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

I have a couple of 125 mowers that I'm thinking of fitting LM carbs to to see how they perform. I have found they work very well on the early pre G4 full cranks. Any thoughts or suggestions?

Considering the later 125s had the G4, it should go fine. However, they did need a different size jet - its got 2-3 rings on the face.

By the way Norm, that Sunbeam 160 looks great - if only I were in melbourne. Has year of life left - and a bargain

Yes Tyler the Sunbeam is a good mower and my son picked up another catcher for it this afternoon, it starts and runs very well. I don't bother putting them up for sale if they are not right, no point if you are giving a warranty on them, I don't want them coming back, the odd one comes back for some small problems but very few.

I have one of the earlier ones with the green steel cowl and G3 - good machine. You certainly can tell the quality of the deck - weighs a ton

Almost picked up another catcher as well last week - but it was cracked and bore water stained. On the plus side there was a super 24 rear wheels and axle on the curbside pile next to it

Hi Norm and Tyler,

I can see a problem finding 125 cc jets ,I guess you can modify the the 160 jet to make it fit the 125.

Yes the Sunbeam looks good even with the Scott Bonnar catcher.


Cheers
Max.

I will change the photo tomorrow as it now has a Sunbeam catcher.
Max I think you probably got the original Sunbeam catcher I had for it .
As for fitting the LM carb my problem at the moment is fitting the PT carby stub to the spigot on the 125 as it is smaller in diameter that the 160 stub. I will probably have to make up a sleve to bring it up to the same diameter as the 160
Tyler I hope you grabbed those super 24 wheels

Sure did Norm - the axle is a bit weakened at what would be the right chassis mount - must be a grass trap. Wheels are good though, with hubcaps

I drove past the catcher but then saw the axle and turned around. It was one of the last finds of the collection - along with a old ryobi 4 stroke line trimmer and a stihl fs66 that goes like the clappers (although I keep getting carbon whiskers across the plug so there must be a bit in there).

Norm I only got mowers that you didn't have plastic catchers for ,I left all the mowers with catchers for you to sell.

I wonder if it would be less work to fit a powertorque engine on the full crank base.

Victa bitsa pic below.
Cheers
Max.

Hi Max,
that's clever. What impresses me the most is that the starter rope looks to be angled well for left hand starting. Is the shaft too stubby?

Hi Max,

No idea what happened to that Sunbeam catcher then, no big deal. Not sure I would have bothered fitting a PT to a Makita base, big motor on a small base

Ok so what I will try is to turn out a PT inlet manifold so it is a snug fit on the 125 inlet manifold and try to hold it in place with JB Weld and see how that holds. Means that I would need to mow a lot of lawns to ensure that it is going to hold ok. Anybody have any other thoughts on holding it inplace?

And just so everybody is happy the Sunbeam now has a Sunbeam catcher

Hi MF ,that Makita 2 stroke is not mine it's one from a facebook group,so not sure if it uses the long or short shaft motor.

Hi Norm ,

The Makita mower looks like an 18 inch base ,I don't think the Powertorque would fit a 16 inch Makita base.

Now that Sunbeam looks too good to cut your grass with ,good buy for someone.

Cheers
Max.

Hi Max,
just like most of the mowers I do I usually spend a min of one day repairing them, just to get everything working properly. I know it is dumb but it keeps the mind working

Hi Norm,

I probably would have made an adaptor in the lathe and bolted the 160 full crank manifold to the adaptor then
clamped the other end to the barrel spigot,it would save time in testing.

Not sure if the JB Weld would come loose over time it won't hold a car diff together .



Cheers
Max.

Hi Max,

I'm surprised the JB Weld held as long as it did, it is good but can't perform miracles. I don't have many 160 F/C manifolds to play with and the ones I have I need but I have buckets of PT ones. I have been using the PT ones on the 160's I converted but the 125's having the smaller spigot are giving me a new problem. I did think of doing the split adapter as pictured and I may still go that way but I will try the JB Weld if for no other reason than the fact it might work.

Hi NormK,
try anything but that. My instincts say to use compounds for mending only, not as an engineering solution itself.

MF
it is being used as a glueinside a snug fitted sleve so it has no structural requirement whatever, silicone would probably work just as well

In that case it sounds like overkill then. Why not a section of hose? I don't like the idea of using compounds that can't be removed later on.
It just bothers me.

Too late MF, only reason it would need to come off would need to come off is if the bore was damaged and that would be the end of it anyway.