Honda GC 160 to Yerf Dog

[Mike123]

I got a go kart from my friend to put a new motor on and give it back to him fixed
It had a Tecumseh engine (that was leaked oil all over the place I think it had a cracked case) and it is a Yerf Dog go kart
I been working the go kart with a Honda GC 160 that a neighbor donated to the cause
It was a fixed throttle engine and I (think) I made it a throttled engine
I disconnected the governor from the butterfly ( carburetor) and will do a complete governor delete
Cause I believe its the only way to make it a throttled engine
Anyway as you see this a low budget operation and I used what could other engines to make work
I been working on it for two weeks I thought I be done in 2 days thats a whole ‘nother story
So right now working with what I got
the idler screw screwed in all the way the engine wont start
If I put screwdriver between the butterfly and screw —it will start right up —the only problem is it is idling too high and engaging the clutch
I like to adjust it finely to start up and idle without engaging the clutch
But it seemed like I may have to use a longer screw
Any suggestions?
Enclosed are pictures showing how I jerri-rigged it to work and it works fine except the correct idle speed
And don’t know if the original air box will fit on there

 

[Mike123]

Any suggestions

 

[flattop1]

This is a racing kart site .
You have shown some inovation and skill . congratulations .
two suggestions .
air box/ air filter provides some air restriction fit the air box assembly .
Look and see if there is a notch or hole on the butterfly near the Idle low speed fuel holes in the carb .

 

[Mike123]

Oh sorry I thought it was for go kart builds
My mistake the holes in the butterfly a taken up with the throttle return spring
And the throttle cable
I may have put a longer screw in idler screw so I can adjust the carburetor
I dont think the factory air box will fit not with modification of throttle spring and throttle cable
I have to fit a cone air filter on the carburetor
I guess if adjust the carburetor without the filter it will change when I put the filter on

 

[flattop1]

Yes air filter will effect it .
the butterfly is inside the carb , ie (throttle blade) .

 

[Mike123]

Thanks