Small Engine Repair: How to Check for Spark on a Tecumseh, Honda, Briggs & Stratton 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.**

Most people check for proper engine spark by removing the spark plug, attaching the plug wire and grounding the plug to the engine while spinning the engine over and looking for a spark to jump across the spark plug gap. This method is not always reliable. The amount of voltage needed to jump the spark gap set at .030″ with the plug removed from the engine is about 2000 volts. The amount of voltage required to jump the same plug gap with the plug installed in the engine and operating under operating conditions is about 8000 volts, so it is possible to see a spark with the plug removed, but not have a spark with the plug installed.

A more reliable method is to remove the spark plug wire cap, and hold the spark plug wire approximately 3/16″ away from the spark plug and spin the engine over. A good ignition system will produce a orange/blue spark from the end of the spark plug wire to the spark plug. The problem with this method is it is easy to get shocked and hard to turn the engine over while trying to hold the end of the plug wire 3/16″ away from the plug. The benefit of this method is it is more reliable then the first method and doesn’t require purchasing any special tools.

Another method for checking the ignition for proper spark is to purchase the Briggs & Stratton Spark Tester, part #19368. This tool can be used to check for spark with the plug removed and using no hands, so the engine is easy to spin over and there is no risk of being shocked. The tool can also be used to view the spark while the engine is running. This is very valuable when trying to diagnose a rough running engine or a engine with intermittent problems.

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How To Find Your Model Number | Echo, Toro, Wright, and Scag



Josh at Russo Power shows you where you’ll commonly find model numbers on different types of machines.

Russo Power Equipment sells a wide variety of parts and equipment. Check us out at http://www.russopower.com/

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Walbro Carburetor Model Number Locations!



Find more videos or parts for your Walbro Carburetor at http://www.midwestmowerpro.com/p/Walbro?aribrand=WLB&utm_source=YouTube

Use this video to learn how to locate your Walbro Carburetor Model numbers!

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How to Check Crankcase Pressure on a Kohler, Briggs & Stratton, Tecumseh Lawnmower 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.**

In this video I show how to check if your lawnmower engine is creating a vacuum in the engine’s crankcase when the engine is running. When the piston moves up and down, the crankcase volume is constantly changing. This change causes the crankcase pressure to change, but because the crankcase breather valve will let gases in the crankcase escape, but not let air in, the pressure in the crankcase should be less than the ambient pressure.

If your crankcase breather valve is not working correctly, it can cause the pressure in the crankcase to rise. Also, a worn engine will let combustion gases escape past the piston and enter the crankcase. This is called “Blow By” and will cause the pressure in the crankcase to rise.

Increased pressure in the crankcase can cause excessive oil consumption as well as other problems.

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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.

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Small Engine Repair: How to Calculate or Mix 2 Stroke Oil with Gasoline or Petrol



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 calculate to correct amount of 2 stroke oil to add to your gasoline to get a certain ratio.

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Small Engine Repair: Honda GX31 Carburetor Installation and Fuel Line and Fuel Filter Replacement



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 reinstall the carburetor on a Honda GX31 engine, and install new fuel lines and fuel filter.

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