The inertia chain brake is a very important safety feature of the modern chain saw. Since kickback occurs suddenly and with great force most people cannot react fast enough to activate the chain brake manually. The chainsaw brake handle, brake spring, and band are designed to be of the perfect weight and tension to activate at kickback by the rapid movement of the saw.
Chain Brake: Located on the top handle of the chainsaw, the chain brake is used to stop the chainsaw chain from rotating around the bar. Always start your chainsaw with the chain brake engaged so the chain does not move. The STIHL Quickstop® chain brake is designed to stop the rotation of the chain if activated by the operator’s hand or by inertia if the saw kicks back with sufficient force.
Depth gauges filed too low make the chain grab at the wood and may negate the benefits offered by safety chain. Full safety chains have extra bumper links between the cutting links, maintaining nearly full depth gauge height along the full extent of the chain and reducing the risk of kickback to very low levels. Modern “Professional” chains offer far higher cutting performance than full safety chain, and offset their increased risk with an assumption of a much higher degree of operator competence.
how does chainsaw brake work Related Question:
Do you start a chainsaw with the brake on?
The chain brake should be activated when you start the chainsaw. Many chainsaw models can be started in what is known as ‘half-throttle’ position. In this position, the chain can rotate – if the chain brake is not activated.
What happens if you run a chainsaw with the brake on?
Running a chainsaw with the brake on can be dangerous for you and anyone in your vicinity. The chainsaw will not cut, but it still creates sparks that can cause fires or startle nearby pets. It also doesn’t allow the saw to cool down enough which increases the likelihood of overheating and breaking down.
What is the most common chainsaw injury?
The most common hazards associated with chainsaws are injuries caused by kickback, pushback, and pull-in. Kickback is the most common and poses the greatest hazard. Kickback occurs when the rotating chain is stopped suddenly by contact with a more solid area throwing the saw rapidly backward toward the operator.
Why is my chainsaw hard to pull and kicks back?
If your chainsaw is hard to pull, here are some common causes: The pully system is snagged or stuck. The starter assembly is stuck or sticky. The housing may be damaged.
When should a chain brake be used?
The chain brake has two purposes. First, it can be used to secure the chain when changing position, moving between cuts or starting a cold saw, which requires a partly open throttle. This would otherwise lead to uncontrolled chain movement, a major hazard in older saws.
Do you start a Stihl chainsaw with the brake on?
On a gas-powered Stihl chainsaw, the chain brake is located just in front of the handlebar. All you have to do to activate it is push it forward. This will keep the chain locked as a safety precaution while you are starting the chainsaw, and until you are ready to use the tool.
Should you run a chainsaw at full throttle?
Engine Protection Generally, two-stroke chainsaw engines are built to conveniently run at full throttle without an engine breakdown. Therefore, running at any throttle speed below the full throttle is not advised.
Why do chainsaw chain dull so quickly?
Is the wood that you’re cutting with the chainsaw particularly dirty? Many chainsaw enthusiasts have noted that their blades dull faster when they’re cutting muddy wood. If the logs that you’re cutting up are muddy, then perhaps that is the sole reason why your blade is dulling too fast.
Can you drill holes in chainsaw bar?
Re: Drilling a Chainsaw Bar Drilling that bar may not be as difficult as you think. It will be best if you use a drill press, start with a pilot hole, and then drill to the size you need. Make sure you have a sharp bit, run at the lowest speed you can, and use cutting fluid.
How long should chainsaw blade last?
The lifetime of a chainsaw chain has no fixed limit and depends on usage and maintenance. The chain should last many years; 5-6 years should be no problem. However, if the chainsaw chain is used properly and taken care of, it can last way longer.
How do most chainsaw accidents happen?
CHAINSAW ACCIDENTS Kickback is the most serious risk of chainsaw operation. It occurs when the tip of the guide bar and chain contact an object, forcing the guide bar violently backward and upward. Kickbacks can occur in less than one-tenth of a second, causing severe head, face, neck, shoulder, and hand injuries.
What causes a chainsaw to vapor lock?
Vapor lock occurs when the fuel (usually gasoline) within the fuel delivery system overheats and vaporizes too rapidly. The resulting excess gas bubbles accumulate to the point of actually blocking normal fuel delivery.
Why does my chainsaw have too much compression?
Many problems with compression are related to fuel. Old or bad fuel can cause lots of headaches with yard equipment. Try draining any of the gasoline mixture left in the gas tank and add fresh fuel. If this does not solve the problem, it may be related to excessive fuel caused by problems in the gas lines and filters.
How long does it take to Unflood a chainsaw?
The first option is the easiest since it doesn’t require any effort on your part, it just takes time. Many people wonder if a flooded chainsaw will fix itself? The answer is yes, but not always. By letting the chainsaw sit for about 20 minutes it will allow some of the fuel inside the engine to evaporate.
When did chainsaws get brakes?
When Did Chainsaws Get Brakes? In 1972, a manual chain brake bar was included with Stihl chainsaws which allowed the user to stop the chain from spinning when the bar was pressed. Also, in 1973 the Husqvarna company invented the automatic chain break with stops the chain immediately after kickback.