An Echo CS-670 usually costs about $250-$500 used in working condition, with a typical asking price near $375; clean, serviced examples can reach $650. Because this older 66.7cc saw is generally bought secondhand, condition, included bar and chain, local availability, and repair needs matter more than a current list price.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Used working saw | $250 | $375 | $650 | Price depends on start-up, compression, and wear |
| Nonrunning project saw | $75 | $175 | $300 | Useful mainly for repair or parts |
| New-old-stock saw | $500 | $750 | $1,000 | Availability and seller claims vary |
| Typical repair bill | $80 | $200 | $450 | Excludes major engine rebuilds |
Price estimates are U.S. market ranges, not an Echo manufacturer quote; condition, accessories, and location can move a listing outside them.
What a working Echo CS-670 typically sells for
Budget roughly $250-$500 for a used CS-670 that starts, runs, oils its bar, and cuts reliably. A fair-condition saw with cosmetic wear, a worn chain, or an uncertain service history often falls near the low end. A clean saw with strong compression, an intact chain brake, and a usable bar is more likely to sell around $350-$500.
Prices above $500 can be reasonable when the saw has been serviced, includes a good bar and chain, and has documented maintenance. A seller’s claim that the saw “runs” is not the same as proof that it runs well under load. Ask for a cold-start demonstration and a cut test, if practical, before treating a high asking price as justified.
Nonrunning examples commonly list around $75-$300. The lower end usually reflects missing parts, unknown engine condition, or substantial wear; the upper end is more plausible for a complete saw with a clear, limited fault. A new-old-stock unit may be advertised for $500-$1,000, but old inventory is uncommon, and storage can still affect fuel lines, seals, and carburetor parts.
Assumptions: complete saw, standard bar configuration, ordinary wear, and a private-party U.S. sale; dealer-serviced or unusually clean machines may cost more.
How the bar, engine condition, and labor shape a quote
When a CS-670 needs work, the parts bill is only part of the total. A shop may charge a minimum diagnostic or bench fee before ordering parts, and labor can exceed the saw’s resale value if the engine needs extensive work. The table gives planning ranges, not model-specific dealer pricing.
| Quote item | Low | Average | High | Typical scope |
|---|---|---|---|---|
| Inspection and carburetor service | $80 | $150 | $250 | Cleaning, adjustment, basic testing |
| Fuel lines, filter, and tune-up parts | $20 | $45 | $90 | Parts only; availability varies |
| Bar and chain replacement | $50 | $100 | $180 | Compatible bar and one chain |
| Ignition or starter repair | $35 | $100 | $220 | Parts and labor vary by fault |
| Major engine repair | $250 | $450 | $750 | May include cylinder or crankcase work |
Confirm the shop’s diagnostic charge and written repair estimate before authorizing work. Independent small-engine shops commonly charge about $75-$125 per hour, with a minimum fee that can apply even when the repair is declined. For example, 1.5 hours at $90 per hour is $135 in labor before parts or shop fees.
Bar and chain compatibility needs checking against the saw’s exact configuration. A replacement setup may cost $50-$180, depending on bar length, chain pitch, gauge, and quality. Do not assume that a seller’s bar fits every CS-670 or that a chain included with an old saw is safe to reuse.
Which wear and displacement details change the price?
Engine condition is the largest uncertainty. Compression-test readings are useful screening information, but readings depend on the gauge, test method, and engine condition. A low reading, difficult cold starting, excessive smoke, or stalling under throttle can indicate a repair risk. Ask what was tested and whether the saw has been run recently; avoid valuing an untested saw like a ready-to-work machine.
The CS-670’s roughly 66.7cc engine puts it in a substantial gas-saw class, so a worn powerhead can justify expensive work. A cylinder or crankcase repair can reach $250-$750, especially if parts are scarce or a shop must spend extra time sourcing them. If an estimate is more than about half the price of a sound replacement saw, compare the repair with buying another used unit.
Bar length and chain condition also affect a buyer’s offer. A serviceable bar and sharp, correctly matched chain might add $30-$100 in practical value compared with a bare powerhead, but worn rails, a damaged sprocket, or an unsuitable chain can erase that advantage. A longer bar is not automatically worth more if it is a poor match for the job or engine condition.
Missing safety equipment can require immediate spending. A damaged chain brake, loose handles, faulty throttle lockout, or ineffective chain catcher should not be treated as minor cosmetic issues. Depending on parts and shop labor, restoring safety-related components may add $40-$200 or more. For a saw with several defects, price the machine as a repair project rather than adding the full retail value of replacement parts to its worth.
Useful thresholds: treat a $250-plus engine estimate as a major decision point, and verify the bar’s pitch and gauge before assigning value to included cutting gear.
