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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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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.





Small Engine Repair: How to repair a Lawn and Garden Tractor Tire
Visit http://www.thesmallengineshop.net In this video I install a tube in a tubeless tire with a cut in the sidewall. Normally, tires with cracks or punctures in the sidewall should be replaced, but since this is a garden tractor tire, which never goes over 5 mph while mowing the grass, and a blow out does not place the operator in any danger, than a tube can be used to repair the tire. I would never attempt a sidewall repair on a tire used on a vehicle licensed to be driven on public roads. Tire repairs should be limited to the tread area of the tire within 1 inch of the outer edge of the tread. Tires will holes greater than 1/4" should be replaced and not repaired. Often times people will spray fix-it flat into a tire to stop air from leaking from the tire. Fix-it flat and other brands of tire repair in a can are flammable. For this reason, care should be taken by the technician doing the tire repair. The process of repairing a tire using a plug involves reaming out the hole with a reamer tool. When the metal reamer tool is inserted into the tire, it is possible for the reamer tool to make contact with a steel belt in the tire and cause a spark. This can cause the tire to explode if it has been filled with Fix-it flat, and technicians have been injured and some have lost their lives from tire explosions. The solution to this problem is to remove the tire, clean it out and do all tire repair work with the tire off the rim.





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





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.





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





Small Engine Repair: How to Check a Solenoid Fuel Shut Off Valve on a Kohler V-twin 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.** Solenoid fuel shut off valves are used to close the main jet or main fuel circuit in the carburetor when the key is turned off. The solenoid valve works by using a spring loaded plunger to press against the main fuel circuit passage and prevent fuel from entering the passage. When the key is turned on a magnetic field is generated in the solenoid and the plunger is pulled into the body of the solenoid, thus opening the main fuel circuit. By closing the main fuel circuit when the key is turned off, the fuel in the carburetor is prevented from entering the engine, and this prevents unburned fuel from entering the engine while it is shutting down, and this helps prevent engine back fires. When the engine is stored with fuel in the carburetor for long periods, there is a risk of the old fuel causing contamination and corrosion to develop on the solenoid plunger causing it to freeze and no long move freely. When this happens the plunger is stuck in the fully extended position, and this closes off the main fuel circuit not allowing fuel to enter the engine when the key is turned on, and this prevents the engine from starting.





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





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.





Small Engine Repair: How to Determine Piston Position and Stroke on a 4 Stroke OHV Industrial 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.** The 4 stokes of a 4 stroke or cycle engine are: 1) Intake: During the intake stroke the piston moves from the very top of its stroke (TDC-Top Dead Center) to the very bottom of its stroke (BDC-Bottom Dead Center), and the intake valve opens at the start of this stroke letting in a fresh air and fuel mixture, and closes near the bottom of this stroke. 2) Compression: During the compression stroke the piston moves from BDC to TDC compressing the fresh air and fuel mixture. 3) Power: The air and fuel mixture is ignited at the start of the power stroke. The heat from the air and fuel burning forces the piston to move from TDC to the BDC. 4) Exhaust: During the Exhaust stroke the piston moves from BDC to TDC, and the Exhaust valve opens at the start of this stroke to let out the burnt air and fuel mixture from the power stroke, and closes at the end of this stroke. After the 4 strokes or cycles the process repeats in this order. If you know the 4 cycles of a 4 stroke engine you can determine what stroke the piston is in and roughly know where the piston is by viewing the intake and Exhaust valves. Thank you for Watching!





Small Engine Repair: Inspecting the Drive System on a Scotts Self Propelled Walk Behind 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.** In this video I inspect the drive system on a Scotts self propelled walk behind lawn mower. Scotts does not manufacture their mowers, and the mower shown in the video is actually manufactured by Murray. Scotts also has John Deere manufacture mowers under the Scotts label. The self propelled wheels on this mower are actually plastic ring gears with tire tread, and the most common problem you will find with this type of system is the metal axle gear has a tendency to wear down the plastic ring gear, and cause the two gears to slip. It is an easy fix, and each wheel only requires removal of one nut and washer to remove the worn wheel and replace it with a new ones.





Toro CCR Snowblower carburetor rebuild - How to troubleshoot and repair small engine carburetor
Toro CCR Snowblower carburetor rebuild How to troubleshoot and repair small engine carburetor Carburetor cleaning Velvethamma YTGG





Easy Carb Diaphragm Fix
'74 Honda CV Diaphragm fix.





NAPA Service Tools Cylinder Leak Down Tester
Designed To Measure The Ability Of An Engine Cylinder To Hold Compressed Air Using Shop Air Pressure & Supplements Compression Tester, Pinpoint Bad Valves, Worn Rings, Cracked Cylinder Walls, Blown Head Gasket; Furnished w/ Rubber Boots To Protect Gauges, Includes Precision Regulator w/ Combination Adapters, 26" Hose Assembly, 2 1/4" Special Gauge Has Multi-Colored Band For Measuring Low, Moderate & High Leakage; Scale Range Up To 100%, Second Gauge Has Dual Scale w/ Ranges Up To 100 psi & Up To 7 Bar, Allows Technician To Monitor Input Airline Pressure NAPA part number: SER CLT-2





REGULACIÓN CARBURADOR DESBROZADORA CORTASETOS
EXPLICAMOS: 1)Las principales diferencias entre los carburadores mas habituales de maquinaria de jardinería, forestal y agrícola. 2) Enseñamos los parámetros y puntos de regulación. Hay mas vídeos e





Small Engine Repair: How to test the Ignition Switch or Kill Switch on a Honda GC 190
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 you haw to use a ohm meter to test the ignition switch in a Honda GC 190. The ignition switch is a simple on/off switch that connects to the ignition coil and engine ground. When the ignition switch is in the ON position the switch is open and does not allow current to flow through the switch. When the ignition switch is in the OFF position the switch is closed and allows current to flow from the ignition system through the ignition switch, than to ground. This grounds out the ignition system and prevents spark at the spark plug, thus shutting down the engine. An ohm meter is used to test the ignition switch for continuity. When the switch is open, than no current can flow through the switch and the ohm meter will read infinity, which means infinite resistance. When the switch is closed or in the OFF position current will flow through the switch. The amount of resistance created by the switch in the OFF position should be insignificant, so the meter should show zero resistance. If you do get some resistance when measuring the ignition switch in the OFF position, than check the connections for your meter leads and the ground for the ignition switch, or the contacts within the switch can cause a high resistance reading. If the contacts in the switch are bad, than replace the switch. Thanks for watching!




Which car is faster? Which Car is Faster?





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