Best Black & Decker Alligator Chainsaw (2026)

Keeping your garden clear of overgrown brush is a constant battle, and the black & decker alligator chainsaw has long been a go-to tool for managing those tough, woody stems near raised beds. When the teeth finally dull, finding the right replacement chain is essential to maintaining that signature, jaw-like cutting efficiency.

I evaluated the listed specifications and buyer-fit trade-offs for several replacement options to help you keep your maintenance workflow moving. Whether you are using the 6 Inch Chainsaw Chain for standard loppers or specialized lengths for pole saws, matching the chain to your specific model is the most important step in your repair process.

For those looking to restore their equipment, the 6 Inch Chainsaw Chain remains my top pick for consistent performance. If you are working on a tighter budget, the OEM 90618541 Replacement offers a reliable alternative that aligns well with the needs of a practical home gardener.

Quick Picks for Best Black & Decker Alligator Chainsaw

	Best Overall	6 Inch Chainsaw Chain	Compatibility: High	Chain Length: 6 Inch	Intended Use: Alligator Lopper	View Latest Price	Read Review
	Best Budget	OEM 90618541 Replacement	Compatibility: High	Chain Length: Not listed	Intended Use: DCCS Series	View Latest Price	Read Review
	Best Premium	2PC 12 inch Chainsaw Chain	Compatibility: Moderate	Chain Length: 12 Inch	Intended Use: Larger Limbs	View Latest Price	Read Review
	Best Compact	RC800 8 inch Polesaw Chain	Compatibility: High	Chain Length: 8 Inch	Intended Use: Overhead Pruning	View Latest Price	Read Review
	Best Brushless	3Pack A42 6 Inch Chainsaw Chain	Compatibility: High	Chain Length: 6 Inch	Intended Use: Heavy Use	View Latest Price	Read Review

Selecting the right replacement chain for your Black & Decker alligator chainsaw ensures your pruning workflow remains efficient while protecting the health of your garden beds and surrounding irrigation lines.

How We Compared Best Black & Decker Alligator Chainsaw

We compared the product-listing details available for each option, including the stated use, design, and notable features. Availability and specifications can change, so confirm the current listing details before buying.

Product Comparison: Best Black & Decker Alligator Chainsaw (2026)

1. 6 Inch Chainsaw Chain

   
   
   
   Reliable Performance
   View Latest Price
   • CompatibilityLLP120, LP1000
   • Length6 Inch
   • MaterialSteel
   • PackageSingle
   • Best forAlligator Lopper
   • StandoutOEM fitment

   This 6 Inch Chainsaw Chain stands out because it is specifically engineered for the classic alligator lopper series. It provides the exact fitment required to keep your pruning tasks efficient and safe.

   It is best for gardeners who rely on their loppers for daily cleanup around raised beds and dense shrubs. If your current chain is skipping or dulling, this is the standard replacement.

   In my evaluation of the specs, this chain integrates seamlessly with the drive sprocket of the listed models. It is designed to handle the repetitive motion of the alligator jaw mechanism.

   The main trade-off here is that it is a single-chain purchase, so you will need to keep an eye on wear and tear if you have heavy clearing work ahead.

2. OEM 90618541 Replacement

   
   
   
   Budget Friendly
   View Latest Price
   • CompatibilityDCCS670, DCCS690
   • LengthNot listed
   • MaterialHardened Steel
   • PackageSingle
   • Best forDCCS Series
   • StandoutOEM quality

   The OEM 90618541 Replacement is a standout for those who want original equipment manufacturer quality without unnecessary complexity. It serves as a direct replacement for specific DCCS series units.

   This is ideal for the budget-conscious gardener who needs to replace a worn chain without overspending on aftermarket brands that might not fit perfectly.

   I noted that this part is specifically listed for the DCCS670 and DCCS690 models, ensuring that the pitch and gauge match your existing bar.

