Chainsaw questions answered
Updated June 2026Independently researchedNo paid placement.
Choosing the right chainsaw comes down to matching the power source and bar length to your typical cutting tasks. For occasional limbing and firewood, a lightweight electric model often suffices, while frequent felling or large trees calls for a gas saw with a longer bar. Always prioritize safety features like chain brake and anti-vibration systems.
Gas vs. electric: which is right for you?
Gas chainsaws offer high power and runtimes measured in hours, making them ideal for heavy-duty felling, large-diameter logs, and all-day use away from outlets. They are louder, heavier, and require mixing oil with fuel, plus regular engine maintenance. Electric models (corded or battery) are quieter, lighter, and start instantly with a push or pull trigger. Corded electrics provide unlimited runtime near an outlet but are tethered; battery saws offer mobility but limited runtime per charge, typically 20–40 minutes of cutting. If your work is sporadic and within 50 feet of power, a corded electric saves hassle. If you need portability for occasional yard cleanup, a mid-range battery saw works well. For frequent, demanding tasks, gas remains the workhorse choice.
What bar length do I actually need?
Bar length determines the maximum diameter of wood you can cut in a single pass. A general rule: add two inches to the bar length for the largest log you can comfortably cut (e.g., a 16-inch bar handles logs up to about 18 inches thick). For homeowners clearing limbs and small trees, a bar between 14 and 18 inches is versatile. For felling medium-sized trees or cutting firewood, 18 to 20 inches is common. Bars over 20 inches are for large timber and experienced users, they add weight and kickback risk. Shorter bars provide better control, especially for pruning and overhead work. Beginners often overestimate the length needed; a 16-inch bar on a light saw handles 90% of residential tasks.
Chainsaw safety must-knows for beginners
A chainsaw is one of the most dangerous handheld tools, safety gear is not optional. Always wear a hard hat with face shield or safety glasses, hearing protection, cut-resistant chaps or pants, steel-toed boots, and non-slip gloves. The chain brake is a critical safety feature that stops the chain instantly if kickback occurs; test it before each use and keep it clean. Never cut above shoulder height, and always maintain a firm two-handed grip with thumbs wrapped around the handles. Kickback happens when the top of the bar tip contacts wood, avoid cutting with the nose of the bar. Keep the chain sharp and properly tensioned; a dull chain increases kickback risk. Finally, know your saw’s manual and never operate when tired or distracted.
How to maintain your chainsaw for years of reliable use
Regular maintenance extends chainsaw life significantly. After each use, clean the bar groove, oil holes, and air filter with a brush. Keep the chain sharp, dull chains require more pressure and produce fine sawdust instead of chips. Check chain tension every time you refuel; a loose chain can derail, while an overtight chain wears the bar and sprocket. For gas saws, use fresh fuel (no older than 30 days) and high-quality bar oil. Stale fuel gums carburetors, add stabilizer if storing for months. For electric saws, keep battery contacts clean and store batteries at moderate temperatures. Inspect the spark arrestor screen (gas) yearly. Replace the bar when its rails are worn, usually every two to three chains. Proper storage: empty fuel, clean the saw, and hang it with the bar horizontal to prevent oil leaks.
Cordless battery chainsaws: convenience vs. capability
Battery chainsaws have improved enormously, with modern lithium-ion packs offering power comparable to small gas saws for casual use. Their biggest advantage is instant starting with zero pull-start hassle and very low noise. Most reliable brands offer 12 to 16-inch bars, running 20 to 40 minutes per charge, enough to take down small trees and process several logs. The trade-off: runtime is limited, especially in cold weather or heavy limbing. Spare batteries are expensive, and high-consumption use drains packs quickly. For homeowners who cut firewood a few times a year or clean up after storms, a battery saw from a trusted tool brand is a fantastic, low-maintenance option. But for all-day or large-diameter work, you’ll still want a gas saw.
Understanding kickback and how to avoid it
Kickback is a sudden upward and backward motion of the saw when the chain at the top of the bar nose contacts an object, most often wood or a log. It happens in a split second and can cause serious injury if you’re not prepared. To minimize risk, always keep both hands on the handles with thumbs wrapped, and never cut above shoulder height. Use a low-kickback chain, which has specially shaped depth gauges and cutting teeth that reduce the force of a kickback event. Make sure the chain brake works properly. Before cutting, plan your cuts so you aren’t forcing the bar tip into the wood. If the saw begins to kick, don’t let go, the chain brake should stop the chain, but keep a firm grip. Training and practice are your best defenses.
Frequently asked questions
Do I need a chainsaw with a quick-adjust chain tensioner?
A tool-free chain tensioner makes adjustments fast and easy, especially for beginners who often need to retension after a new chain breaks in. It’s a convenience feature, not a necessity, but it saves time and frustration on the job.
Can I use a chainsaw to cut down a large tree in my yard?
Yes, but only if you have proper training and safety gear. Felling a tree larger than the bar length requires experience in notching and directional cutting. For trees over 12 inches in diameter or leaning toward structures, hire a professional arborist.
Should I buy a chainsaw with a case included?
A carrying case protects the bar and chain during storage and transport, and keeps oil from leaking. It’s a valuable addition, especially if you store the saw in a garage or vehicle. Many mid-range and premium models include one.
How often should I sharpen the chain?
Sharpen when the saw produces fine sawdust instead of chips, or when you have to push down hard to cut. A typical homeowner might sharpen every 3–5 tanks of fuel (or after several battery charges). If you hit dirt or gravel, sharpen immediately.
Is a chainsaw good for cutting firewood?
Absolutely. A chainsaw is the fastest tool for bucking logs into firewood lengths. Use a bar long enough to cut through the thickest logs you have, usually 16 to 20 inches. A bucking stand or log cradle makes the job safer and easier.
What does ‘CC’ mean on a gas chainsaw?
CC stands for cubic centimeters and measures engine displacement. Higher CC generally means more power but also more weight. For occasional use, 35–45 CC is ample; for frequent big cuts, 50–60 CC is common. Don’t overshoot, power needs to be manageable for you to handle safely.