The flywheel key is a rectangular metal peg that keeps the crankshaft and flywheel aligned when you tighten the flywheel nut. If the mower blade hits an object with enough force to knock the flywheel out of alignment, the flywheel key breaks, protecting expensive parts such as the crankshaft from damage. FLYWHEEL BRAKE The brake applies friction to the circumference of the flywheel helping to stop it quickly.
FLYWHEEL MAGNET FOR IGNITION. A permanent magnet is mounted on the flywheel. Tecumseh Flywheel with fins…. The flywheel may have fins on it that act as a fan when the flywheel spins, or it may have a separately molded fan that is mounted to it. FLYWHEEL MAGNETS FOR CHARGING STATOR. A flywheel may have additional magnets mounted to its underside which rotate around a stator coil for the purpose of generating electric current.
In a generator, you reverse the process: You move a magnet past the armature to create electric current in the coil. A primary coil of perhaps 200 turns of thick wire wrapped around one leg of the U.A secondary coil of perhaps 20,000 turns of very thin wire wrapped around the primary coil. The secondary coil, having 100 times more turns than the primary coil, amplifies this voltage to approximately 20,000 volts, and this voltage feeds to the spark plug.
how does a chainsaw flywheel work Related Question:
How does flywheel work on chainsaw?
The flywheel spins when the crankshaft turns, and when it’s stuck you won’t be able to use your chain saw. A chain saw’s starter rope connects to a pulley, which, through a recoil spring and two pawls, connects to the flywheel. The flywheel connects to the crankshaft through a thin metal piece called the key.
How does a 2 stroke flywheel work?
A two-stroke uses a lighter flywheel than a four-stroke because it fires every stroke, compared to the four-stroke’s every-other firing pattern. Two-strokes don’t have to maintain momentum while waiting for the next explosion, thus two-strokes deliver a snappier and more abrupt style of power.
How do flywheel magnets work?
The flywheel magnet provides an electric charge to the ignition coil, in turn sparking the plug in a small engine. If the magnet has lost it’s magnetic properties or comes loose, the small engine may not start or run properly.
Why is a flywheel lighter in a 2-stroke engine?
No, two-stroke engine has a heavier flywheel. Because it generates more balance force due to one revolution for one power stroke. On the other hand, 4 stroke engines requires heavy flywheel because it generates unbalanced force due to two revolutions for one power stroke.
How do I know what size flywheel I need?
1) COUNT THE NUMBER OF DRILLED AND TAPPED HOLES ON YOUR FLYWHEEL. 2) MEASURE THE DISTANCE FROM THE CENTER OF ONE DRILLED AND TAPPED HOLE TO ANOTHER (MEASURING ACROSS THE CENTER LINE OF THE CRANK SHAFT) [DIMENSION “C”].
How does your flywheel turn?
Engine Start In the engine’s starter motor, a small gear (called a Bendix gear) mates up to the flywheel when you turn the key. The Bendix gear/starter motor combination spins the flywheel, turning the crankshaft and beginning the compression cycle required to start the engine.
Does a flywheel always spin?
So, you might think the flywheel spins all the time. That’s not true. The flywheel does not spin when in neutral. This is because the input shaft that connects to the clutch plate; then to the pressure plate which connects to the flywheel is designed to spin freely when the vehicle is in neutral.
Can you start an engine without a flywheel?
Starting it without a flywheel is not a good practice, and not an easy feat unless you are good at pull starting a V-8… Also the result in an engine that requires the flywheel for balance could be very harmful. The torque converter does not have to be on the engine though.
Can a flywheel cause no spark?
The magnets as North and South on a Flywheel. They are usually even labeled, at least in most Stihls. If they are no longer N/S, even if they have magnetism, they won’t make a spark. So yes, it can occur.
What are the fins on a flywheel for?
Today, the fins on flywheels act almost like fans, cooling the engine by distributing air around the engine block. Learn more about the cooling systems on Briggs & Strattion engines.
Can you Remagnetize a flywheel?
-We can remagentize 2, 4, and 6 pole flywheels. -External flywheels from 92-177 mm (3.6-7.0 inches). -Internal flywheels from 63-100 mm (2.48-3.94 inches).
Why did my chainsaw blade stop spinning?
If the chain is too tight, the blade may not spin when the throttle is engaged, which can cause damage to the clutch or other associated parts. Keep in mind that the tension of the chain will change with heat. As the chainsaw is used and the chain heats up, it will become loose.
How do you know if your chainsaw clutch is bad?
Does the engine loose revs, or the engine keep revving and just the chain stops? If the engine is still running at normal revs, and the chain slows down, then it’s a problem with the clutch. Worn out, gummed up, jammed springs etc. If the engine looses revs under load then it’s more likely a fuel or carb problem.
Why does my chainsaw stick?
Chain tension Indeed, if a chainsaw chain that slackens with wear no longer cuts, it damages the guide, tires the engine and can be the cause of a blockage when it is too tight. In addition, the more the chain saw heats up, the more the tension of the links decreases, until they become too relaxed.
Why is my chainsaw squealing?
Make sure you remove the clutch as running the saw with just the drum removed will take out the brake band. It is most likely the needle bearing if it squeals at idle but if it does it when revving then the clutch will be meshed to the clutch so must be the crank bearings!