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Small Engine Repair: Checking Fuel Pump Diaphragm & Inlet Needle on a Diaphragm Carburetor

Visit http://www.thesmallengineshop.net **Always follow the instructions in your repair manual when doing repair or maintenance work on Outdoor Power Equipment. Manuals can be found at the manufacturers website.** In this video I show how to check the fuel pump diaphragm and inlet needle for leaks on a diaphragm carburetor. A diaphragm carburetor is used on hand held power equipment, and are popular because they will work in any position. All chainsaws, trimmers and blowers that I have seen use a diaphragm carburetor. To check the fuel pump and inlet needle, pressurize the carburetor to 10 psi through the fuel inlet. The carburetor should hold the pressure fairly steady, and if it doesn't than there is a leak around the fuel pump diaphragm or inlet needle. You can pin point the leak by dunking the carburetor in water while it is pressurized. If the leak is around the fuel pump diaphragm, than either the fuel pump diaphragm, fuel pump diaphragm cover or the body of the carburetor is at fault. If the leak is coming out of the venturi, than the inlet needle or seat is faulty. Tools used: - 3/8" wrench to remove carburetor - Mityvac to pressurize the carburetor - Needle Nose plyers Specifications: - Carburetor should be pressurized to 10psi through the fuel inlet. Never exceed 10psi. Its important to run fuel through the carburetor before testing. A wet carburetor will hold the pressure better than a dry one.


 


More Videos...


Small Engine Repair: Cleaning Carbon Buildup on the Exhaust Port & Muffler on a 2 Stroke Engine
Visit http://www.thesmallengineshop.net **Always follow the instructions in your repair manual when doing repair or maintenance work on Outdoor Power Equipment. Manuals can be found at the manufacturers website.** Small engines used in outdoor power equipment often suffer from carbon build up in the cylinder head, Exhaust port and muffler. The is more common in 2 stroke engines than 4, but it does occur in both. In this video I inspect the Exhaust port and muffler on a Echo SRM-230 trimmer. The muffler was very clean, but the Exhaust port had carbon build up that blocked half the port. To clean the port, rotate the engine until the piston skirt is covering the Exhaust port, and take a screw driver and lightly scrape the port to remove the carbon. Than take compressed air and blow out the port to remove the carbon pieces. Mufflers on small engines are usually sealed units, so cleaning them is very difficult if not impossible. Its easy and less expensive to replace a sealed muffler with a new one. Some mufflers have screens, which can be cleaned with a wire brush and compressed air. This trimmer was run by the previous owner without a trimmer line knife attached to the deflector. This allows the trimmer line to extend beyond the manufacturers recommended length, and this causes a excessive load on the engine. I believe this is primary responsible for the carbon build up on the port.





How to clean out the carb on a small engine
This happens to be a Craftsman 4.0hp engine, but this procedure is the same on most small engine carburetors





How a carburetor works, schemes and explanations
This video explains, not in too much detail, how a 28mm Walbro diaphragm carburetor works (using mainly schemes to point out what happens inside). It explains what occurs at the venturi, what the butterfly valve is for, how the needle doses the amount of fuel, and how does the diaphragm slide adjust itself.





HOW TO - Two Cycle Carburetor Cleaning / Rebuild (Part 1 of 2)
Since this is only an instructional video series I was not going to use any carburetor cleaner. Basically i'm explaining how to check the pump diaphragm, & metering diaphragm as well as how to clean a two cycle carburetor. K10-WAT & K20-WAT rebuild kits are for all WA & WT series Walbro carburetors. Most of the time you can get away with ordering a K10-WAT if you only need to replace the diaphragms. If you need to do a complete rebuild order K20-WAT. There are special tools for checking both Zama, and Walbro carburetor metering levers but I have found that a metal straight edge ruler is just as accurate. WALBRO METERING LEVER TOOL : http://compare.ebay.com/like/110600202910?var=lv<yp=AllFixedPriceItemType s&var=sbar&rvr_id=216029650572&crlp=1_263602_309572&UA=WVF%3F&GUID=9170fef0 12e0a0645631a321ffbb97bc&itemid=110600202910&ff4=263602_309572 ZAMA METERING LEVER TOOL : http://cgi.ebay.com/NEW-ZT-1-Zama-Z-Carburetor-Metering-Lever-Tool-/1106001 90012 This rebuild / cleaning procedure will also apply to carburetors without a purge bulb. I will do a proper video when I have an actual rebuild or cleaning.





try to crank a rusty engine.
NFG wdb108 280se merc. one last time for fun.





