Cast Iron Briggs and Stratton Carb Rebuild Part 1

[glynnbullock]

Hello Zippo. Enjoyed your video. Very informative. I wonder if you can help me locate a supplier for the long nozzle which features in your video (the one which goes up through the carb - for my B&S model S23 ZZ engine). Or a supplier of a carb rebuild kit as per your video. So far I have not had much luck in the UK. Thanks in advance

[FrankM393]

Hello Zippo, love your videos on re-building carbs on cast iron Briggs. One problem I am having is when I took out the idle set screw I found the tip had broken off and is stuck in there. Any ideas to get it out? If I drill what size bit should I use? Hope I posted this in the right place. Thanks FrankM

[rm33191]

Great video

[ROCKNTV1]

@kelkenb8 sounds like possible worn throttle shaft, causing air leakage..

[ZippoVarga]

@kelkenb8 I sure do! I just gave you the most common and easiest repair. Next, take the gas tank off the tractor, empty it out, then inspect it for rust in the tank. If there is, take the fuel petcock off and replace it with a brass pluf, throw a few nuts and bolts i the tank with about a pint of mineral spirits. This will break anything loose like rust or varnish from sitting for extended periods. Also, on the tank petcock...blow the screen filter and it will eliminate the tank as the issues.

[TheTractortroy]

thanks zippo your vids help me alot

[ZippoVarga]

@TheTractortroy I'm glad they help Troy. Let me know if you need any other videos and I'll see what I can do buddy. Cheers!

[SculpturedWaters]

@ZippoVarga Thanks Zip on seeing that the main jet had to be taken out before the lower half could be taken off. I am pretty good at mechanics and engines, but if I had tried to take carb apart without first knowing that the main jet should be taken out first, Well lets just say it would have came off one way or the other ..lol I didn't get the Nickname "Tackhammer" for nothing.Which means "If I cain't fix it, I'll tear it up!!! Have a cast iron 16hp Briggs running a 7 1/2 hp Air Comp.

Thanks

[TheNamrondivad]

hey Zippo, When I screw the needle jet in untill it seats, the choke butterfly will not close. Any ideas? thanks

[ZippoVarga]

@TheNamrondivad The only thing that is coming to mind is the possibility that you're screwing in the throttle set screw, which will keep the throttle butterfly from closing. The Choke Butterfly is no where near any other moving parts on the carb, so I can't imagine what would be holding it open. The main needle jet also is no where near any other moving parts, nor is the idle set screw, so the only screw left is the screw that adjusts the idle speed.

[bcarbaugh]

What's the part # for the carb rebuild kit for that 23D?

[ZippoVarga]

@bcarbaugh 291763

[bcarbaugh]

@ZippoVarga Thanks,now I just need a gasket set for the motor.

[harlstr]

hey mate i have a briggs&stratton 3.5hp sprint motor and when i start it the throttle goes up and down i have changed the carbie / diaphragm and gasket / throttle spring and linkages but it still does it can u please help

[ZippoVarga]

It's possible that the engine has been over heated at some point and the cylinder wall is scored. Another cause for this condition is if the engine was ever ran, then hosed down before it had the chance to cool down on it's own. This can crack the block, warp the block, cause the hardened valve seats to float etc. It doesn't sound good I know, but those are the first things I look at when I know the carb is fine. Another slight possibility is a bad head gasket. Let me know!!

[harlstr]

@ZippoVarga i'll make a video and show u what its doing

[ZippoVarga]

Right on mate. That will help me.

[GarrettJDB]

i have done the same thing with screwdriver i have one just for the main jet in those large two piece flojet carbs i just rebuilt one on saturady for an old cast iron briggs of an old 1966 Cenex garden tractor

[ZippoVarga]

That's the best way I know of how to get the main jets out in tact. I've tried hollow ground bits, narrow drivers etc. Nothing beats a purpose ground screw driver! Thanks for the comment Garrett!! I'd love to see that Cenex!!

[CSAKvids]

I still gotta get me some of that chem dip stuff. Something Ive been meaning to get for a long time! Another great video buddy!

[ZippoVarga]

Hey Charles! Thanks man! That gallon can stores a lot easier than a 5 gallon wash tub..lol.

[mbyr31]

Great info man! I have rebuilt several carbs like that!

[ZippoVarga]

Thanks Matt! Kohler carbs just plain suck because of the butterfly shafts always wallerin out the holes in the carb bodies. I've never had that happen with any Briggs carb. That's why I leave the Kohlers to those Cub guys..lol. They believe both are superior and who am I to show them the light? lol....I'll pay for that one I'm sure..hehe

[1944johndeerel]

@ZippoVarga that is just a design flaw of the carberator. the rest of a Kohler K series engine is very ruggedly built. i love my kohler engines they are very dependable. i havent had much exposior to the larger briggs engines but my 16hp briggs is great! usually starts in 1 pull. i like it about as much. i like working on old briggs and old briggs carbs. they are easy to work on. i should get some carb dip. that would be handy!

[ZippoVarga]

I always bust on Kohlers...lol. I've rebuilt a few larger displacement Kohlers and re-bushed the carbs easily enough. I have found though......Briggs parts are less expensive! I also leave the balance gears out of the Kohlers like many do. The first couple I rebuilt I replaced them easily enough, but after talking to many Kohler guys, the vast majority left them out on rebuilds.

[1944johndeerel]

@ZippoVarga kohler engines are no doubt great engines. and yeah the carbs are pretty straight forward to repair, but you are not kidding about briggs parts costing less! both kohler and onan parts cost a fortune! we rebuilt the onan on my dads Case garden tractor a couple years ago finding parts reasonably priced was half the battle! rebuilding the kohler on my 1977 john deere 210 wasnt bad to find parts, but it sure cost me! rings and a rod ran me close to $100 if i recall.

[ZippoVarga]

Thanks Matt! They're easy to rebuild. Hardest thing is getting the main jet out if the carb has sat a long time and the threads have oxidized. Then they're a bear.

[Ram2253spd]

Great video Sean. Very helpful

[ZippoVarga]

That's why I do it!!! Thanks Ram!!!

[snoman2]

great info sean i just rebuilt my 16 horse briggs carb 2 days ago looks like the same setup as mine good vid!

[ZippoVarga]

Thanks James! These engines are great to work on. All told I have over 30 engines. The majority are Briggs then a couple odd ball Lausons, a Montgomery Wards Airline Charger gas powered 6v DC Charger, one Wisconsin Robin 2 cycle, a Lifan and a 6.5hp Honda on my power washer. Oldest is a 1930s Briggs Model Y that was used on Maytag washing machines after Maytag stopped making their own engines. Fun Fun!! Thanks again and good luck with your 16hp!