Carburetor Drain Screw Leaking

took carb off but i can't find any screws other than the idle screw. If you notice a gas fume smell around your fuel station, it might be time to replace the fuel handle. this link Performance Mods Section. Many products with traditional or turbo hardware are built for vintage motorcycles and modern motor vehicles. Then you can get to carb, idle screw, mixture screw and the idle jet if needed. Carburetors parts are made with softer metals like brass and aluminum , be gentle with it. If you turn the Screw Counter Clockwise it will empty out your fuel bowl, you do not need to plug anything and leave the hose hanging down in front of your cvt. Make sure to wipe up any excess grease. I've attached a picture below with the red arrows showing the drain tube that leaks fuel before the vent leaks. I have the same problem with a leaking plastic fuel tank. I double checked that the petcock was in the Off position. The fuel screw setting at idle trims the pilot fuel, and considering the fuel screw ends up at 1. You're done. If it still is acting up, install a rebuild kit. I tried to tighten the screw, and it made the leak worse. SOURCE: Fuel leaking from carb vent tube on newly cleaned carburetor. Its been leaking for a while and put it down to the drain/bleed screw at the bottom of the canister but after nipping it up it was still leaking. Drainzit hoses are custom-designed to be easy to use and install. A lawnmower fuel leak is often caused by the carburetor. - With the dry boat on the trailer, install your drain plugs and run a garden hose into the bilge. 7ngk cr7hsa i believe those number are right. The fuel integrity at this point is maintained by a fibre washer on the drain plug, this is worth replacing, when refitting the plug, to guard against leaking when the tank is refilled. Check to see if the fuel tank is empty or if the lines are blocked. Reinstall the carburetor and check to see if your leak is gone. The cork float is maintained in the chamber by the float clip and a small screw. If the carburetor is cracked, it will leak fuel. Remove the fuel line from the left side of the carb (black rubber line from the fuel tank) 5. With the fuel off, open that screw and let it all drain out. Now let's move on to the most common cause of fuel leaks, and it's due to this little part right here, the float needle. I'll check on that as soon as I am ready to drain the oil. It was marked to indicate correct fuel level/float height. One of these is a leaky drain valve on the combination fuel bowl and water separator. I have a 2001 Renegade and have discovered raw fuel in the starboard bilge. Also rotate the carbs and pour out any remaining fuel from where the fuel line was disconnected. Plugged bowl vent or overflow. By performing carburetor repair with official Briggs and Stratton parts and cleaner, you can help ensure that your small engine is healthy and running right. xx Float Valve does not seat properly due to dirt, rust or material failure. Rotate the carb, tighten the boot clamps, and drain screw. Turn the gas back on and wait a minute for the carb to fill with gas. When your Tecumseh Carburetor repair includes a Carburetor Bowl replacement, you can find it at Jack’s. i tried tightening the drain screw but had no luck stopping the leak. Those screws can and do vibrate loose and fall out. Check to see if the fuel tank is empty or if the lines are blocked. Edit: the drain screw does not have an 0-ring on it, so it is a metal to metal seal. To adjust the governor linkage, loosen governor lever screw. He has the type of drain plug where you take the cap off and pull out this plastic piece, and then when you are done draining the oil you push the plastic piece back on and put the cap on. Other wise bike is in near mint condition. Can't get a screwdriver in there to get it off easily? New from Lowbrow Customs, a Brass Float Bowl Drain Plug! The hex makes it easy to get a wrench on the head, and it will add a touch of class to that bowl! This plug is made specifically for Concentric Amal Carburetors - 626 / 928 / 930 / 932 Each plug is sold individually and comes with one. The fuel that is drawn into the engine resides in the bowl of the carburetor. My carb on my atv is leaking gas out of the float bowl drain tube? I have an 07 Kawasak Bayou 250 and affter it's shut off affter running it will drain quite a bit of fuel out of the float bowl drain tube ( I have checked the float bowl drain screw and it is tight. Another cause of a gas leak is a sticking float inside the carburetor bowl. Carburetor common repairs and adjustments This first picture is of the accelerator pump diaphragm housing, held onto the front of the carb with four