Covers, Boat Cover Acessories, Fishing Outriggers & Good luck cleaning! At this time, you may modify an idle progression hole in the carburetor. The Walbro carb is an adjustable jet (their term.) 2023 LawnMowerForum.com. More problems can be created than solved if poor technique is used. You are using an out of date browser. The passage way is very small. Welch plug removal epic fail | Arborist, Chainsaw & Tree Work Forum well that is the side you get to the welch plugs (4 screw side). punch, rod, or bolt that is the slightly less than the diameter of the Welch plug. WALBRO 88-171 WELCH PLUG For Walbro WA series carburetors. So far I have remade/cleaned every pluggable connector, redid the ground connector, metered the battery OK. No change in the symptom. You would need to remove the small welch plug at the top of the carb and hope you can get the old fuel cleaned out of it. These notes are for the Walbro. the most important one is the 1 in the high passage. Axles, Boat Trailer Tie Fuels with ethanol may be part to blame as well but the check valves are sensitive and very temperamental. The pilot screw is the idle port adjustment. Winches, Boat Motor Supports & Wrong (compared to orig.) Not as much fun now sneaking a pot out of the kitchen. Now, Shop Products, Carbon Monoxide & If you use a bolt, you must be sure that the end is flat. I would never have thought to look there for a screen. what feeds both the nozzle jet in the throat of the carburetor but also the idle circuit. Dollies, SportsStuff Great Big The best way to do this is to use a very narrow tubed compressed WALBRO CARBURETORS 4 CYCLE PRE-SETS AND ADJUSTMENTS Carburetor Model No. Looks like I'll have to remove the mower deck to get at it. that jet you can see in every carb. WALBRO 88 . Ive never used sealer.If the plug is well seated before you "punch" it,there should be no leak.Once installed,put a bit of oil over the plug and blow air tru the corresponding needle hole.If bubbles,then,punch a bit more and recheck.If you got leak,the saw will run rich. Lighting, Marine Teak Charts & That is why Walbro advises to run the carb dry before storage. Just for information, the high speed check valve can also be made of a capillary screen that blocks air return flow. We welcome your comments and Welch plug info for Walbro carburetors WG & WB - Southwest Airsports The only times I have had problems with the carburetor is when I used carburetor cleaner. I do my best to teach you how to easily diagnose small engine problems the fastest, quickest and most efficient way with real repairs beyond just replacing a spark plug. T Hi there, Just snap a photo and we'll find and store your user manuals, receipts, and product information in one easy-to-find place! The larger welch plug is the transition port. After removing welch plug in a similar carburetor (Walbro WT 439A) no check valve encountered, just little holes leading to the idle ports in the carb's venturi. Ive never used sealer.If the plug is well seated before you "punch" it,there should be no leak.Once installed,put a bit of oil over the plug and blow air tru the corresponding needle hole.If bubbles,then,punch a bit more and recheck.If you got leak,the saw will run rich.And before removing it,direct your tool at angle away from the needle to not damage the needle hole area. After this, clean the carburetor with compressed air and carburetor cleaner. These tips are for both the homeowner and shop owner.Whether it be a handheld, two stroke, two cycle engine like a chainsaw, weed eater, weed wacker, string trimmer, grass trimmer, line trimmer, hedge trimmer, strimmer, brush cutter, leaf blower, or four stroke, four cycle units like a lawnmower, wood splitter, lawn tractor, snowblower, pressure washer, generator or a ride on mower that needs parts installed or replaced, Im your go-to guy.My favorite brands of spark plugs are NGK and Champion and are the ones I recommend.Ive been a small engine mechanic for many decades and also run my own repair shop so my videos are loaded with tips and tricks that I have learned and want to share with you. I ruled out the coil, and everything else seemed fine, so I figured that the carb may fouled again. Walbro Welch Plug | Hobbyist Forums (I know I have already said this over four times, but it won't hurt to say it again.). Locks, Boat Deck and that spring clip does 2 things it holds the screen in place but more important thing it does is holds the high speed jet in place. Ski, Wakeboard Deals, Camping & RV Blow the whole thing out with gumout and compressed air checking all the fuel passages for trash. View our Privacy Policy here. Use the punch or bolt to set the Welch plug. Once the hole is made, push the pin-punch or the other end of the drill bit just into the hole and move the punch to one side. 1.9K 86K views 4 years ago #donyboy73 #carburetor #db73 HOW-TO Replace Carburetor Welch Plugs Ever wonder how to replace those pesky carburetor welch plugs? maybe good practice for us to clean then semi anually or so hey dudes, I just got a rebuild kit from my local lawn mower shop and the mechanic was 100% positive that in the new (last few years) walbro carbs there is no screen under the welch plug. For the WT-64x series the kit number is K24-WAT. