OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Victa Two Stroke Engines Victa governor nozzle

Hi all,

Fairly new to this, however this is my first 2 stroke so picking up bits and pieces from YouTube and here.

My dilemma is that I can't seem to get my V160 PT Tornado Classic to rev to full rpms. I initially had the problem that all it would do was over rev and I had to limit it with the throttle lever but I'd come to terms with that.

After adding 2 brass washers to sort the high idle, it seems ive done something to limit it's max rpm. Haven't read anything to suggest that the washers affected max rpm, only assisted in lowering the idle.

From idle moving the stick to full, it revs up to what id consider full rpm then sort of settles a bit lower and thats as high as it goes.

Before this issue, I've replaced the following, stupid me did this for maintainance sake but obviously Ive done something or uncovered something.

Carby needle, faceplate with bulb, seal
Intake seals, both ends
Starter seal
Air filter
Plug
Governor spring

I checked the vacuum governor nozzle and hose and its clear of obstruction, cleaned and checked the decompression valve also. Hoses are in good condition, no leaks. I did try a snipped red spring while it was over revving and it didn't seem to change, however haven't changed it back to that spring to see if it actually makes a difference now as it didn't before.

The governor nozzle is a CR03727A, and its got a pretty small inlet. Is it supposed to be this small? The outdoor king CR03727A sale ad says to drill it out 7.5mm, that size is bigger than the intake so im a bit confused.

Any help would be appreciated.

Hi Zenny,
just a thought once you put the washers under the lifter it makes it hard to get the cable back into the second notch where it enters the carb body. If it is in the first notch that can lower the revs slightly.

It did make it hard to get in, I got it into the second slot this time around. For some reason the cable had like a bend in it and after seeing that new ones have no bend I straightened it out. Also noticed with that bend at full throttle both notches in the cable holder that it wasnt reaching full throttle. I amended this, checked the throttle at full rpms was opening all the way and was still having the lower rpms.

I pulled the engine off and inspected the governor nozzle and it was actually a bit blocked up. Have cleared it out and re assembled but not tested yet as was too late last night so will try this afternoon. Blow through test wasn't enough but we'll see if this makes a difference.

Hi Zenny,
because you have put the washers under the lifter it causes the cable to bend when you have to force the cable into the second slot. How I solve this problem is to use a hacksaw blade and extend the slot in the housing where the cable comes through to the 2 clips that hold the cable in place. This makes it easy to get the cable in the clips and doesn't bend the cable

I'll keep that in mind next time I'm in there. However for the time being, I ran it up this afternoon, red spring and chopped spring rev to same rpm. No change. Removed govenor nozzle, and ran it and it runs perfectly, full rpm is over rev but it has full rev range so I'm still suspect that the governor nozzle is the issue. Did I read correctly somewhere on here that you have cut the red spring in half and used that on either side of the diaphragm instead of using the governor vacuum system?

This is how small the hole is on mine.
I've seen second hand ones that had some of that cut away, not sure if this ones meant to be the same.

PS. This was before I removed it and cleaned it out.

Hi Zenny, yes I just cut the spring in half and use that on each side or I use the original half spring on the lifter, cut the big spring in half and use one half of it under the cap depends on how I feel at the time

Does doing that allow you to put the throttle to full and it doesn't over rev? Or do you have to limit the throttle stick not to go all the way down?

Hi Zenny,
It makes no difference to the revs, what controls the revs is how far the cable pushes the lifter around and doing so allows the poppet to open more and this controls the revs. Not sure if over revving a Victa is an issue, I have never seen a Victa 2 stroke with a thrown rod

Yeah fair enough, I tried your two half red springs method, still just runs off its head. Ill probably get a tacho to see how high its going but if I can't fix it, probably shove it in the corner until I come across another to either plays swapsies with parts or engine swap it. I regret doing preventative maintenance on it cause it was running great (allegedly not running before it was handed to me) once I put some fuel in it, just needed the bulb and seal replaced and I probably could have got away with it. Last time I pull one of these apart 😂😂

The only way it can rev its head off is the poppet is not closing, if it the shuts the motor will not run, that is where your problem is. they are a simple carby, only problem I have with them is float needles

Only runs off its head when throttle is set to full throttle. I have full control of it pulling the throttle back and it idles great. This is with no governor connected by the way. With the governor connected, it under revs at full throttle, still also have full throttle control through the range making me think the governor is the cause. Same results with your split spring method also which I was really hoping would work, but unfortunately if its not running perfectly I'll either keep at it until it works or give up. Unfortunately in all my fiddling ive snapped off the carby end of the governor cap so will need to order that. I haven't done a diaphragm yet or the short spring so will replace those too.

I just plug the governor spigot off and just use the throttle control to control the revs. The reason they fitted governors to the mowers (you are hanging onto the handelbars so why not use the throttle to control the revs as needed) OH I forgot all the other 4 stroke motors will throw a rod if you rev them to hard so they have to dumb everything down so the dumb people of this world can use a motor mower

Actually that's probably what I needed to hear. I never plugged the vac from the carby, I just left it. Probably the free air its just letting the engine pull the diaphragm open because there's no governor vac to balance/ control it. Once I replace the cap, ill cap it off and see how we go.

Just plug the hole in the cap with silicone