I’ve definitely gotten to a point that on cheaper items I’ll quickly get a new aftermarket carb; but on more pricey items I tend to try harder to rebuild the original carb. I know for many people it makes no difference but to me, I believe the original parts on higher priced items tend to be better quality.

I love my 4 cycle

I have a carb repair tool kit that has very small files/drill bits. I've had this happen before, selected a bit just slightly larger than the main jet hole, filed/drilled it out, and problem was solved. Surging went away, too.

Nice video. But still want to know what was wrong with the old carb? Smaller jet maybe?

Those screws on the bottom side of that transmission are removable or you can remove the bottom plate from the transmission and it doesn't have oil it has grease inside and it can be re lubricated. Why you said it was a sealed system I do not know since you could clearly see the screws in this video. I just watched two other videos on KZbin showing you how to remove the bottom of it and what to look for.

On my opi ion lets give it a try!

😂😂😂

4 pulls on an older push mower that you're going to sell isn't too bad. then again, a carb is only 10+ bucks. What's is your thought on why that carb wouldn't work right after being cleaned 2 times?

The repair takes me approx 10 min using only a 8 mm and 7 mm socket, hose pinchers, Tupperware bowl and my lips/lungs. That's on the same series engine as you have there. I do it on a daily basis on many mowers but more are quantum's and require slightly different tools.

That puts the bold in bolans lol

I had this problem with a similar mower (exact same engine). Turned out the plastic retainer ring for the primer bulb was deformed and wouldn’t seat properly, causing an air leak. I think it’s fairly common for those retainer rings to warp and not seat properly, I’ve run into it before.

I enjoy your helpful videos. But please, please ,please could you include what your suggested price is for resale? Thank you in advance

Hey bro what's up? I had a feeling that you would of replaced the carburetor since it was giving trouble starting when it was hot. My lesson from this video is although you invested a lot of time cleaning out the carburetor, it's sometimes better just replacing it.

Damn that's insane but not too surprising because the companies that make these mowers expect you to take out the battery when doing any kind of maintenance.

At the 4:42 mark it looks like that o-ring between the carb and engine is deformed. Could it possibly be that after the engine gets hot there is a slight air leak around that o-ring causing the hard start problem? I noticed that the new carb came with a new o-ring that you installed.

There's a small styrofoam washer located between the throttle spindle and the carb body. I noticed that at the start of the video, it was already in poor condition. Then, after the ultrasonic cleaning, it has gone totally missing. Of course, its absence will cause a noticeable air leak making the engine run overly lean and thus hard to start without priming, even when hot. And it's pure luck that this one engine wasn't surging in these conditions... This crappy little part made of the cheapest possible material has already been the cause of my issues on 2 different mowers (the last one having the same B 450 engine). It decays very fast, ruining the fuel/air ratio. Shame to Briggs & Stratton for having cut costs at such a sensitive spot. 😤 Of course, replacing the whole carb will fix the issue... for some time. On my side, I've replaced the defective washer with 2 rubber O-rings stacked on each other. Of course the throttle axis won't move as freely as before, but at least it works. For almost free.

nope, sticking with gas, until the EPA comes nocking on my door.

Faulty choke thermostat behind the muffler

Can you help me with my mower when i prime it 2 or 3 times gasoline comes out from the air filter

Great choices!!

I always wire brushed and oiled the magneto and flywheel magnets to get the rust off. I've heard it didn't make any difference but if you kill the rust the mag won't disintegrate either. I don't mind pulling one if it'll run but I'm not selling it either. You did the right thing for the end you were looking for. Happy Memorial Day and Blessings!

opinions are like A holes every body has one. my mower is the opposite three or four pulls to start on cold after it is hot pulls and starts first pull.

The problem is less "the carb" than something about/within the carb. To quickly troubleshoot the problem, one could re-install the original carb but with a spare carb's main jet assembly. If that resolved the issue, I might be inclined to buy a few of those jets as spares, since they can be had for less than a buck a piece.

I noticed that even after you ran the carburetor through the ultrasonic cleaner after reinstallation the engine had a slight surge. When you put the new carburetor on that surge seemed to go away.

I would have replaced the carby. Those bits of plastic are a nightmare. Fortunately, both my mowers have metal carbs on them, as does my new Vyking Force 4kvA generator.

It's best to simply change those out if one cleaning doesn't bring them back. It's interesting that every one of these I've sold was purchased at Lowe's. They hold up reasonably well for a budget priced push mower. Good video 👍

Hey. I appreciate that you’re willing to consider ideas from viewers. That’s really cool. Several brains are always better than one, even with geniuses. However, you obviously knew what you were doing, and could have fixed the mower a lot quicker so in this case, you hit a home run!

This is my cheap Craftsman lawnmower (I have a couple of really good ones-Toro and Honda). It was doing this right out of the box. If it's cool out or it's sat for more than 5 minutes, I have to use the primer. I guess I know what I'll be doing soon.

well for me i,d inspect the condition of the seals and gaskets before replacing the carburetor aka carby as they can shrink or go flat over time etc.

I would have replace once it got a little worse if it was my own. 👍🙏👍🙏

Sorry to bother you, but what did you use for Trans fluid?

For my own personal use,I don't consider 4 pulls excessive. 19-20 maybe,4? No. Selling it is totally different. As you said, the fewer pulls the better.

I have never had this particular problem with that carb. I would probably replace it if I was going to sell the mower.

I can't believe that this is the mower you chose to make a video for. I JUST bought one of these, used, to be used for trim work. My Recycler, of course, is a better mower, but it doesn't like being pulled backwards, and for trim work, I'll be pulling it backwards as much as going forward. I would have kept the original carb. I can pull the rope 4 times. At 8 or more pulls, I would have replaced the carb. Could you post a link to the carb you used?

The 2 thing's that I think of is the ignition coil is going out And back in the day when Briggs and Stratton engine s didn't like high octane gas

The carburetor needle valve seemed to be very dark on the tip - maybe this one is not opening wide enough on the old carburetor?

I wonder if the gasket on the front of the carb wasn't making great contact with the air filter base. I've had to replace a few of those over the years. I've also had a few of the carbs not secure properly because one of the holes in the carb were stripped where the 2 screws go into it. Then you get air leaks, even if slight, can cause re-start issues where the priming puts extra fuel to help offset. Either way, the effort to continue to disassemble/reassemble makes a carb swap an easier option.

yeah if you sell it you did right by fixing it

I think that there may have been some crap which was still stuck in the carburettor so a new carburettor.may have not been needed. I might have also checked the float needle which has a special type of rubber tip,it could've also been worn out as well,AFAIK the seat is made of brass,the engine could've been flooding a bit as well !

Ahhh the carb part number you showed is listed on Amazon now is 40$ How do you come up with 20$?

Carbs even the metal ones develop little imperfections that affect their performance. No amount of cleaning will help this. Good video.

You did the right thing. Great job.

Nice! One pull is definitely better than four 👍🏻

I would if I had the money.. right now it's old fashioned reel mower and a gas weed eater to cut it down to length or get what the reel mower could not get.

He didn't check the oil first .

I have a old quantum power 3.5hp briggs it has an electric start but it only starts with a big car battery, if i try to use a small battery it doesnt have the power to crank over the compression stroke or it just doesnt crank as fast, so it only starts with a car battery, what should i do?

I really like the gasket maker as well

This is dangerous

Just bought a drill adapter that works since the recoil failed twice. Once that fails...dumpster time

I don't see parts that are related to TORO Trimmer or as shown.