OutdoorKing Repair Forum Forums Finding and Swapping Rare Finds & Donations VICTA 500 TWIN CYLINDER

As long as it has the hole for it, yep, there is 3 caps, one like that one, one the same, but without the knob, and one with a big hole, and a plug.

there is only one size speed adjuster knob, so it should replace any missing speed adjuster knob.

Sounds like I need to find some carby's as I don't have any spares here.I don't know why I don't, I use to have about 4 or 5 spares.Can't for the life of me remember what I did with them.All I do know is I don't have them now.

For the time being you could just go to a mower shop and buy a new diaphragm cover and new digaphram and try it.

If the cover has a crack/split/hole the govenor will not work propperly.

Got a pic of the diaphragm itself?? I might be able to give some advice.
Quite often they are not sitting right when the cover is put on and they tuck up inside the body of the carb. The motor wont run right as its then a vacuum leak.
Then the diaphragm sets like that. With some warmpth and gentle stretch some of them can be saved.
The type, thickness and profile of the diaphragm and the tension of the springs etc is what makes it go right. Starting from scratch with a box of odd carb bits can be a dead set nighmare.



The fuel gauge caps. They go white if theres any ethanol in the fuel. I pulled one out of a mower i got here and the plastic was all cloudy and soft, that soft that a tear drop had formed on the end of it. Had ethanol fuel in the tank, stinking stuff. A day in the open air and it was hard as a rock again but still all cloudy.



Make your sparks work first.
Check things, get new plug boots. The screws in the HT leads might be a bit corroded, you can clean them up with some sand paper. 2 new spark plugs. See if you can get some good saprk again.


Gont be distressed about the problems. You have the biggest problem sorted, that is the catcher, looks like that one is in very good order. Ive seen a few twins up for sale, 9 out of 10 dont have catchers.


Bob.

Thanks for that Rob,there is some good advice there.I think I may have solved the carby problems for now.I have a victa corsair that I but in another post as I can't decide to fix or wreck.I think for now it will lose it's carby as I just looked at it.It has the same carby as the one on the twin.It is in much better condition so I think for now at least the twin gets that.Yes I do believe you are right the catcher.It is in fantastic condition,with only two very small cracks.The plates inside have no rust.I wonder if it was a replacement catcher as it is still very clean.I was president in getting one with a catcher.Plenty without but lets face it, it does seem to be the hardest part to find.

Ok I have spent some time today rebuilding a carby.[Censored] the old one was a mess,I believe the new carby is classed as an LM.It did come off a later model mustang that I wrecked for parts about a month ago.Still not getting the engine to fire.([Censored] [Censored] [Censored])Going to pull spark plugs out and give them a clean and check the spark.Could it be the condenser (or is it some kind of resistor on these)that is causing the weak spark? I really want to get Goliath going again.

Happy happy times. Goliath lives!!!! Alright!Still looks like I have some teething problems.Seems like the carby isn't quite right.I got it run but I couldn't stop it.I don't know how the kill switch works due to I guess it's not a twin carby.So there is only 1 wire at the carby.So does anyone know how the earth lead works on the twin? How does it kill the engine?Other than that I think it will alright after I give it a bit of use.It's good to get it working.At least I now know it works. Woo hooo.Thanks for everybody's advice,I wouldn't have been able to get it going without it. Thanks guys and or girls.

On Ya Blumbly! persistance pays!

Yes well it certainly did in this case.I love the sound of it though.I knew it would sound different than a single cylinder,but I didn't think it would sound as cool as it does.When you hear on say you tube they don't sound much different but wow heaps different.Glad I decided to get one now.

Ok I have run the twin again today.I have found that it will not rev.I have scratched my head so much that I think I'm getting a bald spot there.Can anybody help me? What have I done wrong? Yesterday I rebuild a carby.No it is not the original I don't think it had the original to begin with.It has a rebuild LM carby.With the idle adjuster.


Have added some pictures of the carby.Please help if you know what I can try.I'm at a lose.Thanks in advance.

Ok don't know if you can put videos on here or not but here's the address to the you-tube video of my twin.Only idling not revving cause it just won't. Again any help is much appreciated.

That's it I'm over it.Anybody want a twin?I have spent nearly all day on it serviced two carby's and now it just won't go at all.Surely I'm not that much of a dumb arse to get it wrong three times.As I serviced the twins carby as well.The carby that came with the twin no go.The LM carby I build would start but not rev and the last carby another LM no start.What am I doing wrong? Somebody please help before I sit it in the middle of the yard and burn it all.I'm just that p#*sed.I have spent all day on it.I feel I have wasted the hole day.For something that just doesn't want to live.

Sounded to me like it was idling fairly high in the video.

Have you got the cable clipped into the rotating valve propperly???
Flick the cover off, peel the diaphragm back and check that its rotating when you move the throttle lever.
Check that its rotating all the way to the full open position. If its not, adjust the cable.
Ive also seen the plastic lug up in the air fitler housing that will not grip the cable, so when you move the throttle the inner and outer slide together.

