I started playing with a couple of Chondas today fitting new carby on each one that I had bought from different suppliers. I couldn't get the first one to work because when running the governor was pulling the throttle wide open, gave up and moved onto the second one. Fitted it and ended up with exactly the same problem. Sat there looking at it for some time and looking at one of the original carbs I noticed that the plastic piece the governor rod clips into was operating from the opposite side of the butterfly. I removed the butterfly and fitted the original shaft and they both now work fine. As these carbs require the governor to operate in the opposite direction I can't see what motor they could fit except something where the governor was on the right hand side of the motor. Anybody come across this before ?
I can’t say I’ve seen this before as I’ve only played with 3 horizontal shaft chondas. I assume your talking about vertical shaft motors? I did have great luck pulling the carbs down and giving them a clean in my ultrasonic cleaner though. Not sure if you’re replacing them because they’re so hard to clean, or just broken. I’m sure the replacement carbs are cheap enough to justify buying new ones off eBay or wherever.
Hi John yes these are Vertical shaft ones that have had ethanol in them so the carbs are all rusted up so replacement was the only option and at about $12 each well worth the risk. I have both of them working now, so at least in the future I know what has to be done. There was also choke issues but I won't go into that at the moment. BB should be happy I have a couple more Lawn Beetles up and running
I tried cleaning a Tecumseh carb off a victa (don’t know the model) but the emulsion tube wouldn’t come out. Long story short bought an eBay carb for about $12, worked a treat. I feel the same, definitely worth the risk.
Maybe the butterfly got installed wrong. I have done it a few times here on Briggs carburetors but have always caught myself before install. And now pay closer attention to install of the butterfly if I pull it to work on or replace the shaft.
As side note some butterflies have a beveled edge for better sealing so be careful on re-installs.
Hi AVB, it isn't installed incorrectly, the top with the stops is completely wrong, it is designed to operate in the opposite direction. For some reason I had to file both butterflies in the same area to allow them to close. Anyway it ended a happy day.
Then it sounds someone got their wires crossed and is superseding to the wrong part.
Now I had one case where the OEM was sending out a carburetor with the wrong choke butterflies. I had a fail leaf blower carburetor that had a main nozzle failure that required replacing the whole carburetor. The carburetor choke bleed hole was way too small and cause immediate flooding upon starting and old butterfly was not restrictive enough. I ended enlarging the new butterfly bleed hole halfway between the new one and old one. Ryobi insisted the new carburetor setup was correct. With Ruixing 2 cycle carbs here we not able to get part for them.
Anyway it sounds like you lucked out finding a solution that worked.
Hi Max, that is interesting, I wonder how they have done that, looks like I will have to hunt down one of those Scott Bonners just to see how it works. Both those carbs are on the left side of the motor the same as all Chondas I have seen. How can they get the governor to operate in the opposite direction?
Hi Norm, that Miller Falls mower in the pic has been messed around with a lot,it had a Honda starter so I checked a complete original Miller Falls mower and the carbys are the same as the Scott Bonnar.
I checked an Aldi mower carby and it was the same as the one on the incomplete Miller Falls mower , so someone has fitted the wrong carby on that one.
The governor will work in the same direction but depending on what side of the throttle shaft the linkage is attached to,one way the shaft turns clockwise and when the linkage is on the other side of the throttle shaft the shaft turns anticlockwise .
Hi Max the one in the last pic on the right is what they were and I had to convert them to like the one on the left, all seems a bit odd. I fitted a new carb on a Honda self propelled over Christmas but I didn't take any notice of the way the butterfly worked, I just fitted it and it worked no problems. I have a couple of Hondas here so I will look at those carbs tomorrow
I get a lot of mowers AVB where people have a go at fixing them but just fit any part they can find , like this briggs 3.75hp with a Stihl coil.
The Ryobi chain saw in the briggs pic someone put the chain on backwards so they threw it out.
Found that carby you mentioned Norm on a horizontal crank shaft, Chonda pressure washer motor (6.5 hp) and this 5.5 hp horizontal shaft Chonda in the pic below.
So there you go Max, these carbys must be for horizontal shaft motors, not what the sellers claim them to be. Did the Briggs run? if so I must give them a lot of credit for that.
