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Adjust a Homelite chainsaw carburetor by turning one of the screws designed to affect its speed and performance. The screws marked H and L are high and low speed adjustments, respectively. A turn of the screwdriver on either one makes the chainsaw run a little better or worse. Listen for changes.
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A gas-powered string trimmer can overheat if the engine's air passages are blocked or the carburetor is running lean. These are problems you can usually fix.
Read MoreThere are several common reasons why your lawn mower might die when you're in the middle of cutting your grass. There may be bad fuel in the gas tank, a loss of air flow to the engine caused by overgrown grass or a dirty air filter, or your carburetor needs to be adjusted or cleaned.
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When your Stihl string trimmer has no spark, you'll need to check the spark plug for possible replacement and, if that doesn't help, check the wiring and possibly have the flywheel and ignition module serviced.
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If you notice your string trimmer leaking fuel, it could be due to problems with the fuel tank, fuel lines, seals or carburetor that forms a leak in the system.
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A Homelite chainsaw carburetor adjustment needs to be performed on all three speeds: idle, low and high. Before you attempt any adjustment, be sure that doing so will not void your Homelite warranty. Adjusting the carburetor on idle is the safest and easiest of the three speeds.
Read MoreLawnmowers consume oil during normal operation, but if yours seems to be going through more oil than expected, it can indicate a problem with the oil itself, or even the lawnmower's engine. There are a few reasons why this might be happening, many of which you can check (and fix) yourself.
Read MoreA Husqvarna weed eater operates on the same principles as any other internal combustion engine. These engines require enough fuel to mix with the right amount of air and enter the combustion chamber at the right moment for the spark to ignite the mixture.
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Three critical elements combine in a lawn mower small engine to allow it to start and run. If the lawn mower has spark and gas it’s still missing the crucial air element. Air mixes with the fuel for better combustion and it also keeps the engine cool enough for continued combustion.
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As the lawn mower engine burns gas inside the cylinder it generates an enormous amount of heat. This heat must disperse out of the engine to keep the temperatures cool enough to maintain the proper pressures for all the moving systems on the lawn mower.
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The recoil starter assembly on a lawn mower allows the operator to start combustion on the mower's engine. When the recoil starter system is engaged, the operator can crank the engine by hand and get it going fast enough to start all the internal operating systems on the mower.
Read MoreThe engine on a lawn mower requires a constant stream of oil into the crankcase and piston. If oil leaks out of the tank or pump before it reaches the engine, the engine is at risk of severe damage. Stop the lawn mower immediately if you suspect an oil leak, troubleshoot the problem and fix the leak.
Read MoreWhen the trigger is pressed and the throttle is increased on a backpack blower, a metal wire pulls open a vent on the carburetor, allowing more fuel into the passages. The increase in fuel translates into an increase in engine speed.
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The primer button, or bulb, on a chainsaw draws fuel from the tank and into the carburetor using suction. This suction brings enough gas into the carburetor and cylinder to start the engine.
Read MoreA gas-powered leaf blower uses a combustion engine to generate power. Normally, when this engine burns gas, the vapors and heated gases are vented away, so the engine can stay cool enough to keep running.
Read MoreStumps, the leftover stubs of felled trees, can get in the way, trip people walking by and are, generally, an eyesore. Ripping stumps out of the ground with an automatic machine will cost a lot of money in extra rentals and equipment.
Read MoreEvery Stihl trimmer that uses a nylon cutting string needs a properly sized replacement string to work. Use string that’s too large or long, and the gearbox, drive shaft and engine can get damaged. The overloaded string may also jam up and fuse together inside the spool, which can also lead to damage.
Read MoreMcCulloch gas chainsaws use a carburetor with needles that regulate the inflow of gas during different engine speeds. These needles can be opened and closed slightly through adjusting screws on the outside of the carburetor.
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Chainsaw engines require a premixed fuel to keep them running at the proper temperatures. The oil that’s added to the fuel lubricates the piston and crankshaft, but it also keeps the engine cool enough to keep running. Without this oil in the gasoline, the piston will seize and the engine will be ruined.
Read MoreChainsaw engines run at high temperatures, usually in the summer, so they can quickly overheat. To prevent chainsaws from overheating they must be cleaned regularly. The cylinder and starter both contain air intake areas that pull cool outside air into the engine when it’s running.
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Many problems can cause your Stihl chain saw to stop starting. These problems range widely in complexity and costliness. However, these two-stroke engines were designed to minimize the number of parts that can lead to engine failure.
Read MoreA Stihl chainsaw uses a star-shaped sprocket to help turn the chain during operation. This drive sprocket comes under enormous stress and friction from the high speeds the chain spins at. If this sprocket won’t turn inside the clutch, the chain won’t spin along the bar and you can't cut.
Read MoreThe cutting string inside your Ryobi trimmer wraps around a spool, which connects to a spring. When you bump the head during operation this spring pushes on the spool to feed out more string. If the spring has lost its flex or the spool isn’t wound properly, the string will stop feeding out properly.
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Over the winter, or for any period exceeding three months, you will need to put your string trimmer into storage mode. You can’t just set it on a shelf, forget about it four five months and expect it to run like new when spring arrives.
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When your chainsaw quits after it gets hot, you either have a problem with gas flow being restricted into the engine or with the spark. This is a common occurrence on older-model chainsaws. By replacing your spark plugs and keeping your gas lines clear you can reduce the chances of this problem recurring.
Read MoreAccording to Stihl’s engine service manuals, when the engine has no spark or a dramatic, sudden loss in power, the problem could lie in the ignition system. The ignition system ignites the fuel in the engine for proper combustion.
Read MoreSmall engines require a certain amount of compression to drive the piston and turn the crankcase. Most small engines require at least 90 pounds per square inch (PSI) of compression when hot, and 100 PSI when cold. If air is leaking somewhere in the engine, you will notice a drop in compression.
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