How To Fix Any Small Engine Tips
in this video i will be showing you guys some tips for fixing any small engine





husqvarna 357XP
husqvarna 357XP bei einer buche mit 7 fm!!





Small Engine Repair: Adjusting Valves or Valve Lash on a Tecumseh Lawn Mower
Visit http://www.thesmallengineshop.net **Always follow the instructions in your repair manual when doing repair or maintenance work on Outdoor Power Equipment. Manuals can be found at the manufacturers website.** This video shows how to adjust the valve lash on a Tecumseh engine. Manuals for all Tecumseh engines can be found online and for free. The method used to adjust the valves in this video is similar to the method used on other industrial engines that require valve adjustment and have rocker arms. Tools Used: - Feeler Gauge - T20, T30 Torx Wrench - 7/16" Crowfoot Wrench - 3/16" Allen Wrench - Torque Wrench Specification: - Tecumseh Engine Model OVMR120 - Valve Lash for both Intake and Exhaust Valve is .004" - Torque Spec for Lock Nut on the Valve Lash Adjustment Bolt is 120 in. lbs - Torque Spec for Rocker Cover Bolts is 40 in. lbs





Tecumseh carburetor rebuild
I just wanted to get the most important information out there. This thing will run fine, as soon as everything is done soaking!! Enjoy!





Carburetor Rebuild Basics (Part 1) -EricTheCarGuy
Carburetor Rebuild Basics covers the basics of rebuilding a carburetor. Now there are a LOT of different carburetors out there so this video won't apply to all of them, but it will give you a general idea of what you would be in for if you decided to rebuild one. Me, I like rebuilding carburetors. There's something about mechanical things like carburetors that interest me. How even the smallest part has a big effect on the overall operation of your engine. Since we've gone to fuel injection carburetors have become somewhat obsolete. I'm still a fan though. I may be a little rusty on this stuff since I haven't done this in some time but I hope this video helps you just the same. If nothing else, I hope you're entertained by it. Camera: Brian Kast The best place for answers to your automotive questions: http://www.ericthecarguy.com Related videos. Carburetor Rebuild Basics (Part 2): https://www.youtube.com/watch?v=dprLQcQrAqE If you want to see the full version of this video with additional footage now, become a Premium Member of EricTheCarGuy.com: http://www.ericthecarguy.com/premium-content-streaming-etcg-content The Basics of Carburetor Adjustment: To be added August 8, 2014 Cleaning Throttle Bodies: https://www.youtube.com/watch?v=41yFXjibtLY Solving Performance Problems 1: http://www.youtube.com/watch?v=rsGTeWayqIU Solving Performance Problems 2: http://www.youtube.com/watch?v=sAKwCzUE_9M Re Performance Problems: http://www.youtube.com/watch?v=_vAJi5rLMGY Related articles. Idle issues: http://www.ericthecarguy.com/faq/solving-automotive-idle-problems Performance issues: http://www.ericthecarguy.com/faq/solving-automotive-performance-issues Getting Better MPG: http://ericthecarguy.com/faq/finding-and-fixing-the-causes-of-poor-mpg Discussion about this Video: http://www.ericthecarguy.com/kunena/18-The-EricTheCarGuy-Video-Forum/52544- carburetor-rebuild-basics The best place for answers to your automotive questions: http://www.ericthecarguy.com ETCG FAQ Page: http://www.ericthecarguy.com/faq EricTheCarGuy code lookup: http://www.ericthecarguy.com/obd-code-lookup Facebook: https://www.facebook.com/EricTheCarGuy?fref=ts Twitter: https://twitter.com/EricTheCarGuy Google+: https://plus.google.com/100195180196698058780/posts Information on Premium Membership: http://www.ericthecarguy.com/premium-content-streaming-etcg-content Stay Dirty ETCG Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information.  EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video.  Due to factors beyond the control of EricTheCarGuy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result.  Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not EricTheCarGuy.