screws. The level of the fuel should be set to a distance of 15/32" below the machined surface at the top of the fuel bowl (with the engine running at idle speed). Or use old impeller and replace with new impeller in spring. my question is do i have to remove my filter bowl or can i somehow get to the 2 screws for removing and installing. What method did you use to clean the carb? When you poured fuel into the bowl, was it off on the bench? Where did it leak? Yes, the plunger is its own seal, and if damaged, could leak. If it does,give the carb a rap with the handle end of a good sized screwdriver a few times to see if it stops. Several times recently when I turn on the fuel cock there is a. Secure the drain valve to the fuel bowl with 4 #20 torx screws making sure that the valve is secured tightly to the fuel bowl to prevent the possibility of it leaking. Some people use silicone sealant on the end of the fitting, once the screw is in place, to keep it from vibrating loose. And fuel avg. And now for the 10,000th time the needle valve has failed. Oil smoke or leak near the carb: The drain holes in the breather cavity (or breather cover on some engines) may. When I turn the throttle my drain valve leaks gas at a tremendous rate. cleaned it and it all looked fine but I did not adjust float height. There was nothing on the end of that little nipple so I added a tube and a screw to stop it from leaking and stinking up my house. Fuel has been leaking in this area so the drain valve was replaced and torqued to. Next install the float bowl gasket and then the bowl itself with its three screws. The cork float is maintained in the chamber by the float clip and a small screw. Not all happening at the same time. Dirty or damaged air cleaner element. Either for the environment or your pocket. ?? The large screw plug on top is the fill. It is made up of the Pilot jet and Idle Air Mixture screw. It has a K&N airfilter and thats it. Needed one, anyway. Turn the driver’s side throttle adjustment screw IN (clockwise) half a turn to start with, with that done turn the key on and go to dashboard and find TPS and make sure it reads zero. is not really the carb drain BTW until you open the screw) then it is down to one of four things. This could be due to a throttle cable that is too tight or misrouted. It can leak if the screw is not sealing, OR it can leak if the float bowl is overfilling. 2nd put some Teflon tap on the treads clean bottom of primary really well and look for crack then drive. By Andrew Pollack on 01/17/2011 at 10:13 AM EST Eighteen months ago I wrote a little article about how to adjust the brakes on a lawn tractor because I couldn't find the information myself when I searched. And of course when I tried to remove the filler tank tube clamp, the screw snapped off (hey, its rusted!) and I didnt see any other somewhat easy and safe way to drain the tank (which is 90% full right. check this video out at around 4:00 mins tells you how to fix over flow problem its a 2t carb but your ft carb float , floot needle work the same way make sure the spark plug is gap right and new,. If you assemble the intake and the carb just the way they come, the carb can't fit all of the way onto the intake tube. I checked to see where it is leaking from, no question about it, it is leaking from the drain tube that is attached to the fuel bowl. That tube is a "vent" tube. FUEL FLOW ISSUES: The Ford 8N Tractor fuel system has three (3) screens. Leak Jet Effects on Air/Fuel - Blocked Jet, #50, and #80: Fuel Screw Effects in 1/2 Turn Steps: Linkage-closeup- as the screw is turned inwards, the rod touch-point is delayed: BKMod to Reduce the FCR-MX Accelerator Pump Stroke: Turn the Choke Knob on PJ and PWM carburetor to set the idle speed. If the nozzle continues to drip, the drain valve is faulty and will need to be replaced. Any ideas would be much appreciated. Oil smoke or leak near the carb: The drain holes in the breather cavity (or breather cover on some engines) may. After helping BigTex with his fuel line issue's I would suggest that you either drain the tank or plug the feed line to the pump with a bolt. Set the buffer screw by turning it until the engine speed increases slightly. Used by first response emergency marine rescue operations, Stay Afloat stops water immediately. GY6 having fuel piss out/vacuum issues. Phillips Oval Head SEMS Self-Tapping Screws Chrome Finish #8 Size:3/4 Description:SEMS SCREW CHROME 8X3/4 Pack Size:50 This product can expose you to Chromium, which is known to the State of California to cause cancer birth defects or other reproductive harm. WEBER CARBURETOR TROUBLESHOOTING GUIDE B. It comes with all new mounting nuts and a magnetic drain plug. Then