What Is a Homelite SXLAO Chainsaw (Specs & Bar Fit)
The Homelite SXLAO is associated with the vintage Super XL Automatic chainsaw family. It is commonly listed at about 3.5 cubic inches (57 cc), with bars in the 16–24-inch range. Those figures do not confirm the parts on a particular saw. To choose a bar or chain safely, check the saw’s actual mount, oil feed, sprocket, bar groove, and chain.
I tell owners, “Measure the parts, not the model name.” That matters with an older saw: bars, sprockets, and other parts may have been changed over the years. The SXLAO name is a useful clue, but it is not enough to order a replacement chain or bar with confidence.
What is a Homelite SXLAO chainsaw?
The SXLAO is associated with Homelite’s vintage Super XL Automatic family. It is a gasoline-powered two-stroke chainsaw, but the model code alone cannot confirm every detail of a saw that has been repaired or altered. Check the model plate and serial number, then compare the saw with the correct manual or parts record.
The Super XL Automatic is an older design, so two saws carrying similar model markings may not have identical parts today. One may still have its original bar and sprocket; another may have replacements. Even if both are in working order, their chain requirements could differ.
Look for the model and serial information on the saw’s identification plate. Record it before searching for a manual or contacting a parts supplier. If the plate is missing or unreadable, take clear photos of the bar mount, sprocket, and existing bar stamp. Those details can help a qualified parts source identify what is actually fitted.
Do not assume that “SXLAO” is a complete parts specification. It helps identify the saw family, but the fitted components decide whether a replacement will work.
What are the common SXLAO specifications?
Published family-level listings commonly give the engine size as about 3.5 cubic inches, or 57 cc, and associate the saw with bars from 16 to 24 inches. Treat these as reference points, not confirmed specifications for every individual saw. For fuel mix, speed, or adjustments, use the matching manual or saw label.
| Item | Common family-level information | What to verify on your saw |
|---|---|---|
| Model family | Homelite Super XL Automatic | Model plate and serial number |
| Engine size | About 3.5 cu in (57 cc) | Manual or parts record for your exact saw |
| Bar length | 16–24 inches commonly associated | Bar stamp, mount, and safe suitability |
| Chain pitch | Not safely inferred from SXLAO | Bar marking and sprocket |
| Chain gauge | Not safely inferred from SXLAO | Bar groove marking or measurement |
| Drive-link count | Not safely inferred from SXLAO | Count the chain’s drive links |
| Fuel mix | No single ratio confirmed here | Applicable manual or label |
| RPM and tuning | No single value confirmed here | Correct service specification |
“Pitch” is the size relationship between the chain’s links and the sprocket. “Gauge” is the thickness of the chain’s drive links, which must fit the groove in the bar. “Drive-link count” is the number of links that run inside that groove. All three must match the saw’s parts.
Do not transfer a fuel ratio, carburetor setting, or chain adjustment value from a different Homelite model—or from a modern saw—without checking the correct instructions. A guessed fuel mix can damage a two-stroke engine, and incorrect carburetor tuning can cause severe engine damage.
How do you confirm the right bar and chain fit?
Bar and chain fit is a match between several parts, not simply a matter of choosing the same length. Check the bar mount, oil-feed alignment, sprocket pitch, bar-groove gauge, and drive-link count as a set. If any one is wrong, the chain may not seat, lubricate, or run properly.
Start with the current bar. Clean it enough to read any stamped information, which may include length, pitch, and gauge. A stamp is useful, but it does not prove that the bar is correct for the saw or that it matches a sprocket that may have been changed.
Then check the sprocket pitch. The chain pitch must match the sprocket, while the chain’s drive-link thickness must match the bar groove. Count the drive links on the old chain rather than guessing from bar length. If the old chain is damaged or its identity is unclear, have a chainsaw parts specialist check the sprocket and bar before ordering.
The replacement bar also needs the correct mount and oil-feed position. The mount is the area where the bar attaches to the saw; its shape and slot must suit the saw. The oil-feed holes must line up so bar oil can reach the chain. A bar with the right length but the wrong mount or oiling position is not a safe substitute.
| Check | How to verify | If it does not match |
|---|---|---|
| Bar mount | Compare bar slot and mounting area with the saw | Do not force it onto the studs |
| Oil-feed alignment | Check the bar’s oil holes against the saw’s oil outlet | Do not run with blocked or misaligned oiling |
| Sprocket pitch | Read part markings or have it identified | Do not pair with a chain of another pitch |
| Bar-groove gauge | Read the bar stamp or measure with a suitable gauge tool | Do not use chain drive links that are too thick or thin |
| Drive-link count | Count every link that rides in the bar groove | Order the verified count, not a model-based guess |
| Chain direction | Check cutter direction against the saw’s instructions | Correct it before starting |
If the chain will not sit in the groove, the bar does not seat correctly, or the chain becomes slack soon after adjustment, stop. Do not try to fix a mismatch by forcing parts together or tightening the chain beyond the manufacturer’s instructions.
What checks should you make before running it?
Before starting an SXLAO, confirm that its bar, chain, and sprocket are compatible and that the chain receives oil. Also inspect the saw’s controls and fasteners. If you cannot confirm the fuel mix or starting procedure from the correct manual or label, do not guess; find the applicable instructions first.