   The trade-off is the lack of explicit length data in the provided specs, making it vital to verify your model number against the compatibility list before purchasing.

3. 2PC 12 inch Chainsaw Chain

   
   
   
   Premium Reach
   View Latest Price
   • CompatibilityLCS1240, CMCCS620
   • Length12 Inch
   • MaterialSteel
   • Package2-Pack
   • Best forLarger limbs
   • StandoutDual pack

   The 2PC 12 inch Chainsaw Chain is my premium pick because it offers the reach needed for larger garden projects. Getting a two-pack is a smart move for long-term maintenance.

   This is perfect for gardeners with larger trees or thicker woody debris that requires a longer bar length than standard loppers provide.

   According to the specifications, this chain is designed to handle the increased torque of the LCS1240 series, providing a durable cutting edge for tougher jobs.

   The trade-off is that these are longer and heavier, which can lead to faster fatigue during extended use compared to the smaller alligator-style chains.

4. RC800 8 inch Polesaw Chain

   
   
   
   Compact Reach
   View Latest Price
   • CompatibilityLPP120, NPP2018
   • Length8 Inch
   • MaterialSteel
   • PackageSingle
   • Best forOverhead pruning
   • StandoutPole saw fit

   The RC800 8 inch Polesaw Chain is the best choice for reaching those high, stubborn branches. It brings compact precision to your pole saw, making overhead work much easier.

   This is intended for those who use pole saws to maintain tree canopies, preventing shade from encroaching on your sun-loving vegetable patches.

   I evaluated the compatibility list, which confirms it fits the LPP120 and related models, ensuring a secure fit for your equipment.

   The trade-off is that 8-inch chains require precise tensioning; if left too loose, they can easily jump the bar during vertical cuts.

5. 3Pack A42 6 Inch Chainsaw Chain

   
   
   
   Value Multi-Pack
   View Latest Price
   • CompatibilityLLP120, WG307
   • Length6 Inch
   • MaterialSteel
   • Package3-Pack
   • Best forHeavy users
   • StandoutBulk value

   The 3Pack A42 6 Inch Chainsaw Chain is the ultimate value play for heavy-duty gardeners. With three chains in one box, you are prepared for an entire season of clearing.

   This is best for those who manage large properties where frequent pruning is necessary to maintain irrigation paths and garden borders.

   The specs indicate wide compatibility with both B&D and Worx jawsaws, making it a versatile addition to your tool shed regardless of brand loyalty.

   The trade-off is the initial investment cost, which is higher than a single chain, though the per-unit price is significantly lower for the frequent user.

What to Look for in Best Black & Decker Alligator Chainsaw

Chain Pitch and Gauge

When upgrading your Black & Decker alligator chainsaw, the most critical factor is matching the pitch and gauge to your specific guide bar. The pitch is the distance between drive links, while the gauge measures the thickness of the drive link that fits into the bar groove. Using an incompatible chain can lead to excessive vibration or the chain flying off the bar during operation, which poses a significant safety risk. Always verify your model number against the manufacturer specifications to ensure a perfect fit. Proper alignment prevents premature wear on the sprocket and guide bar, ensuring that your tool remains reliable for heavy-duty pruning tasks around your raised beds and landscape borders, ultimately saving you time and costly mechanical repairs.

Material and Durability

Look for chains constructed from high-grade industrial steel that has been heat-treated to resist heat and friction. Because alligator chainsaws often come into contact with dirt, grit, and occasional soil near ground-level pruning, the steel must be hardened to maintain its cutting edge sharpness for longer periods. A durable chain resists stretching under load, which is vital when you are working in tight spaces where stopping to adjust tension is inconvenient. Investing in premium materials means fewer sharpening cycles and a more consistent cut, which is essential for maintaining clean, healthy pruning wounds on your trees and shrubs, preventing disease and promoting vigorous growth throughout the growing season.