disconnect the fuel hose and squirt some aerosol carburetor cleaner into the fuel hose to fill up the float bowl again. This kit is a genuine OEM International brand part. Drain pipe its wet with petrol means petrol is leaking. Tecumseh Carburetor Bowls. A couple of possibilities for your leaky carb vent: Float level too high; the needle/seat aint sealing or gas is leaking past the threads of the seat. Remove the 4 screws on the float bowl and remove it. If you have fuel in the tank and the lines are not blocked go to 2D. is the test for. Holley products for GM's popular LS engine are dominating the LS scene as well. I took it apart and checked to make sure that the float needle wasn't sticking or had crap in it, then I set the float drop just in case it hung up the needle, but still spewing fueland yes I tightened the drain screw. It stops water from leaking beyond the drain and keeps your shower free of mold and mildew. I wondered about dirty fuel / water in the fuel and after a bit of poking around undid a screw which I suspect was a carburetor drain screw. Drain fuel filter after every 100 hours of use. Remove the screws that hold the overflow cover in place. 4 psi to remain for a period of at least 15 minutes and then raise the fuel pressure to 6. Some models of Tecumseh Carb Lookup called a split system because the main and idle circuits are separate. So my friend has a Suzuki RV-90and we tried to drain the gas. This could be due to a throttle cable that is too tight or misrouted. There's a pretty good sized leak at the bottoms of the grooves in the carb flange. There is a screw/drain valve and a "O" ring associated with the drain valve. I guess I over-tightened the #1 carb (left one when siting on the bike) drain screw and fuel. Please follow the instructions below. I took the carb out, took it apart, and cleaned everything. Removing the drain screw won't solve the problem. If you don't have time to fix it, make sure your gas is turned off then set a big pop bottle on your floorboard so the hose can drain into that. However, the early fuel pumps can be lubricated by either oil or grease--VW continued to install the early-style fuel pumps well into 1955 before dropping the drain screw. If it does rise higher, fuel will eventually leak out the over flow. [Archive] CV carb leaking gasoline from the buttom Sportster Motorcycle Air intake, Carburetor, EFI, it is the float bowl drain screw and if loose, will allow gas. Also rotate the carbs and pour out any remaining fuel from where the fuel line was disconnected. Check to see if oil is dripping from the plug and then check its tightness. It will cling to wet or submerged substrates. Holley products for GM's popular LS engine are dominating the LS scene as well. Check that the fuel-bowl drain screws are closed and that the vent and fuel feed hose is attached properly, clamp tightened. The best way to flush out a piece of crap is to drain the bowl of all fuel using the drain screw under the bowl, and then refill the bowl by starting the bike. There are no downward passages, all the fuel has to go up before it can go down. Contaminated fuel can cause selector valve seal damage. These valves provide the most trouble free operation of any other line valves in the industry. The fuel usually comes out dirctly from the high speed tube located in the carb venturi. N-Series Sediment Bowl - Fix for Leaking Valve. that's why some guys report fuel in the airbox. After helping BigTex with his fuel line issue's I would suggest that you either drain the tank or plug the feed line to the pump with a bolt. If the bike doesn't start and run properly then shut off the gas and remove the carburetor from the engine. I've got an 8 year old Stihl MS 361 that has developed a fuel leak while it's sitting, I'm sure it leaks fuel when it's running as well, but it shouldn't be leaking fuel at either time. Carburetor common repairs and adjustments This first picture is of the accelerator pump diaphragm housing, held onto the front of the carb with four screws. Remove drain tube (D) from drain nipple (B). Tip carburetor upside down and shake gently. So i have a 2004 yz450 and it needed a carb cleaning. I thought it might have been because I tipped the unit back on its handles to look at the auger assembly but it did it again. Remove the hose input to the carb and see if it's dripping there. If your water heater is not completely clogged, drain whatever water you can from the drain valve and leave the water inlet valve open. Carburetors may having sticking Needle Valves, leaking Gaskets, deformed Valves and bad fuel Pump Diaphragms or plugged screens. I checked that the drain screw was tightened all the way, and it was. All it takes is a