With the engine off and cool, inspect the chain, bar, sprocket, fuel lines, and anti-vibration parts. Look for cracks, bends, damage, or heavy wear. Clean the bar groove and oil holes, and make sure the chain tension follows the saw’s instructions. A chain should not bind, derail, or hang loose from the bar.
Check whether the saw has a chain brake and confirm that it works as designed. Check the throttle lockout and other fitted safety controls; do not bypass or disable them. If a control is damaged or its function is unclear, ask a qualified service person to inspect the saw before use.
For operation, wear chainsaw-rated head, eye, and hearing protection, along with chainsaw chaps, gloves, and protective boots. Start on stable ground with the chain clear of people and objects, and follow the prescribed cold- or warm-start method. Keep both hands on the saw, maintain secure footing, and avoid cutting with the guide-bar nose’s upper quadrant, where kickback can occur.
Stop immediately if the chain loosens, binds, or fails to oil. Never cut above shoulder height or force a dull or incorrect chain through wood. Tree felling needs a separate assessment of lean, defects, wind, and nearby targets; use applicable ANSI Z133 requirements and competent guidance rather than relying on a universal notch or hinge measurement.
Bar-fit examples: what should an owner do?
These examples show how to reason through common parts questions; they are not claims about a specific SXLAO saw or confirmed repair history. The key step in each case is to verify the parts on the saw. If a marking is missing or parts disagree, pause and get help identifying the setup.
| Situation | Sensible next step | Avoid |
|---|---|---|
| You have a 20-inch bar but cannot read its stamp | Identify the mount and oil-feed position, then verify groove gauge, sprocket pitch, and link count | Ordering chain based on 20 inches alone |
| The old chain fits the bar but the sprocket is worn or unknown | Have the sprocket pitch checked and replace parts only as a compatible set | Assuming the chain proves the sprocket is correct |
| The chain fits but will not receive oil | Stop; inspect oil passages and confirm the bar’s oil holes align | Continuing to cut and hoping oil flow improves |
| You are choosing between a 16- and 24-inch bar | Confirm that the bar fits and that the saw and operator can handle the planned cut | Treating the longest commonly listed bar as automatically suitable |
| The saw has no readable model plate | Photograph the mount, sprocket, bar stamp, and existing chain; seek qualified identification | Buying parts from a model name guessed from appearance |
A longer bar does not make an uncertain setup safe. The right choice depends on verified compatibility and the work being done, as well as the saw’s condition and the operator’s skill. If the bar or chain has no readable markings, a chainsaw service shop can often inspect the parts directly.
How should you maintain and store an SXLAO?
Routine care helps reveal wear before it becomes a fit or safety problem. Follow the correct manual for service steps and settings. Clean the filter and bar area, inspect the chain and sprocket, and use the chain maker’s sharpening and depth-gauge specifications rather than guessing at angles or raker height.
After use, stop the engine and let hot parts cool. Remove debris, inspect for damage, and cover the chain before storing the saw. Keep it dry and protected from corrosion. Follow the manual’s fuel-system directions for storage, and keep fuel in an approved container. Use fresh fuel mixed to the ratio specified for the saw.
A dull chain should be sharpened to its maker’s instructions, not pushed harder through wood. Carburetor tuning also needs the correct service specification and a tachometer; do not guess RPM or tune by ear. Incorrect lean tuning can damage the engine. If you cannot find the right manual, consult a qualified service provider before making adjustments.
Frequently asked questions
These brief answers cover the common identification and fit questions. They cannot replace the saw’s manual or an inspection of its installed parts. When the markings, bar, and sprocket do not agree, stop before buying a chain or running the saw.
What does Homelite SXLAO mean?
SXLAO is associated with the Homelite Super XL Automatic family. Confirm the model plate and serial number to identify the individual saw.
How many cc is a Homelite SXLAO?
The family is commonly listed at about 3.5 cubic inches, or 57 cc. Check the manual or parts record for your saw before treating that as its exact specification.
What bar length fits an SXLAO?
Bars from 16 to 24 inches are commonly associated with the family, but length alone does not establish fit. Confirm the mount, oil feed, and chain-and-sprocket match.
What chain pitch does an SXLAO use?
The pitch cannot be safely inferred from the SXLAO designation alone. Check the bar marking and sprocket.
What chain gauge does an SXLAO need?
The gauge must match the bar groove. Read the bar stamp or have the groove checked with a suitable measuring tool.
How many drive links does the chain need?
Count the drive links on the chain that matches the verified bar and sprocket. Do not estimate the count from bar length or model name.
Can I use a modern 50:1 fuel mix?
Do not assume that ratio is correct. Use the fuel ratio specified in the manual or label for the saw’s configuration.
Can I fit a longer bar to make bigger cuts?
Only if the bar is compatible and suitable for the saw and the planned work. A longer bar is not automatically safe just because it falls within a commonly listed range.
What if the chain fits but does not get oil?
Stop the saw. Check the oil passages and bar-hole alignment, and have the setup inspected if oil flow remains uncertain.
Can I order a chain using only “Homelite SXLAO”?
No. Verify the pitch, gauge, drive-link count, and compatibility with the installed sprocket and bar before ordering.
(This article was written by one of our staff writers, Evan Bradley. Visit our Meet the Team page.)
