OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Victa Two Stroke Engines Kill Switch on LM Carbs - Design Issues ...

NormK, Could back off from the carburetor a little so the picture would be in focus and re-post it.

Thoroughly agree. It's hurtng my eyes to look at it.
Does your camera have macro mode? Most digital cameras do.

Sorry, too late again, it is fitted and now working on a mower as it should. All it is is a 6mm screw through the kill switch hole to use as the stop and a 4mm screw through the stop to prevent the lifter from going over the top of the cam when it comes up against the stop, this way I can adjust the screw to suit the top of the cam. With the LM cam I just grind out the ramp with the die grinder till I get the lifter in the right spot, this is a bit more fiddly. I will do another one and see if I can get a better pic, not sure I can though

This pic shows the adjuster screw fitted in the can so that it can be adjusted so the lifter can stop at the highest point and not drop down. Sorry about the pic they look fine on the camera, but once they are blown up here they get a bit fuzzy and I wanted close ups so you could see what I was doing. They work perfectly and will never jamb up again, with smooth cable operation

Thanks , that looks clever. Pity you can't put up a video, showing first hand how it operates. Maybe if I pull one apart myself, I will fully grasp the concept.

Cheers.

Mowerfreak, I did another one yesterday, got so sick of fighting the dumbest idea in the world, fitted the stop bolt, , dremel out the ramp so the lifter can't drop off the top of the cam in the stop position, this way I don't have to use the adjuster screw by using the LM cam,set the idle screw to exactly where I wanted it, fitted an external kill switch, and I think this is the way I will do them in future, sick of the stupidity of that insane kill switch design. This mower was a typical Victa non starter when the bloke brought it over a couple of days ago and with only the carby modifications it is now a one pull starter and should be a good mower without problems for at least another 20 years. My son is here from NZ so a vid is easily on the cards if somebody wanted to see it. so easy when you know how and it makes these carbys bulletproof. My belief is most of these mowers with G4 LM carbs were all dumped because of carby issues because nobody knew how to fix them. I can do them with my eyes shut, and I can guarantee everyone of them will work.

Mowerfreak, what is it you want a video of the whole modification process of the carby from start to finish, there is quite a few steps involved?

That cam screw and what it does, idle adjustment bolt, and kill switch by pass showing how you seal off the old kill switch portal as well as showing what you do to the kill wires.