Briggs and Stratton - no reaction to throttle cable position

[reb78]

I have just put a spare engine on an old hayter. It is a vertical shaft for the blade but slightly unusual in that it has a vertical shaft driven off the crank to provide drive to the rear roller. If it wasnt for this I would have stuck an old Honda engine on it by now and wouldn't need to post.

Issue is that the throttle cable is set correctly but I am only getting marginal adjustments to engine speed by moving it. The engine runs fine, cuts fine but is either at start (choke) position or full throttle. It does not race and does not bog down easily so I think the governor is working fine. I can slow the engine speed by adjusing the idle speed screw, then it will react more to the throttle cable but the top engine speed isnt high enough. I am struggling to find a pic to verify the governor spring positions are correct. The throttle butterfly is free moving and choke moves as it should.

Engine code is

12K682-0116-E1​

Any ideas?

 

[reb78]

This is how I have it setup. This was a working carb on another engine (same type) that has failed internally.

 

[gaz1]

would this be yours

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mine has this on it

but it also has a lock bar where that right bar moves

 

[reb78]

Same engine as the harrier 48 Gaz. Mines the Harrier 56 but that engine type is the same.

I need to take a closer look on a PC later but I am not sure those inatructions quite go into the detail of governor spring positions. Hope they do.

Very different carb setup to the one in the video I think so hard to compare component positions. That one is more common.