OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Victa Two Stroke Engines G3 carby setting governor

You could run the engine without the cowl, for a little (not to long though, the cowl is important for cooling) but you will not get a good idea of the carburettor operation, as the govenor plays an important role in this.

I can help you out with a few things for this though, I will PM you more.

Sorry To hi-jack this thread but it seems the most appropriate for my issue.
So my Buddy turns up at My place with his old Victor 160 Corvette, a non runner and asks me to fix it.




New Plug, fires straight up, BUT throttle works in reverse sense, I.E. pushing it forward, revs reduce to Idle, pulling it back, revs increase to Max.




Closer inspection reveals a G3 carbie, so download the relevant docs, set it up, as per earlier on this thread, and Voila.. exactly the same.... which didn't surprise me as that was exactly what I expected from how it is rigged. Now i'm a modest man, but I think I'm a pretty good engineer, and this set up just makes No sense at all. I fully understand that the throttle doesn't control the butterfly, but only the spring tension, but regardless, pushing the throttle lever forward is only ever going to INCREASE the tension in the spring, and make it HARDER for the butterfly to open, and EASIER for it to close.... i.e REDUCE the revs.







I took it apart again and studied it for two hours..... it is possible to reverse tension the spring, but that doesn't work.
The butterlfy cant be installed the wrong way around..... so maybe its the wrong throttle lever for t his mower??.... but I doubt it... what am i missing, its driving me crazy....

meantime mower works absolutely fine..... in REVERSE sense of lever

HELP!!

Yep, definitely a mismatch between the carby and throttle control.

One giveaway is the stop switch wire going to the throttle control. This setup is pre-G3; all G3 carbies had the stop switch in the 'throttle connector' arm, as that one does.

Victa carby diagrams: https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=11468

I'd suggest that the machine has been retrofitted with the G3 carby at some time, likely due to parts availability. The throttle control/air filter is probably original.

Some more detail: https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=47903#Post47905

The G2 carby is P/No 3-260; the G3 is 3-335 - that list shows different throttle controls and cables for the two carby models.

the vane is facing the wrong way around. the engine spins clockwise and blows it.

Incorrect. That is set up by the manual, with the vane blade lined up with the top screw of the gear cover plate, at fully closed throttle.

Edit: https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=23929 has some more info on Corvettes, but it may not be 100% correct for the 1969-72 models, with respect to air cleaner/throttle controls.

Long air cleaner [top-opening] + separate throttle control [both VC-160 type] is correct for the G3 carby on the Corvette. That's what's shown in the pic in the second link in my earlier post.

ok yes checked my corvette has the g2 carb

That looks to be a 3L. The G2 was the first Victa governed carby, with the metal vane.

yes correct again .my brain is not functioning at the moment . i only bought a g2 the other day so i should know better