Chainsaws

Your guide bar selection should be matched to the average diameter of the timber you need to cut and the engine's power capacity. Ideally, the bar should be 2 inches longer than the width of the log you are cutting to clear it in a single pass. For example, a 16-inch or 18-inch bar is the standard sweet spot for residential property maintenance and firewood cutting, while massive 20-inch to 24"+ bars require high-displacement commercial gas engines to handle the extra drag and weight safely.

Kickback occurs when the upper quadrant of the guide bar tip (the kickback danger zone) accidentally strikes a hard object like a hidden rock, metal spike, or adjacent limb. This causes the guide bar to violently wrench upward and backward toward the operator. The integrated chain brake handguard acts as an emergency stop shield; as the saw pitches up, the operator's left wrist naturally slams forward against the guard, triggering an internal steel band brake that stops the spinning chain instantly to prevent catastrophic contact injuries.

No, you should never use automotive motor oil or spent waste oil in your chainsaw. Standard motor oil is engineered to be thin fluid to reduce internal engine friction; if poured onto a chainsaw bar, the high-velocity spinning chain will instantly fling it off the tip into the grass, leaving your bar and chain dry. Specialized Guide Bar and Chain Lubricants contain high-density tackifier additives that make the oil sticky, allowing it to adhere tightly to the steel chain links to reduce friction and heat build-up at high RPMs.

The differences lie entirely in tool lifecycle longevity, heat generation, and power delivery:

• Brushed Motors: Rely on physical carbon brushes dragging against a spinning commutator to transfer electricity, building up heavy friction, heat, and internal wear over time.
• Brushless Motors: Utilize computerized electronic circuit boards and permanent magnets to rotate the motor spindle. This eliminates physical contact wear entirely, yielding up to 50% longer runtimes per charge, cooler operating temperatures, and gas-matching torque output.

To check your chain tension safely (with the engine off and battery removed), perform the standard "snap test." Wear gloves and pull the chain downward away from the bottom of the guide bar. A perfectly tensioned chain should pull down slightly, but the drive links should never fully disengage or sag completely out of the bar groove. When you let go, the chain should instantly snap back flush against the rail. A loose chain will derail from the bar at high speeds, risking severe injury.

You must exclusively utilize high-grade unleaded fuel with an octane rating of 89 or higher containing no more than 10% ethanol (E10). Standard gas pump fuels mixed with high concentrations of ethanol naturally attract moisture out of the air; this causes phase separation, which destroys internal seals and leaves a sticky, lacquer-like varnish that clogs small carburetor jets. For the absolute best protection during long-term storage, utilize premium, ethanol-free pre-mixed canister fuels.

Virtually all modern gas and cordless chainsaws utilize a gravity-fed or vacuum-pulsed automatic oiling circuit that pumps fluid directly out of the reservoir onto the bar tracking rails. When a saw experiences ambient temperature changes in a garage or truck locker, the air inside the plastic reservoir expands and contracts, forcing small amounts of oil out through the delivery ports naturally. To prevent messy storage puddles, it is highly recommended to crack open the oil cap briefly to relieve pressure before storing the tool, or drain the oil tank entirely before long winter layups.

Your sharpening frequency depends entirely on the condition of the wood material you are cutting. A factory-sharp chain cuts cleanly, spitting out large, uniform wood flakes and curly wood shavings. The moment your saw begins producing fine, powdery wood dust or requires you to apply heavy downward physical pressure to force the bar into the log, the cutters are dull and need to be sharpened with a round file. Striking dirt, mud, or hidden gravel will instantly dull a chain in a single fraction of a second.

Operating a high-speed saw safely requires full compliance with standard trade safety gear parameters:

• Chainsaw Chaps or Pants: Engineered with layers of high-tensile ballistic nylon or Kevlar fibers built to instantly clog the drive sprocket and halt the chain if a slip occurs.
• Head & Face Safety: A structural logging helmet equipped with a full wire mesh face shield to repel flying wood chips.
• Hearing & Eye Defense: Premium ear muffs rated for at least 25 dB noise suppression paired with impact-rated ANSI safety glasses.
• Footwear: Rugged steel-toed leather boots providing dependable ankle support and deep non-slip traction treads.

Ordering your equipment through an authorized industrial supplier like Ohio Power Tool guarantees you receive 100% authentic, factory-direct inventory backed completely by full manufacturer warranty programs. We maintain competitive commercial pricing tiers, stock an extensive depth of replacement chains, guide bars, protective chaps, and high-capacity battery kits, and feature a fully certified in-house repair center to ensure your field clearing crews maximize their daily seasonal uptime.