak.

G3 and 90 tlrc. Its leaking oil at the reservoir tank ware i think its the low warning oil sensor. So my thought is forget tie wraps and replacement of oil sending units i want to fix this thing permanent with an external oil tank like on the bigger outboards. Troubleshooting the alarm system includes making sure the horn associated with the alarm works making sure the warning light comes on and the horn sounds when the oil level drops below acceptable levels and ensuring the warning sounds if the engine overheats.

I don t know whether it is engine oil lower unit oil or something else. I decided to also replace the drain line that comes from the bottom of the oil tank and re enters at the top of the tank. The yamaha outboard alarm system can fail just like any other system on your outboard. I am the second owner of this matching 2007 19ft.

Jan 23 2010 1. Can answered by a verified marine mechanic. Eventually the main oil tank overfills and spews excess oil out a vent tube into the air silencer box. I cleaned up the rough edges on the oil reservoir neck top and perhaps this may reduce the oil leaking from the low oil sensor cap.

Oil leak on yamaha 4 stroke outboard discussion in boats and motors started by bmagill jan 23 2010. A plastic tie wrap snugged around the rubber lip usually cures the leak. Given the head of oil above the part of the tank the sensor sits on it is no wonder this can leak. Piston picture at end.

Yamaha could do a better job of engineering this bit. While the outboard is tilted a leaking rubber cap on the main tank can result from improper assembly or from twisting out of place.