Trying To Fix A Troy-Bilt Mower That Won't Start 

That aluminum was so deteriorated that I'd go with a new carb.

new carb, after market ones are now very affordable on amazon. I got one last year for 6.99 and included carb, air filter, pre-filter, fuel filter, spark plug and it worked great. if you saw my Fluffy the nest mower vid coming out on 6/15/2024

I use a brush attachment on a drill and really clean out the seat hole and then use a Tecumseh seal installer tool and it’s been working pretty good for me

I'm going to vote new carb. You can save that one for a winter project and in the meantime the mower will be running and will put some cash in your pocket.

A few videos ago, you fixed a black craftsman lawnmower. I commented that I had one exactly like it to fix up and I got around to getting it up and running good. I even used the same method to replace the battery for the key start as you did on that mower. I had rebuilt the carb and ended up with the same issue as in this video. The carb is pretty clean on mine, but for some reason the needle just doesnt want to seat right, so it leaks. I just added a fuel shutoff valve until the new carb I ordered arrives. As for the carb in this video, Id just replace it. I recently saved a carb in another mower that had ethanol damage, but that one cleaned up fairly well.

I usually use the end of a drill bit and it works perfectly on those needle seat. Great video 🙏👍🙏👍

I've had similar issues when replacing the needle seat. I buy them as a set and change the needle too. I don't know how or why, but that usually seems to work. Maybe the shape of the needle is a little different or the opening in the seat is just a little different aftermarket vs OEM. But, if it were me, I'd take one look at that carb and the corrosion, and say "NOPE!" It'd go right into my scrap metal pile to be disposed of and a new one put on it. I also automatically replace the fuel line on any Quantums that I get now - they're usually the original and at the point of likely to cause a problem. A trick on those primer bases that's worked for me....use duct tape on the air base to seal the air channel along the bottom, leaving just the upper part (maybe 1/8") open. That will line up with the hole in the gasket, and allow the pulse of air to work correctly. I've found the warping of the airbox or the flattening of the raised edges on the channel usually are an issue towards the bottom of the carb, and then it re-seals again along the side.

I had a very similar Troy Built 675 series. Just sold it today!

New carb all the way. That one was bitten by the Ethanol monster and/or zero fuel system maintenance.

New Carb

R/R old needle seat if ya plan on using old carb or replace it wit a new one. You could also R/R gasket on air box, clean or replace air filter too.

I tried to fix a Honda carb on a leaf mulcher but you had to choke it every time to crank it BUT it looked exactly like that carb or caked up worse. It ran fine after you choked it but the carb was really shot. And I gave away 8 running mowers but I was the reason they left. And a pressure washer as well. Sewwtums is overjoyed with the battery stuff. So be it. Happy weekend and Blessings

You know Mr HG to each his own I've been watching your show for a while and I do find that you buy new carburetors far too frequently when you could just buy a set of valve seats for about 8 bucks for 20 plus you want to go ahead and buy yourself the Tecumseh needle seat valve tool. I'll come back and add the part number and description on here but I've been doing that for quite some time and I've saved money. And I've also given a pretty good quality carburetor

Hello Home garage..I would go with a new carb 😊😊

I would think it's worth putting a carburetor in it it's a nice mower thank you for the video

TY for Sharing

It will not be easy but I would like to watch the rebuild :)

New Carb time!

Yeah new carb for sure👍

New carb!

You can get a clone card for this engine for about $8.And they seem to work perfectly fine. I've installed a ton of them on this engine and i've never had an issue with them. I would just go ahead and replace it. It's not worth the headache

You know you're buying the carb but if you have anything in the old storage shed for sure go back in !

I would replace the carburetor. Fairly simple due to the corrosion of the main carb body.

I’ve found a lawnmower for free and I was checking the compression and it started 😂so I took it and it had free on it

I've had to many of the needle seats crumble from me trying to unscrew them out so i don't anymore or the screwdriver tip breaks off in it brass is soft metal

New carb for sure! I'm just more confused about that it's a primer type system but there's a thermostat arm on the muffler for the autochoke system. Hmmm

When I saw that carb, that's the first thing I would have replaced. That carb was pretty bad.

I would say new carb. Get that over with lol

The ignition coil did not look very well, too. or is this the safety brake combined in?

can you bead blast carb to get crud off or will it cause damage or too much work. I vote new carb and deal with battery start

I’m with @covishen get a new carb also look at the piston to see what it looks like for the life on it or do a compression test

Hey, I was wondering what app you use to get your mowers?

what part number is that large bowl gasket please?

Replace the carb. That carb looked pretty bad. I wasn't surprised when it started leaking.

I have the same engine on my mower. How would I access the valves if I needed to adjust/check the valve lash?

My vote is to try to rebuild it again.

Is there a linkage missing on this mower from the carb to the muffler? That muffler has a bimetallic arm that moves forward when hot to serve as an auto choke..or at least my motor does and it looks really really similar...however if its the carb then its really not worth rebuild..new/aftermarket carbs are cheap enough that its not worth the time to rebuild.

New carburetor for it

New carb time.

That carb looks like the metal is flaking. I'd order a new one.

4 cycle carburetors are almost impossible to rebuild. Considering how corroded it is, maybe a new one would be wise.

I think you should order a new carburetor an add $30.00 to the coast of the mower to cover your lost in your time.😅

at 6:28 fuel line looks like its split...

Take your new parts out of the old carb and toss the carb away. Get a new carb and a new primer plate.

New carb for sure. Old carb too far gone although you did a great job getting to look somewhat normal but it has deteriorated for too long. 🤥

Hey bro what's up? I say get a new carburetor

I'd order a carb with the air cleaner base and not waste time

What’s clean

I would buy a new carb.

What kind of person would put gold paint on a lawn mower? What are they a gangster?

Order new one

I would just go ahead and order a new one, with the old one leaking that way, it's a danger and fire hazard.

Buy a new carburetor.

Order a new carburetor

Hi just a question what do you use to oil the foam air filters?