Drive Link Count

The drive link count is the specific number of links that travel inside the guide bar groove. Even if the bar length appears identical, different models may require a different number of drive links. Always count the links on your old chain or consult the OEM documentation before purchasing a replacement. A chain with the wrong link count will either be too loose to tension correctly or too short to mount on the saw entirely. Ensuring the correct count is vital for maintaining the optimal tension required for safe operation, especially when you are maneuvering the saw around delicate irrigation drip lines or reaching into dense foliage within your garden layout.

Anti-Kickback Design

Safety should be your primary concern when selecting a replacement chain, particularly for the alligator-style saw which is often used for awkward, low-angle pruning. Choose a chain featuring low-kickback design elements, such as ramped depth gauges or specialized cutter shapes that reduce the force of a kickback event. This is especially important when pruning near ground level where the saw might strike hidden rocks or soil, potentially causing the tool to jump. A chain with built-in safety features provides better control and stability, giving you the confidence to manage branches near your irrigation infrastructure or raised-bed structures without fear of accidental damage or operator injury during intense gardening sessions.

Ease of Installation

Consider how easily the chain can be installed without requiring specialized mechanical knowledge or complex tools. Many modern B&D alligator saws feature tool-free tensioning systems, and the replacement chain should be designed to seat properly within these mechanisms. A well-designed chain will have clearly marked drive links that align intuitively with the sprocket. If you are frequently pruning in small spaces, you want a chain that can be swapped out quickly in the field. Look for products that include clear instructions or compatibility charts, as this minimizes downtime and allows you to focus more on your garden maintenance workflow rather than struggling with equipment assembly or mechanical failures.

Compatibility with Bar Length

Always verify that the chain is specifically rated for your bar length, whether it is a 6-inch or 8-inch setup. Using a chain that is not designed for your specific bar length will result in an improper fit, which can damage the motor or the guide bar itself. Since alligator saws are often used for precision work near irrigation pipes and soil-heavy areas, a mismatch can lead to uneven cutting, causing the saw to bind or stall. By confirming the bar length compatibility, you ensure that the chain teeth are positioned correctly to clear debris effectively, preventing the buildup of wood chips that could otherwise clog your garden drainage or interfere with your irrigation emitters.

Lubrication Retention

A high-quality chain should have features that help it retain oil, such as specialized oil channels or grooves on the drive links. Proper lubrication is the lifeblood of any chainsaw, as it reduces friction between the chain, the bar, and the sprocket. Because alligator saws operate in environments where they may pick up dust from soil contact, the chain must be able to distribute oil efficiently to flush out debris. A chain that holds lubrication well will run cooler and last significantly longer, ensuring that your pruning work remains smooth and efficient. This is particularly important for gardeners who maintain extensive layouts where the saw is in use for long periods, requiring consistent performance.

Frequently Asked Questions

How often should I sharpen my alligator chainsaw chain?

You should sharpen your chain as soon as you notice the saw pulling to one side, requiring extra pressure to cut, or producing fine sawdust instead of coarse chips. In a busy garden environment, contact with soil or grit near raised beds will dull the teeth much faster than clean wood cutting. Ideally, perform a quick touch-up with a file every few hours of heavy use. Keeping the cutters sharp is essential for reducing strain on the motor and ensuring clean cuts that heal quickly, which prevents fungal infections in your prized garden trees and shrubs.

Can I use a generic chain instead of an OEM replacement?

While generic chains may fit, OEM replacements are specifically calibrated for the metallurgy and drive link profile of Black & Decker saws. Using an OEM chain ensures that the heat-treatment and cutter geometry match the manufacturer's safety standards, which is crucial when operating the alligator-style jaw mechanism. Generic chains might stretch faster or fail to seat correctly in the sprocket, potentially leading to mechanical damage. For long-term reliability and safety, especially when working near delicate garden irrigation systems, sticking to verified OEM parts provides the best protection for your equipment investment.

What causes the chain to come off the bar frequently?

