Yamaha 2 stroke gear drain screw torque

[HMK]

Any idea if there is a torque value for the gearcase drain screws on an 86 150ETXJ? I snugged them up after the last oil change and after running the season they were loose. No water in the oil though. Does the 2stroke vibration cause this? Thanks

 

[robert graham]

Maybe those red fiber washers compress a bit and could use a re-tightening occasionally.....although I personally have never had any issues with these drain screws getting loose. I do tighten them down pretty darn good with my gorilla screwdriver.

 

[boscoe99]

 

[robert graham]

Are the new black gaskets neoprene or similar rubber?.....

 

[boscoe99]

Black gaskets don't seem similar at all. Appears to be a harder type of plastic.

 

[HMK]

Maybe those red fiber washers compress a bit and could use a re-tightening occasionally.....although I personally have never had any issues with these drain screws getting loose. I do tighten them down pretty darn good with my gorilla screwdriver.

I have 2 motors, 150, and a 15 kicker. I tried the red washers on one and a black washer on another and they were snugges down pretty tight. Just curious about the vibration.

I have never had this issue on my I/O.

 

[HMK]

View attachment 327905

Good information, I'll give it a try. Thank you.