small pin size leak and the fuel station nozzle will start to drip gas slowly. On all models, move the governor lever until carburetor throttle shaft is in wide open position, then tighten governor lever clamp screw. A leaking radiator stop cock or valve occurs when the spindle packing within the valve wears out or is damaged. The rubber manifold between the carb and the cylinder head can crack over time. So i got a 1982 yamaha xj650 from a coworker that was sitting for about a decade. I have located a fuel leak, as there is fuel in the. Either for the environment or your pocket. It was marked to indicate correct fuel level/float height. Open the drain screw 1/4 turn and apply vacuum to the drain screw nipple using your Harbor Freight sucker #92474. Fuel Drain Valve Kit. I also smell fuel after topping off the tanks at the helm. So, on the CB400F, should the fuel exit via the overflow tubes when the drain screws are open, or does it come out around the drain screw, making a mess of the engine cases. Tools you'll need. Mine is a single drain for the carb bowl. There should be a little screw on the bottom of the bowl to open and close it (for the purpose of draining the bowl). A6 / S6 (C5 Platform) Discussion - A6 2. Twist protruding end of governor shaft counter-clockwise as far as possible on vertical crankshaft engines, clockwise on horizontal crankshaft engines. Hi, I am getting close to completing the transplant of an AGG engine into my Transporter thanks to a lot of help from people on this forum. It is can be almost instantaneous depending on tilt angle. This screw typically has an o-ring, and yours does. Remaining mounting parts to be found in fuel tubing (FT) option. The screw to open the bowl drain tube is completely screwed in but the gas continues to leak. Post back with your numbers and I'll check if you have the affected tank. The float valve is in charge of letting more fuel into the bowl from the fuel line when needed. I had to make a quick cut this afternoon, opened the tank to see how much gas was in it and it was empty. There should be a screw on the bottom of the carb float bowl. Rules, New Member Introductions, and Forum Information maybe your carb drain screw is upen its on the. Turn off the gas. Float Bowl. I checked to see where it is leaking from, no question about it, it is leaking from the drain tube that is attached to the fuel bowl. 5 In Stock - Ships Immediately. I acquired an 85' Honda ATC250SX as a family heirloom from my Dad and it's been sitting in the garage for over a year without being started. Rarely there is a leak from the area of the metal pipe the goes into the side of the carburetor; this is where the fuel hose pushes onto. it went from two drops of fuel to a bloody waterfall. A leaking fuel pump is also a problem, but that necessitates the. As it leaks the carb float falls and the carb refills. The float chamber drain screw is then loosened to fill the tube with fuel. As a guest you can view the forum and photo galleries, but you have to register before you can post or view attachments. Remove any portable fuel tank from the boat for refueling. Drain Hose Length (MM): 435 Fuel Pump Type: Inline Breather baffel fabricated part of cover. Sep 22, 2012: fuel pours out NEW by: Monte would if I don't have a drain plug. If you don't want to remove the carburetor just open the float bowl drain screw and drain the float bowl into a handy container. Find a drain pan and drain the fuel by inverting the carburetor. If the carb is overflowing and leaking, there has to be a problem with the float level setting, or the needle valve not seating properly when the float is all the way up. If you take the float bowl OFF then you can fill it with gas and see if the drain screw is causing the leak OR if it is the overflow tube. It's a mess really. Should look at getting a carb kit there only approx. Now I havent replaced my fuel pump in 20 years or so, it may not be pulling as good a suction as it should, but still the damn bowls shouldnt drain in 24-48 hours regardless of pump. Initially it will be fine and depending on how much is leaking in and if the car is consuming fuel faster then the leak. I cleaned the carb, but the carb still leaked. A water heater located inside a mobile home, such as in a closet or alcove with no outside access, must be sealed-combustion-type so that there is no connection between the heater's intake and exhaust and the home's ambient air. Marpac 7-0351 - $8. You'll notice that your carbs are covered with an air silencer. I have noticed that my first tank in the front tank, of fuel and i am at 1/4 tank and have about 140 miles on trip meter. After looking at it again today and thumbing through the manual, I