SAME SILVER 100.4

[fermier]

Why is engine over reving even with throttle off?

 

[tinman]

governor box issue maybe.

 

[njneer]

Why is engine over reving even with throttle off?

Roll pin broken in governor box ,be careful once they go beyond a certain point it is a total runaway only way to stop
Is to block air intake or cut fuel
Lines.
Get it look at ASAP
And don’t stat it again till it’s fixed.

 

[Mur Huwcun]

Roll pin broken in governor box ,be careful once they go beyond a certain point it is a total runaway only way to stop
Is to block air intake or cut fuel
Lines.
Get it look at ASAP
And don’t stat it again till it’s fixed.

Is it mechanical or electronic governor?


The above although most probably it’s the rack that’s stiff and not getting fully out of excess fuel or the coller on the shaft could be sticking aswell, if the spiral pin in the weights on the governor shaft was broken then the op would be collecting pieces of cast iron from the floor and looking into the engine at the crankshaft through a new access point or if a bit more lucky would have a piston with a valve wedged into it. Has anybody tampered with anything on it ir did it just happen? How many hours?

Checking if the rack moves is easy enough but unless you’re experienced with the fuel injection setup then don’t attempt any adjustments or a re start.