Stihl 077 Chainsaw (Rare Monster Saw Profile)
The STIHL 077 is a discontinued, roughly 111 cm³ professional saw, commonly listed at about 6.5 kW and 10.6 kg for the powerhead alone. Those figures do not confirm a used saw’s condition or safe setup. Before buying or cutting, verify its version, serial-number-era manual, attachments, controls, and service history.
If you are weighing a rare 077 against a newer saw, the headline power figures can make the choice look simple. They do not tell you whether a particular used machine is sound, whether its bar and chain match, or whether its weight suits the work you plan to do.
I treat the 077 as a specialized, older saw, not a default upgrade. The figures below are commonly published specifications, not results from an inspection of your saw. Check the identification plate and applicable STIHL manual; versions and equipment can differ.
What the STIHL 077 Is, and What the Numbers Mean
The 077 is a large-displacement, two-stroke chainsaw made for demanding cutting work. “Powerhead-only” means the engine unit without the bar, chain, fuel, or oil. That distinction matters: a saw listed at 10.6 kg will weigh more in working trim.
Commonly published specifications describe a single-cylinder, air-cooled engine with about 111 cm³ displacement and 6.5 kW of power. Displacement is the volume moved by the piston; it helps describe engine size, but does not tell you how a worn saw performs under load.
Using those commonly listed figures, the power-to-weight ratio is about 0.61 kW per kilogram for the bare powerhead. That is a calculation, not an independent performance test. It also excludes the cutting attachment and fluids, so it is not a fair measure of how tiring a complete saw will feel in the field.
The 077 is discontinued. Parts availability, repair cost, and condition can vary by region and by individual machine. Before paying a premium for rarity, ask what has been tested, what has been replaced, and whether a qualified shop can support that version.
| Commonly listed item | Figure or description | What to verify |
|---|---|---|
| Engine | 111 cm³, air-cooled two-stroke | Model and version on the saw |
| Power | About 6.5 kW | Applicable STIHL documentation; condition affects output |
| Powerhead weight | About 10.6 kg | Whether the seller’s figure includes attachments |
| Chain pitch | May be 3/8 in or .404 in | Bar stamp, chain markings, and sprocket |
| Fuel mix | Do not assume a ratio | Applicable manual and specified oil |
Buying takeaway: Confirm the saw’s identity and service condition before treating published specifications as proof of what it can do.
Equipment Setup and Safety Preparation
Safe setup means confirming the saw, cutting attachment, fuel, and protective equipment before starting. A chain must match the bar and drive sprocket in pitch and gauge, and it must have the correct number of drive links. There is no universal 077 chain specification.
Start with the serial number and the manual for the exact version. Check the bar stamp and chain markings. Pitch is the spacing used by the chain and sprocket; gauge is the thickness of the drive links that fit in the bar groove. Both must match, along with drive-link count and sprocket type. Do not select a bar length by engine size alone.
Before use, inspect the chain brake, throttle interlock, chain catcher, fasteners, bar, chain tension, and visible fuel or oil leaks. Confirm that the chain is fitted in the correct direction. If a control does not work, a part is damaged, or the attachment markings do not agree, stop and resolve the fault before starting.
Use the fuel ratio and oil type stated in the applicable manual. Many STIHL manuals specify a 50:1 mix with STIHL two-stroke oil, but that should not be assumed for every legacy 077 manual. Never use straight gasoline or an unverified mixture. Fill the chain-oil tank with the specified bar oil, following the manual for the saw and conditions.
Wear a helmet, eye and face protection, hearing protection, chainsaw leg protection, gloves, and suitable footwear. Check the work area for people, obstacles, unstable footing, and hazards overhead. For tree work, assess lean, defects, wind, targets, and escape paths. Follow applicable ANSI Z133 and OSHA requirements, as well as local rules.
Setup takeaway: If the manual, fuel mix, or attachment match is uncertain, do not guess. Have the saw checked by a qualified technician.
Field Cutting and Felling Operations
Field work with a 077 calls for a trained operator, a sound saw, and a job within the operator’s skill and the saw’s documented setup. A large engine does not remove the need for good footing, a clear work zone, and planned cuts. Felling requires a competent plan and suitable escape routes.
Start on stable ground using the applicable manual’s cold- or warm-start steps. Engage the chain brake for starting, then release it only when you are ready to cut. Keep both hands on the saw, maintain stable footing, and keep other people out of the cutting area.
The bar nose deserves special care. Upper-quadrant kickback happens when the upper part of the bar tip strikes wood or another object. The saw can rotate sharply back toward the operator. Keep the nose clear of the cut, avoid tip-dipping, and maintain a firm two-handed grip. A chain brake may reduce risk, but it cannot guarantee protection from injury.
For felling, plan the direction of fall, escape routes, and a clear area before cutting. A hinge is the uncut wood left between the face notch and back cut; it helps guide the tree. Its form and dimensions depend on the tree and the applicable training and guidance. Do not attempt a difficult or uncertain fell beyond your training, site conditions, or equipment capability.
