OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Victa Two Stroke Engines LM carby

Since it's a mule, are you going to install electronic ignition as well? Is it a mark III? The 125 punches above it's weight. It should go well with the modified LM set up, unless it's a tired unit.

MF,
the motor is good, runs well, it was just that the carby was leaking fuel every where, I have to do another one but I haven't had that one running yet

Good job Norm....it will be good.
speedy

Thanks speedy,
I'm not into building mowers for people to put into collections with everything period correct, my aim is to build good mowers that will serve people well for years to come

Mower runs like a dream,just have to cut a few lawns to ensure the JB Weld is going to hold on although it may not have needed it as the manifold was a tight fit that I had to hammer on. Hopefully expansion will not split the plastic manifold, time will tell. Now onto the next one which I tested with an old G3 carby this morning and it fired up straight away. This one is an early Mayfair with a rocket type muffler. Put an LM on it and it will be good for many years.
My next issue will be that I might run out of PT inlet manifolds to chop up for these conversions

No surprise there. The 125 is a better motor than the 160. I have found the 125 with G4 to be more powerful than the G3 version.

MF,

I'm stoked with this pair of Mayfairs I have, my sadness is now how many of these were scrapped over the years when they had perfectly good motors but had carby problems and so they were scrapped. Every one of these I pick up has a perfectly good motor, just let down with carby problems. All these discussions about the fact we must reduce waste and these perfectly good machines just get dumped because China can dump cheap stuff here and pollution to them is a problem for somebody else
Another thing I like about these mowers is the north/south motor makes them much smoother

Sounds like the Powertorque spigot should stay on Norm ,I was thinking it may have been a loose fit and the JB weld
would be taking up the slack.

I have always found the round Mayfair blade plate makes the motor run smoother than if you fit the oval powertorque
blade plate as long as the blade plates aren't bent or damaged.

The round cutter plate must be more dynamically balanced compared with the oval plate.


Cheers
Max.

Less metal needed to make the oval plate.
My SupaSwift which has a plain round disc with Victa blades fitted cuts like a completely different mower, so thoroughly and precisely. I enjoy it 3hp Briggs and all.
I have seen the pattern of Victa always engineering to find ways to save per unit cost of production, often with obvious shortcomings like thorough rusting of their steel bases and inferior balance.

Yep research and development in the old days was to make better products now it's for how do we make products cheaper.

Hi Max,
I think the smoothness has a lot to do with the north/south configuration of the motor, the east/west setup bangs sideways every time it fires
Now I have to work out what to do with these 2 great little motors. The second one is a bit heavier to start as it doesn't have a decomp valve but they both fire up straight away. Haven't looked at the points on either one.

I have two 125 mark IVs which have the right barrels for quick and easy LM installation.