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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.


 


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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 - 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.





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!





How Motorcycle Carburetors work and how to tune and clean them
Here's a link to the kind of carb cleaner I like best (it IS the best) http://www.amazon.com/gp/product/B002ERT666/ref=as_li_qf_sp_asin_il_tl?ie=U TF8&camp=1789&creative=9325&creativeASIN=B002ERT666&linkCode=as2&tag=httpww wyou00f-20 How Motorcycle Carburetors work and how to tune and clean them Check out my other channel here http://www.youtube.com/watch?v=1KKvwMaIotA





Small Engine Repair: Using a Harbor Freight Leak-Down Tester on a Briggs & Stratton 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.** This video is about how to use a Harbor Freight Leak-Down Tester on a small engine. I wasn't able to get the tester to work correctly using the instructions provided with the tester, so I made one change, and the tester seems to work correctly. The instructions say to connect the tester to the engine before you apply compressed air and adjust the regulator, but it didn't seem to work correctly, so I applied the compressed and adjusted the regulator before connecting the tester to the engine. This correction made the difference, and I was able to use the tester to determine the condition of the engine. It would be interesting to hear about other experiences with this tester, so please leave a comment, and thanks for watching.





Small Engine Repair: Rebuilding a Diaphragm Carburetor on a Echo SRM-230 Trimmer Part 1 of 3
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 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





How to diagnose carburetor vacuum leaks on your motorcycle
This is a simple video demonstrating the best method to detect vacuum leaks around your carb boots. Vacuum leaks are a fairly common problem in older bikes, and luckily they can usually be remedied quickly and easily, the first step however is diagnosis. If your bike is running rough, won't rev up or has an irregular idle, before you take off the carbs and open them up, check for vacuum leaks. A vacuum leak occurs when too much air is introduced into the combustion chamber via a failure in one or more of the carburetor boots or other rubber mating surface. When too much air is sucked in, then the bike cannot combust the gasoline efficiently; there must be an optimal ratio. Therefore it is up to you to detect these leaks, and either plug them up or replace the carb boots. In this particular bike, the engine was running VERY lean. Not only did we have vacuum leaks, but the baffles were taken out of the engine, and the previous owner had removed the air filter and neglected to install a new one. This is not only dangerous by allowing foreign material to enter the engine, but it also makes the engine run much hotter, as lean explosions create more heat than regular ones (think about blowing on a fire in your fire place: more air, hotter fire). This can be detrimental to a variety of parts in the engine, and it is a good thing we didn't ride this bike around too much before finding the problem. If anyone has any questions as to why this is important or how to find/repair these leaks, leave a comment and I will respond. Thank you





Motorcycle Repair: Inspecting and Adjusting the Motorcycle Chain and Sprocket
Visit http://www.thesmallengineshop.net **Always follow the instructions in your repair manual when doing repair or maintenance work on a motorcycle. Manuals can be found at the dealer and online.** This video gives a general overview about how to inspect a motorcycle chain and sprocket. The information I give is a general rule of thumb, so the specifications for your motorcycle could be different. Its important to always look in a repair manual for your motorcycle for the correct specifications.





How to clean out the carb on a small engine
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Small Engine Repair: How to Clean and Rebuild a Tecumseh Lawn Mower Float Carburetor Part 1 of 3
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.** The lawn mower in this video is Yard Man walk behind mower with a vertical shaft, single cylinder, 4 stroke Tecumseh engine. The engine model number is TVS105. This video is the first part of a multi-part video series about cleaning and rebuilding a Tecumseh float type carburetor. In this video I show how to remove the carburetor and identify the engine model and specification number as well as the carburetors manufacturer number and date code. Thank You for Watching!





Easy Carb Diaphragm Fix
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small engine carburetor repair
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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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