40HP yamaha linkage screws

[Randyz71]

I have a 40 yamaha 2 stoke, cleaned the carbs but cannot get linkage screws to loosen to try and synchronize. about t0 strip the phillips heads out. any recomendations?

 

[Sea Rider]

Soak the screws threads wth penetrating oil and check if possible to introduce a small pressure plier to grab the phillips head to loosen or remove.

Happy Boating​

 

[robert graham]

Buy a can of Freeze-Off rust penetrant at Auto-Zone or similar auto supply store....it uses very cold co2 blast to loosen screws,bolts and fasteners.....