Yelp Max I see a lot of this mismatch stuff too. I still get kick out the out that came in with the bar blade duct taped on. Things like this is why it takes so extra time to straigthen out a piece of equipment.
Norm Briggs have used them I have seen it yet but all I get normally is the older stuff and I don't see many chondas as most here are avoiding them except the Harbor Freight ones. Even those I can't get many parts for. More of use it until broken and replace the whole engine.
AVB, we don't have Harbor Freight, we have Aldi and for a while we had Masters, their cheap mowers are a use and throw away type. The ones I have a little more respect for now are the Sanli Chondas, no idea who is bringing those in, they seem a lot more robust than the other stuff.The Sanli Beetle was a bit stupid with the plastic body that to adjust the height you had to remove the wheels, but I have got a bit more respect for the motors now, I used to just stack the mowers up in the corner. Some of the other cheap ones are really appalling and small cc stuff
Haven't seen blades stuck on with duct tape before AVB, had plenty of mowers where the owner decided it was a good idea to weld the blades on.
No Norm the Briggs will never run with a coil that does not have the same dimensions as the original coil, even if it had a spark the timing would be out.
Ok so a slight digression from this is something that happened today. A couple of blokes brought over a Chonda for me to look at, it had oil spots all over the front of it. It obviously had not done much work. I checked the oil several times and it sort of showed half way up the dipstick but it was a bit hard to tell. I decided I had to drain it and put the correct amount of oil in it. Draining the oil it was obvious it was mostly petrol. Asking about it the mower had been borrowed by a couple of friends. Question is did one of the friends put petrol in the oil or did the float needle fail and dump the petrol in the sump?. If the float needle did fail it is the 3rd Chonda/Honda float needle that has failed recently on me in the last couple of weeks
Repairs like this does comes in batches at times or at least they do for me. Since I am working ATVs, last year I had three come in one week all with bad starters. At least I had stocked the starters a few weeks earlier due to a sell at my vendor. When I first started doing repairs for others I ordered starters for Briggs and it was nearly 5 yrs before I replaced one then last year I replaced 6 in one month. I been at this current business venture for 10 yrs now but I have been doing equipment repairs for 40 yrs so I know things comes in batches, go away for years, then one day it starts again. I had one very difficult repair that I made notes for and it was a good thing I did as another one show up 10 yrs later with the exact same problem.
As carburetor problems I might several with a month with the same problem. I just repair them as they come in and don't worry about it.
Norm the more you work on equipment the more you will see things like this as these things are mass produce so a borderline part maybe installed in several machines during production. For example the Lincoln welder/generator that I repaired last week. The customer had a starter solenoid (relay to me) to fail. He buys one locally and install it. He still had the same problem of no start so he called me in. I checked the new part and it was bad so he had to exchange it. Guess what the exchanged one was bad too. I ended up installing one I had.
Really depends on how the engine was sitting. If level most times they out the air box but in but if tilted just can fill the crankcase. I know Honda's engines are bad to seep during storage which is why they a fuel shut off valve most times. So BigTed I would be carefully betting my last dollar.
Most times I would pressure test the carb to be sure as that definitely rule out seepage and point to an operator problem.
BT, that was the first thing I put to them and they didn't seem surprised at my suggestion. AVB I also had one the other day when I too the top off the air cleaner the throat of it had 1/2 inch of fuel sitting in it. It had hydrolocked the motor so when I removed the plug and pulled it over the fuel sprayed out 2 feet. I have been doing this sort of stuff for nearly 60 years and you never know what trick is going to catch you out on the next thing you work on The crazy thing with these it is cheaper to buy a complete new carby than to buy a replacement float needle
yes we are finding carbs cheaper than repair kits too for several engines. it seems everybody is buying Chinese clones or oem carburetors out china. Honda engine does have pricey needle valves as does the Kawasaki. we just got adjust to changes. it like at one here we could rebuild most car parts and now you can only get a rebuilt part or new. they are not allowing us parts to rebuild; they to send it to some factory now.
yes the seepage can hydro lock the engine of fill oil; just depends where the ring end gaps are position and how fast the seepage is.
even though we techs know better.