If it wont rev, have you got the correct springs in it?? What have you swapped and changed??
The springs,
The spring under the diaphram cover pushes the poppet in to let more air in, and make it rev. If it wont rev or its not revving very hard it could be that this spring is not stiff enough. Air suction pulls the diaphragm back to govern speed.
The one under the diaphragm holds the poppet back/pulls the poppet shut. The Start wheel rotating will make the spring push back harder against the diaphragm to shut the valve or let off tension to let the other spring push the valve open.

Is the three legged star warped?? If it is get another one.
Do the legs of the star slide freely up and down in the body of the carb?? If they dont, file/sand paper them back so they do.


Is it flooded??? Engine off, fuel off. Its the number one Victa rule.
The fuel taps when stuffed can leak through the tap. Leave the line off the carb with the tap off and, you will soon get an idea if its leaking or not. I had one doing that yesterday. New tap is $6 from Bunnings.

If you are not sure if its flodded, rip the plug out and see if its wet. Pull the face off the carb and pull the motor over 10 or 20 times. Then put the face back on, turn on the fuel and keep pulling till it starts without priming. If it wont start at all its running lean.

Are you sure the jet is not blocked. Ive had them where you can get carb clean and air to blow through them but they wont make the motor run.
If you can get it to 'cough' a bit but it wont quite catch on, it my catch on if you keep pumping the primer. Its a good indicator that the jet or emulsion tube is blocked partly.


Every Victa carb is different. They are all the same (well they are not) but they are all different. Call it personality. Some work perfect, others wont idle, or idle so low they stall. Others wont start in the 'start' choke position, but will catch on straight away if put down to run. And if you want them to all work exactly the same its a whole lot of hair pulling and trial and error.
Hence i love a mower that comes to me with the carb on it all together just as it was the last time it ran.


Dont quote me, ive had nothing to do with the electricals on the twin. If its only got one stop wire it should have a second. That goes through as the cross pin and the other end will earth to the engine. The series 70 MKIII's (points ignition) are set up like this.






Look on the forum here, ive done a few write ups on what to do with the carbs. Theres also plenty of other info.
Im sure theres videos on youtube as well. I know there is one some young fella put up and it shows how to dissconnect the throttle cable.


The other difficulty is the Twin, markIV S70, V35, V40, etc. The carbs all look the same but you cant tell me that all these different motors work on exactly the same main jet. If they do its compensated for with the springs etc in the carbs. Mixture is a fine art.

Yeah it can get you pissed off. Its just a mower, if its winning just set it aside and do what you can about some extra info and a better attitude so you can go back and tackle it another day and kick its freakin arse.
Who cares if its days weeks or months, you will kick its butt.

Ok thats a bit of a rant, cant even be stuffed proof readin it.

Cheers, Bob.

Keep your chin up.
And dont go hitting it with anything, its not fair as it cant hit you back.

Thanks Bob yes it has got me very shirty in fact it is now back in the shed and it can sit and wait till whenever now.I just don't like working on those carby's give me a 3F carby any day. I'll fix it with a smile.I just think they are such fiddly things.I don't think I'm upset with the mower just the bloody carby. Especially after rebuilding 3 off them.I guess the biggest problem is is lack of experience with these carby's.I don't know I might get it right one day.When I'm ready to tackle it again I certainly will run through your list and check of as I go.Maybe tomorrow it will come out and be looked at again.I do feel better getting it of my chest.After all I'm not a quitter (when hopefully one day soon I will with smoking)so I know Goliath will run again.Just sooner rather than later.
Thanks again Bob.

How bout i come round some time in the next week (or weekend) and give it a look over for you, see what i can make of it?

Well if it's no problem for you then I'd be happy to make you a coffee and talk about my twin headache.I just wouldn't want to make a separate trip for Goliath.If your happy to your more than welcome.

I'm more than happy to make the trip, however, seeing as you want to the collection, do you think you will be making it around here first?

If you do come this way, before i get a chance to come that way, pop Goliath in the boot, and i can have a look then.

Sounds like a carby issue, i have a few good LM's and G4's here we could do a swap with a known good one, and see what happens.

Once you get the hang of the plastic carby's, they are quite simple, its just getting used to them, and there quirks. When i fist started with them (began on G3's & 3L's) they drove me up the wall, but once you get it, there pretty easy, and very fast to service.

I properly wouldn't be able to get out there till the weekend of the 9th and the 10th.As I think I have my grandson coming around.Don't want to travel around with him.It would be ok if you came here though if that's when you chose to come.

I hope you get it sorted soon

im still looking for that filter cap but ive been throwing heaps of things in the shed that dont normally live there in preparation for my daughters birthday this weekend, im thinking big cleanout next weekend hopefully it will turn up then, might be a long shot though.

It is worthwhile remembering on the twins that just like the 125 and 160 engines with the g$/lm carb they have their own jet size.

I wondered about that.

I bet the different jets are not marked in anyway either.


I mentioned above about a partly blocked jet. Its probably a 125 jet.