Compression on 2006 Yamaha 4 stroke 60 hp ??

[goblerblaster]

What should the compression readings be on this motor? Looking at a used boat with this motor and want to run a comp test... wondering what good readings would be considered. Thanks

 

[Scott Danforth]

I would expect 120psi per cylinder

 

[99yam40]

4 strokes have higher compression than the 2 strokes, but I do not know what that F60 would have

 

[Sea Rider]

With less than 100 PSI will surely fall in the Hard to Start Category...

Happy Boating

 

[goblerblaster]

Thanks for the comments/guesses... does anyone really know what a good compression reading would be for this motor??

 

[clanton]

Probley 200 or over. Suzuki 4 strokes are about 245 some engines.

 

[raczekp1]

https://www.youtube.com/watch?v=njMPJVdkZz0&t=90s