The following are practical setup scenarios, not reports of specific field tests. They show why the job and condition matter more than displacement alone.
| Situation | Check before work | Decision point |
|---|---|---|
| Bucking a downed log | Stable log, secure footing, clear bar path, matched chain and bar | Proceed only if the log will not roll or bind unexpectedly |
| Considering a long bar | Manual approval, saw condition, attachment match, operator control | Do not choose length by displacement alone |
| Felling a standing tree | Defects, lean, wind, targets, escape routes, and crew exclusion zone | Defer if the plan or conditions exceed training |
| Used saw with unknown history | Controls, leaks, compression and service checks by a qualified shop | Do not rely on a brief idle test alone |
Field takeaway: Choose the cut and attachment from the manual and the job. Do not use a large saw to compensate for an unsafe plan.
Maintenance, Sharpening, and Carburetor Checks
Maintenance keeps the saw’s cutting and control systems in working order; it cannot make a damaged saw safe by itself. Use the exact manual for service intervals and settings. Avoid generic RPM, raker-clearance, oil-flow, and viscosity figures, because they may not fit the saw’s version or chain.
After shutting down, allow the chain to stop and the saw to cool before service or refueling. Clean the air filter, bar groove, oil holes, and cooling surfaces as the manual directs. Check chain tension and inspect the chain, bar, and sprocket for damage or wear. Sharpen or replace a chain that is dull or damaged; do not force it through wood.
A raker, also called a depth gauge, controls how much wood each cutter takes. Its setting must follow the chain maker’s specification. Likewise, use the correct bar-oil type for the saw and conditions, then confirm oil delivery with the prescribed manual procedure. Do not assume a generic flow rate proves the system is working.
Carburetor tuning affects engine speed and fuel mixture. A tachometer-equipped technician should set it to the applicable manual’s limits. If the saw races, stalls, runs poorly, or has an uncertain tune, stop using it until it has been checked. Guessing at a high-speed setting can damage the engine and create a safety risk.
Service takeaway: Match sharpening and tuning data to the exact chain and saw documentation. When those details are missing, use a qualified service shop rather than a generic setting.
Storage and Seasonal Care
Storage care helps limit fuel-system trouble and corrosion while the saw is not in use. Follow the applicable manual for fuel handling and storage; legacy manuals may not give the same directions as newer ones. Store the saw securely, away from children, heat, and ignition sources.
Before putting it away, shut it down, let it cool, and clean it as directed. Inspect the chain and bar, and address damage before the next job. Keep the saw dry and protected, with the chain covered. For fuel remaining in the tank or fuel-system preparation, follow the specific manual and fuel maker’s guidance rather than applying a universal rule.
Before returning to work, repeat the pre-use inspection. Check controls, chain tension, visible leaks, and the attachment match. If storage was long or the saw’s history is unclear, have it inspected before relying on it for demanding work.
Storage takeaway: Use the manual’s storage instructions, then recheck the whole saw before restarting.
Is a Used 077 the Right Buy?
A used 077 may suit an experienced operator who needs a large saw for appropriate ground-based work and can verify the machine, attachments, and service support. Its published power and displacement are not enough to judge a specific listing. Ask for the serial number, clear photos of markings, service records, and a cold-start demonstration where safe and appropriate.
Budget for a qualified inspection and possible repairs. A low asking price may not reflect the cost or difficulty of finding parts. Compare the total ready-to-work cost with other saws that have documented condition and support. If the seller cannot verify the model, fuel history, or attachment match, treat that uncertainty as a real cost.
Buying takeaway: Buy condition and support, not rarity or a specification line.
Frequently Asked Questions
These short answers cover the questions buyers most often need to settle before choosing, configuring, or operating an older 077. The exact serial-number-era manual remains the final reference for fuel, service, and cutting-attachment details.
How much power does a STIHL 077 have?
Commonly published figures list about 6.5 kW. Confirm the specification for the exact version, and remember that wear and condition affect a used saw’s performance.
How much does the 077 weigh?
A commonly published figure is about 10.6 kg for the powerhead alone. The complete saw weighs more with its bar, chain, and fluids.
What is the 077’s engine displacement?
It is commonly listed at about 111 cm³. Displacement alone does not determine the right bar length or prove that a particular saw is in good condition.
What fuel mix should I use?
Use the ratio and oil type in the applicable manual. Do not assume 50:1 applies to every legacy version, and never use straight gasoline or an unverified mix.
Does the 077 use 3/8-inch or .404-inch chain?
Depending on setup, 077 saws may use either pitch. Read the bar, chain, and sprocket markings; also match gauge and drive-link count.
Can I choose a long bar because the engine is large?
No. Bar length must suit the exact saw, manual, attachment, condition, and job. Displacement alone is not a safe selection rule.
What chain-oil setting or carburetor RPM should I use?
Use the applicable manual and chain maker’s specifications. Have carburetion set by a tachometer-equipped technician; do not rely on generic settings.
Is a chain brake enough to prevent kickback injury?
No. Keep the bar nose clear, use a firm two-handed grip, and maintain control. A chain brake does not eliminate kickback risk.
Is the 077 suitable for felling?
Only for a competent operator using a sound, properly configured saw and a planned felling method. Do not fell when tree conditions or your training exceed your ability.
What should I check before buying one used?
Verify the model and serial number, inspect controls and visible leaks, confirm attachment markings, and seek a qualified inspection. Ask about service history and parts support.
(This article was written by one of our staff writers, Marcus Thorne. Visit our Meet the Team page.)