A chain that frequently slips off is usually a sign of incorrect tension or a worn-out guide bar groove. If the chain is too loose, it lacks the stability to stay in the track during the aggressive cutting action of the alligator jaws. Conversely, if the guide bar is worn down, the drive links will not seat deep enough to stay secure. Always check your tension before starting any pruning task, and inspect the bar for burrs or excessive wear. If the problem persists, replace both the chain and the bar to restore proper alignment and safety.

Does soil contact damage the chainsaw chain?

Yes, soil contact is one of the fastest ways to ruin a sharp chain. Soil contains abrasive particles like sand and silica that act like sandpaper on the hardened steel cutters, dulling them almost instantly. When pruning branches near the ground or low-lying shrubs, try to maintain a buffer zone to avoid hitting the earth. If you accidentally strike the ground, stop immediately to inspect the chain for damage or dulling. Cleaning the chain thoroughly after any ground-level pruning is essential to prevent grit from entering the bar groove and causing accelerated wear.

How do I know if my chain is too tight?

A chain is too tight if it does not have a small amount of 'snap' when pulled away from the center of the guide bar. You should be able to pull the chain slightly away from the bar, and it should snap back into place under its own tension. If it is too tight, it will create excessive friction, overheat the bar, and put unnecessary strain on the motor. This heat can warp the guide bar over time, leading to poor cutting performance. Always adjust the tension when the chain is cool, as metal expands when it gets hot during operation.

Is it better to replace the chain or sharpen it?

Sharpening is a cost-effective way to extend the life of your chain, but there is a limit. Once the cutters have been sharpened so many times that they are significantly smaller than their original profile, or if the teeth have been damaged by hitting rocks or metal staples, it is time to replace the chain. Continuing to use a chain that has reached the end of its sharpening life will result in poor cutting performance and increased vibration. Regularly replacing your chain ensures that your pruning tasks remain safe and efficient throughout the gardening season.

Why does my chain smoke during operation?

Smoking usually indicates a lack of lubrication or excessive friction, often caused by a dull chain or a clogged oil port. If the chain is not getting enough oil, the friction between the links and the bar will generate heat, causing the oil to vaporize and smoke. Check your oil reservoir levels and ensure the bar oil is flowing correctly to the chain. Additionally, a dull chain forces the motor to work harder, generating more heat. If you notice smoke, stop immediately, let the unit cool down, and inspect the bar and chain for debris or lack of lubrication.

Does the alligator jaw design require a specific chain type?

The alligator chainsaw uses a unique jaw-clamping mechanism that puts different stresses on the chain compared to a traditional chainsaw. The chain must be able to handle the lateral forces exerted as the jaws close around a branch. Therefore, it is important to use chains specifically designed for the alligator model, as they are engineered to maintain tension and structural integrity under these specific conditions. Using a standard chainsaw chain might lead to premature stretching or failure, which could be dangerous given the close-quarters nature of the alligator saw's operation near your body and garden structures.

How do I store my chainsaw chain to prevent rust?

To prevent rust, always clean the chain thoroughly after use to remove sap, moisture, and debris. Once clean, apply a light coat of high-quality bar and chain oil to the entire chain before storing it in a dry, climate-controlled environment. If you are storing the chain off the saw, keep it in a sealed plastic bag or a container to protect it from humidity. Rust can weaken the metal and cause the links to become stiff, which leads to poor performance and potential breakage during your next pruning session in the garden.

Can I prune branches over my irrigation lines safely?

Yes, but you must exercise extreme caution. Ensure the alligator jaws are fully closed around the branch before applying power, and keep the saw angled away from any nearby irrigation lines. Always clear the area of debris before starting so you have a stable footing. If a branch is directly touching an irrigation line, use hand pruners to clear the area first to avoid accidental contact with the chainsaw. The precision of the alligator saw is excellent for this, but maintaining a clear line of sight and a controlled cutting environment is paramount for protecting your irrigation infrastructure.