found that the float bowl has a drain screw and hose. Fuel has been leaking in this area so the drain valve was replaced and torqued to. Typical carburetor overhaul: 1) Turn the tank petcock to off and drain the fuel from the lower bowl of the carburetor. IT MAY NOT this time. the around the fuel filler. I loaded it in the back of my truck and to keep it from leaking all over my bed it plugged the hose with a golf tee. if that area is dry, you probably have a hole rusted through somewhere. Then disconnect the fuel hose and squirt some aerosol carburetor cleaner into the fuel hose to fill up the float bowl again. I cleaned out the carb and put it back together (first time ever) and it started and ran, but the throttle was not working so I took off the carb cap and aligned the throttle sleeve properly and put everything back together and it started once and stalled and now won't start but gas is leaking from the drain tube on the bottom of the bowl. It is the first thing to replace. Do anyone have any ideas for me. At this rate Im looking at 8-9mpg, maybe 10 if i am lucky. It is can be almost instantaneous depending on tilt angle. Remove the vacuum plug holes in each carb body and screw in the vacuum gauge adapters. Just tighten the screw to stop the fuel from draining out. Remove the carburetor mounting bolts, carburetor and insulator. Brand New ATC 185S Carb Leaking From Drain Tube Got a new carb for the 185S and no matter what I do it leaks gas out the bottom drain tube. The carb and parts are soaking in carb cleaner as I. that's why some guys report fuel in the airbox. A fuel level check may be in order here. Inexpensive HMMWV Fuel Tank Drain Plug Replacement I drained the very old fuel in my new-to-me Humvee this weekend and noticed that my old drain plug could just be plucked out with fingertips, the screw locking mechanism was overtightened and the end of the rubber was broken off. ok honda was nice enough to put an access panel on the floor of the van so you dont need to drop the fuel tank. Button it up and move on to the bottom of the carb. Whether your drain plate is damaged, warped, or leaking on your Type 1 engine, or you're building and engine from scratch, this billet aluminum drain plate is a nice touch. Drain and replace the gas with new. check this video out at around 4:00 mins tells you how to fix over flow problem its a 2t carb but your ft carb float , floot needle work the same way make sure the spark plug is gap right and new,. I once watched a carb guru work his magic on an O320 carb, he made a gizmo that would screw into the bowl drain threads, it had a rigid clear tube that bent up along side the bowl. this enabled him to check float level on a carb while still mounted on the aircraft. Remove the spark plug. Also, if it’s milky in color or smells or looks burnt when you’re checking it, it’s time for a change. The screw has a (I believe) tapered seat which allows one to somewhat regulate the flow from the drain port on the float bowl. Install and tighten lock screw. Almost guarenteed the float stuck from having no fuel in the bowl. Supporting safety and reliability aboard, Beckson pry-out and screw-out deck plates in all sizes are now certified by independent lab testing to exceed FIVE certifications! ABYC H-3 Watertightness, ABYC H-4, NEMA 250 6P Submergence, ISO 12216 and ISO 11812. The carb float bowl overflow, and the carb drain are the same thing. Remove the carburetor mounting bolts, carburetor and insulator. Is it possible to purchase such a petrol tap inclusive of all of the cork and other washers?. 5) Small fuel tubes inter-connecting the carbs contain plastic and rubber components. Its free to use too!!. Make sure that the valve shaft is centered in both o-rings. Float Bowl Drain Screw: AS568-009 (7/32″ ID x 11/32″ OD) It was supposed to be easy to maintain and not leak fuel, so that carbs were to sit horizontally. They started making Rochester Quadrajet 4 barrel carburetors in 1965. Ford Lehman 2715E Air In Fuel @ Last Bleed Screw The injector drain pipe can be a problem on these engines, usually leaks fuel into the sump, and shows up with. Since this isn't a safety issue, you could screw a brass garden hose cap on to the end of the valve to stop the leak. This chart is intended to be a helpful guide when troubleshooting your carburetor. turns out the fuel pump had several hair line cracks on the top. The fuel valve can stop sealing for two basic reasons, a piece of crap is preventing the valve from closing, or the rubber tip on the valve has gone bad due to age or fuel additives. DO NOT fill the drain hole with silicone or sealant. Brand New ATC 185S Carb Leaking From Drain Tube Got a new carb for the 185S and no matter