HOW TO ADJUST A Homelite Carburetor
this will work for chainsaws,trimmers,leaf blowers,hedgers





Motorcycle Mikuni CV Carburetor Cleaning for Suzuki, Honda, Yamaha Tutorial
Links below. Step by step instruction on how to disassemble, clean and assemble Mikuni CV Carburetors for Suzuki, Honda, Yamaha motorcycles... I hope you find this tutorial informative if long. For parts for your Vintage Japanese Motorcycle, please visit http://z1enterprises.com These guys always have the best prices and fastest shipping. Thank you for watching. Anti Seize Lubricant http://amzn.to/1bKe5HH





How to Rebuild a Zama Carburetor- Echo Backpack blower carb
Time to rebuild the carburetor on this blower, so i made a video of how to do it





Carburetor Adjustment Basics -EricTheCarGuy
In a way this is 'Part 3' of my carburetor series. In case you missed them, here's parts 1&2. Carburetor Rebuild Basics (Part 1): https://www.youtube.com/watch?v=85nszLpbbXY Carburetor Rebuild Basics (Part 2): https://www.youtube.com/watch?v=dprLQcQrAqE If you want to see the full version of the carburetor rebuild video with additional footage now, become a Premium Member of EricTheCarGuy.com: http://www.ericthecarguy.com/premium-content-streaming-etcg-content One of the most important parts of a carburetor rebuild is setting it up properly after you're done. There are also many times where a rebuild may not be necessary and you just need to perform some of these adjustments. Either way, I hope this video will help you should you need to adjust your carburetor. Tools. Vacuum Gauge: http://www.jbtoolsales.com/equus-3620-vacuum-gauge-fuel-pump-tester/#oid=10 02_1 Related videos. Finding Vacuum Leaks: https://www.youtube.com/watch?v=9CPqbaSgcok How To Check For Timing Chain Slack: https://www.youtube.com/watch?v=4_f5ukZVri8 Service Manuals: http://www.youtube.com/watch?v=IN95GLDvGBc Fairmont Drag Strip: https://www.youtube.com/watch?v=hkOdD0P38ps Cleaning Throttle Bodies: https://www.youtube.com/watch?v=41yFXjibtLY Solving Performance Problems 1: http://www.youtube.com/watch?v=rsGTeWayqIU Solving Performance Problems 2: http://www.youtube.com/watch?v=sAKwCzUE_9M Re Performance Problems: http://www.youtube.com/watch?v=_vAJi5rLMGY Related articles. Idle issues: http://www.ericthecarguy.com/faq/solving-automotive-idle-problems Performance issues: http://www.ericthecarguy.com/faq/solving-automotive-performance-issues Getting Better MPG: http://ericthecarguy.com/faq/finding-and-fixing-the-causes-of-poor-mpg Discussion about this Video: http://www.ericthecarguy.com/kunena/18-The-EricTheCarGuy-Video-Forum/52785- carburetor-adjustment-basics#107280 The best place for answers to your automotive questions: http://www.ericthecarguy.com ETCG FAQ Page: http://www.ericthecarguy.com/faq EricTheCarGuy code lookup: http://www.ericthecarguy.com/obd-code-lookup Facebook: https://www.facebook.com/EricTheCarGuy?fref=ts Twitter: https://twitter.com/EricTheCarGuy Google+: https://plus.google.com/100195180196698058780/posts Information on Premium Membership: http://www.ericthecarguy.com/premium-content-streaming-etcg-content Stay Dirty ETCG Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information.  EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video.  Due to factors beyond the control of EricTheCarGuy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result.  Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not EricTheCarGuy.





Small Engine Repair: Adjusting the low speed carburetor circuit on a Ryobi Blower
Visit http://www.thesmallengineshop.net **Always follow the instructions in your repair manual when doing repair or maintenance work on Outdoor Power Equipment. Manuals can be found at the manufacturers website.** This video is about adjusting the low speed carburetor circuit on a Ryobi Blower. On this particular blower the low speed carburetor circuit was adjusted to lean, so the blower would stall when you tried to accelerate the blower from idle to full rpm. The low and high speed adjusting screws on this Ryobi blower use adjusting screws commonly referred to as pac-man screws. Adjusting tools can be found on ebay. Tools Used: - Pac-man tool driver





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