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. JavaScript is disabled. T-Y for your reply. One of these items ships sooner than the other. holding it in place is a spring clip. I also usually replace all the fuel lines with new lines. Discussion is closed. Seems a combination of problems, but I'm a little vague on the last one. From all I have read and listened to others, the Walbro can take the rigors of cleaning (chemicals and compressed air) to a much better degree than Zama or the others. Which Walbro WHG do you have just to verify the correct Walbro kit? Saw runs great. Maybe starting to run lean from the clogged screen? Was going to pop the welch plugs, but will reconsider. ANy help would be appreciated. It also works very well on metal watchbands. . Once in a while you are simply going to end up with running problems, requiring the removal of the plug(s). see it?? High Back Reclining Helm Seat, Cabin and Dirty Walbro carb screen - Page 2 - FlyingGiants I see what you mean, but with an ultrasonic cleaner you don't have to take the nozzle out in the first place, so you will only have problems if the nozzle is bad or leaky BEFORE you work on the carb. Sounds like you are on the right track of debris in the tank. Vinyl, Floating Boat As soon as I close the throttle it dies. Systems, Lowrance Hook2-4 GPS Marine Battery Chargers, Shop The More is hardly ever needed. $25? You must log in or register to reply here. The Right Fit, Shop By then to replace them. The kit applies to several carburetor models so there are multiple versions of many of the parts in the bag. use a small brass punch and lightly tap them in place. Wells, Toilet & Waste I tell everyone to stay away from real harsh chemical cleaners and high psi air to clean. & Sonar, Trolling Our experts will get back to you as soon as they can. Welch Plug sealant | Arborist, Chainsaw & Tree Work Forum Also how are you guys pressure testing the carbs once you rebuild em. One of them refused to prime when I got done cleaning it, so I took it apart again and found the little screen inside crammed full of gray sediment. The pilot circuit is drawn off the main circuit via the idle fuel restrictor. I have never tried to fix a check valve like this before, but I would think you could spray some carb cleaner into it and let it sit or put it in an ultrasonic cleaner and do several cycles. well there are 2 different kinds in the carbs. There are two ways to remove Welch plugs. Fasteners, Boat Windshield Shelters, Boat Thread Starter Join Date: Sep 2008 Location: midwest Posts: 1 Upvotes: 0 Received 0 Upvotes on 0 Posts walbro carb setup I get a similar problem when I rebuild walbro carbs. Mr. Bulb I feel I can help with the FL1500 units as I have 2 of them. drill press (best) or a drill chuck (take one off your electric drill) Note: If you are exceptionally skilled with a hand-held drill, you can use it. how to clear idle port in throat of Walbro | Hobbyist Forums Parts, Inflatable In most cases we can use some spray can brake cleaner and determine if we have any obstructions at the intersections of the drilled passages under the plugs. Yes, count me as a new ultrasonic cleaner fan. Seats, Offshore Boat However, I just used it today and it worked great. Walbro Carburetor Maintenance. - The Profile Brotherhood RC Forum Use the nail polish it wont be affected by gas.It is a lacquer. One of the great things about Walbro carburetors is that there are rebuild kits for them. I doubt that's your issue them - the WS26 doesn't have a welch plug Did you remove the screws to the cover in the bottom of the metering chamber and replace that gasket etc? This screen can get dirty if the main screen is removed, or gumming fuels are left over in the carb. So now I got my own mower carb boiling rig. Carburetor Tool kit Replaces ZAMA ZTK-101 Welch plug removal Typically there is no need to remove this. You would need to remove the small welch plug at the top of the carb and hope you can get the old fuel cleaned out of it. the silver . Holder, Anchor & Dock Also you may need to adjust the float hinge. Biminis, View It's on page 15 of the manual. This is the little brass tube that runs through the venturi. Enjoy banner ad-free browsing with Hobbyist Forums Plus. Two-cycle engines have whipped more people than you and I know put together. Detectors, Binoculars & Acessories, Fish Cleaning Battery Charger, Marine Audio & This is the little brass tube that runs through the venturi. Reassemble the carburetor, adjust, and test. 893 170K views 5 years ago There was a time when doing the deep clean on a carb scared the hell out of me. that is the bowl vent, your float needle isnt sealing. If it is As per your comment, I agreebut.there is the issue of a main nozzle passing the test on the bench and then failing once fuel hits it. If cleaner comes out the little hole in the venturi, you are good to go. When finished, Galley, Barbeque After removing welch plug in a similar carburetor (Walbro WT 439A) no check valve encountered, just little holes leading to the idle ports in the carb's venturi. A lot cheaper than a 5 gal. the silver ones are flat, you will need to hit it in the very center to spread it out. Boarding, Paddles & I will take it apart later to see what the problem is. OK iv'e read several threads out of dozens searching welch plugs to no avail. Maintenance, Fiberglass & Epoxy Oddly, the exploded view of the carb calls out a pilot screw under the welch plug closest to the rear of the carb, so naturally I thought there would be one there. Starters, Marine Solar Power This item: Walbro 10 Pack Genuine 88-171-8 Carburetor Welch Plug OEM. Cleaning that and replacing diaphrams and gaskets when necessary will usualy solve 99% of our carb problems. Tables, Minn Kota Whatever is used must fit inside the rim at the top the Welch plug well. I had to order a replacement carb for that machine (a Homelite pressure washer.) Zincs, Generator Welch plug help | Arborist, Chainsaw & Tree Work Forum for Sale, Buy A Protection, Dock Storage & Galley, Covers and But I didn't disengage the blades and it died before I got off the seat. Instruments, VHF Radios & Did not remove welch plugs. I now use a Harbor Freight ultrasonic cleaner without preheating once on the eight minute cycle and then once on the eight minute cycle with heat to clean the carbs, and compressed air at 60 psi to dry out the passages and finish the cleaning. You got a new one in the kit. 2023 LawnMowerForum.com. I have had the "no Prime" scenario happen many times and have the carbs still here! Tops, Bimini Top
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