Saito FA-80 Four Stroke

[7bikerboy7]

Cool vid...I have a question...Im now breaking in a os fs 120III 4 stroke. The instructions say i dont need the line from tank to muffler, what do you think?

[wilkiefive]

@7bikerboy7 no unless its up side down

[7bikerboy7]

Cool vid....I have a question.i just bought a mustang with 4 stroke os 120 with spiiner and when i was trying to breakin the engine i seemed to have stripped the back part of the spinner backplate now theres not much for the engine to grab onto.Whats the fix for this? should i tightn the nut extra harder to keep the prop from moving?

[mastmar]

I assume you have a good quality spinner... Since the motor shaft is hardend steel, I crank the nut as tight as I can with a standard prop wrench. I just about crush wooden props. Yes! tighten it extra hard.

[maxadventure]

prop size and RPM? sounds nice and steady...