How private-sale, dealer, and regional quotes differ
Private-party listings are often the least expensive route, with working saws near $250-$500, but the buyer assumes more risk and usually receives no meaningful warranty. A small-engine dealer or specialist may charge $400-$700 for a serviced used saw because inspection, cleanup, and limited support add value. These are broad market expectations; an individual seller’s condition claims still need verification.
Local supply creates noticeable variation. In rural areas where homeowners, tree crews, and landowners use large gas saws, a running CS-670 may be easier to find and prices can sit about 5%-15% below a thin-market listing. In high-cost metro areas or regions with few used-saw sellers, asking prices may be 10%-25% higher. Those premiums are not a reliable measure of mechanical quality.
Shipping an older saw can remove the apparent savings. A carrier may require the saw to be drained and prepared properly, and shipping or packing can add roughly $40-$120, depending on distance and service. A local pickup lets the buyer inspect cold starting and controls; an online purchase may require budgeting for an independent inspection or immediate service.
Compare the delivered, inspected cost—not just the online asking price. Request the serial information, clear photos of the powerhead and bar, a cold-start video, and details about recent work. If the seller cannot demonstrate operation, value the saw closer to a project unit and keep repair money available.
What a repair shop may charge for common CS-670 problems
Basic service can cost $80-$200 when the saw needs cleaning, carburetor adjustment, fresh filters, or a straightforward fuel-system repair. A shop may charge separately for a diagnostic, parts, and labor, so a low advertised tune-up fee may not cover a damaged carburetor or brittle fuel lines. Ask whether the quoted service includes a test cut and bar-oil check.
Starter, ignition, clutch, and oiling-system problems can put a total bill around $100-$350. The final amount depends on whether the part is available and whether related components are also worn. Older equipment sometimes requires extra sourcing time, so obtain a parts-availability check before approving labor.
Major engine work commonly reaches $250-$750. That range may cover substantial cylinder, piston, or crankcase work, but it is not a guaranteed price for every failure. If the powerhead is damaged or parts are difficult to source, the estimate can exceed the value of the saw. A second estimate is sensible when the first quote is near $400 or more.
Shop estimate example: 1-2 hours of labor at $75-$125 per hour plus $20-$180 in parts can produce a $95-$430 bill before any major engine components.
Three realistic budgets for buying or fixing one
Use the full out-the-door amount to compare a bargain saw with a serviced one. These examples show how condition and likely first repairs change the budget; local labor and part availability will affect actual quotes.
| Scenario | Purchase or parts | Labor and fees | Estimated total |
|---|---|---|---|
| Project saw, fuel-system service | $125-$225 | $100-$200 | $225-$425 |
| Working saw, new chain and inspection | $325-$450 | $50-$150 | $375-$600 |
| Clean saw, bar and chain replacement | $450-$600 | $75-$150 | $525-$750 |
In the first example, the low purchase price only makes sense if the engine is sound and the repair is limited. A compression or internal-engine problem could push the total above $500. In the second, an inspection may reveal that no immediate repairs are needed, leaving the buyer closer to the low end. In the third, the higher total buys a more complete setup but still does not guarantee a warranty.
For a repair-versus-replace decision, compare the estimate with the local price of a tested CS-670 and the cost of a current equivalent saw. A modern replacement can cost substantially more than a used CS-670, but it may offer easier parts support and a warranty. A $450 repair on an older saw can be reasonable if the engine is otherwise healthy and the owner specifically needs this model; it is less attractive when the saw has multiple safety or powerhead problems.
How to lower the CS-670 price without buying trouble
Set a maximum total budget before negotiating. For a $350 used saw, reserve $75-$150 for inspection, a chain, or basic service; if the seller cannot demonstrate operation, lower the offer to reflect the risk. Do not count a worn bar, stale fuel, or missing cover as valuable accessories merely because they are included.
Ask for a cold start rather than a warm-engine demonstration. Check that the chain brake engages, the throttle returns, the saw idles without the chain moving, and the oiler delivers oil. A brief cut in suitable wood can help reveal bogging, but it does not replace a mechanical inspection. If the seller refuses basic checks, price the purchase as unverified or walk away.
Choose parts based on the work required. A standard replacement chain and compatible bar can be more economical than buying premium cutting gear for an occasional-use saw. Confirm pitch, gauge, drive links, and bar mount before purchasing; a mismatch can waste money or create an unsafe setup. Keep the original equipment if it is serviceable rather than replacing it by default.
For shop work, request an itemized estimate that separates diagnostic fees, labor hours, parts, and any disposal or sourcing charges. Approve only the repairs that address the actual fault, and ask whether a carburetor cleaning is likely to solve the symptom before authorizing a complete replacement. Bundling inspection with a needed tune-up can avoid paying separate minimum charges, although the shop’s written pricing should determine whether it truly saves money.
The cheapest dependable purchase is usually the saw with verified operation and the fewest immediate repairs, not the lowest listing price. Keep a reserve for safety defects and maintenance, and compare at least two local quotes when a major engine repair is proposed.