what I do it leaks gas out the bottom drain tube. So initial approach is to jack up the right side of the car and remove the right rear wheel for easy access. I took the drain screw out, blew into the over flow line to blow out the gas from the carb, tapped the carb a few times with a wrench to make sure the float wasn't stuck, put the drain screw back in, and voila, no more over flow! If it just started to do this on you randomly, I would try these first and see if it works. Disconnect the fuel hose, air vent hose and from the carburetor body. The carburetor is made of aluminum and will not take rough treatment very well and will strip, mar or even break if too much force is used. One of the more common questions we get concerns either the overwhelming smell of gas coming from the carburetor or fuel leaking out of the bowl or overflow. BlueDevil offers a variety of easy-to-use car care products to stop transmission, oil, and head gasket leaks and prevent, repair and maintain your vehicle. If a leaking gas valve or carb float needle cause gasoline to fill the engine crankcase and you attempt to run the bike, the fuel is then pumped through the system washing oil from vital areas such as bearings. Another fuel-related problem is stale gas that has lost its ability to burn. 23 bucks and it would save you a lot of grief in the long run. Inspect the carburetor for cracks or corrosion. The idle mixture screw can have an affect on it as well. I'm pretty sure its the gy6 carb thats the only one i've seen with the carb drain at the bottom of the bike. Float Bowl Drain Screw: AS568-009 (7/32″ ID x 11/32″ OD) It was supposed to be easy to maintain and not leak fuel, so that carbs were to sit horizontally. The blue spring will increase your fuel pressure from about 40 psi to around 60-65psi. The screw next to the black pipe (the one that's leaking) is the drain screw. 2) the carb is leaking out the drain tube. Re: Why would a freshly overhauled carb be leaking? You need to check you oil VERY well. One way to prevent this problem is to close the fuel shut-off and drain the carburetor. Mine was leaking and what I did was this: 1) Closed the fuel valve 2) Unscrew the screw that's on the bottom of the carb to drain all the fuel within the bowl 3) Tightened the screw that's holding the carb to the engine I haven't had a problem since. Carburetors can be cleaned with a verity of products and some elbow grease. My suggestion — buy new 7. it is leaking from the center of a large brass screw. Carb pilot screws leaking? and fairing question and the pilot screws leak when I unscrew them the recommended 2. While the 7. The float needle valve is responsible for regulating the flow of fuel into the float bowl. ok honda was nice enough to put an access panel on the floor of the van so you dont need to drop the fuel tank. True as that may seem sometimes, the simple fact is, if your Amal carburetted British motorcycle isn't running as well as it should, a quick checkup and rebuild of the Amal Concentric carburetors might be just what the. check this video out at around 4:00 mins tells you how to fix over flow problem its a 2t carb but your ft carb float , floot needle work the same way make sure the spark plug is gap right and new,. Rodd: I can't recall exactly where this was oriented on the pump, as this was the first time I've seen it. Used by first response emergency marine rescue operations, Stay Afloat stops water immediately. Zenith Model A Ford Carburetor Restoration Worksheets These worksheets are evolving as a sequential guide to help Model A Ford owners restore their Zenith carburetors. smear plenty of the mush on the threads of the drain plug and screw it into the tank. Remove the screw then replace it after the fuel drains. Any ideas would be much appreciated. From what I understand in your post you have fuel draining out of the carb drain line. A small adjustment makes for a lot of fuel, think of it like a clock, 1/4 turn would be from 12 to 3, so you want to go less than that. The only difference is it takes a screw driver instead of a Allen wrench to tighten or remove. gas leaking from carb bowl, how to put a new petcock in a tw200, leaking petcock xt225, remove petcock tw200, screw for yamaha tw200 fuel valve petcock, tw200 puddle of gas, xt225 petcock leak, yamaha xt225 fuel bowl drain leaks, zx6e carbs leaking. There is a screw/drain valve and a "O" ring associated with the drain valve. At this point there should just be the main threaded rod and three (maybe four) bolts supporting the tank to the body, and of course the bloody filler neck. 5-3 turns!! The drain screws are phillips head. Separate expansion tank: 1. it went from two drops of fuel to a bloody waterfall. The pump valves have to be seeping to do that. One of the common problems with an oil fired furnace are the fuel pumps and their need for replacement. Close the drain screw, close the valve on your fuel source, then drain the float bowls. Never drink and drive. I ended up just taking the carb apart today since it's leaking somewhere for some reason. Just screw in the Hose End to the EZ Oil Drain Valve and tighten with a small wrench. You may now pull the carburetor off. I have an issue with static setting of the tab on the float tang. If you keep your fuel tank more than half full you should have less problems with bad gas. I strongly. N-Series Sediment Bowl - Fix for Leaking Valve. How to repair a leaking carburetor float bowl. When I untucked them, maybe a 1/4 ounce of fuel poured out of them. Make sure the drain screw is seated, its accesible from the left side of the bike (most of the time) and at the bottom of the carb. I cleaned out the carb and put it back together (first time ever) and it started and ran, but the throttle was not working so I took off the carb cap and aligned the throttle sleeve properly and put everything back together and it started once and stalled and now won't start but gas is leaking from the drain tube on the bottom of the bowl. The rear float bowl has a leak just above the upper right rear corner where the, #49 Fuel Line Tube, ends, there is a, I will call it, a small flat freeze plug approx. I loaded it in the back of my truck and to keep it from leaking all over my bed it plugged the hose with a golf tee. This filter is normally located between the main fuel tank and the engine's primer /lift pump. Do as Rocky suggests and remove the bowl and check the drain screw for debris or damage. 23 bucks and it would save you a lot of grief in the long run. Then gas started running out of the drain at the bottom of the carburetor. If you don't want to remove the carburetor just open the float bowl drain screw and drain the float bowl into a handy container. geartrain repair is necessary. I've removed the carburetor and cleaned the bowl, but with the drain screw secured fuel continues to pour from the overflow. The older Techumpseh engines had a seperate bowl drain. Your fuel path should now be complete. Your carb doesn't appear to have an adjustable floatI've never torn down one that didn't. any suggestions?. It is used to drain dirt from bottom of bowl. R69S carburetor leak and heating on one side It appears that my carburetor float needles are not sealing properly as fuel leaks from the idling mixture adjustment screws after the engine is shut off and for a while after I shut the fuel petcock. (Drain plugs, speedo pick-up, livewell thru-hull. Re: Fix your fuel leak from filter drain valve [ QUOTE ] ok i know where the 2 torx tip screws are and i have my o-rings in hand. It is can be almost instantaneous depending on tilt angle. Or it may be due to a poor casting. Check the free stuff first. There was fuel coming out of this hose even though the screw was closed?? What had happened was one of the needles in there had gotten a little dirt when we reattached the fuel hose, we just kept tapping the carb until the needle settled and it stoppped the fuel from leaking. Post back with your numbers and I'll check if you have the affected tank. First, get a good look as to where the gas is leaking from. Been a while. I thought it might have been because I tipped the unit back on its handles to look at the auger assembly but it did it again. In the old days, there was an overflow tube in the carb that directed the fuel directly to the ground in case of this exact problem. Over the years, Marvel-Scheblers's predecessors, Volare Carburetors LLC, Precision Airmotive Corporation, Facet Aerospace Products Company, Borg-Warner and Marvel-Schebler ® Carburetor Company, have issued service bulletins, service letters, and other service information in a variety of formats. You might be. also make sure the drain screw on bottom of float bowl/carb is sealing properly all of the carbs tiny drain screws they put on get the heads stripped out and people cannot loosen or tighten them easily which will also cause it to leak fuel. Fuel has been leaking in this area so the drain valve was replaced and torqued to. Carb Float Needle. 03 525 EXC (RFS motor) with a gas leak coming from the vent tube. If the filter is fitted with fuel shut off valves on either side, it is advisable to close them when changing the element. Then you can get to carb, idle screw, mixture screw and the idle jet if needed. It looks like it comes from under the tank somewhere and runs through the plastic cylinder cover and dumps next to the carb, it is not connected to anything.