A used Stihl FS 85 typically costs $100-$250, with an average price near $175; clean, running units or dealer-refurbished examples can cost more. Because this older gas trimmer is no longer a current model, condition, included cutting equipment, local supply, and repair needs matter more than a standard new-retail price.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Used FS 85, as-is | $75 | $150 | $250 | Running condition and wear vary |
| Used, serviced | $150 | $225 | $350 | May include tune-up or accessories |
| New old stock | $300 | $425 | $550 | Uncommon; verify condition and warranty |
| Common repair visit | $50 | $125 | $250 | Diagnostic and parts can change total |
What a running Stihl FS 85 usually costs
For a complete, working FS 85 with a usable trimmer head, a reasonable private-sale estimate is $100-$250. Around $175 is a practical midpoint for an older unit that starts, idles, and accelerates reliably but shows ordinary cosmetic wear. A dealer-serviced machine may reach $250-$350 when it has documented work, a warranty, or useful attachments.
New old stock is different from a new current-production trimmer. A boxed or unused FS 85 may be listed for $300-$550, but age-related fuel-system or storage issues can still occur, and warranty coverage should be confirmed in writing. For most buyers, the best price comparison is a tested used unit against the cost of repairing one that does not run.
Assumptions: U.S. private-party prices, standard cutting head, normal wear, and no major engine damage.
How engine condition and included parts change the price
Condition often matters more than appearance. A cold-start demonstration, smooth idle, responsive throttle, and intact safety guards support the upper end of the used range. A machine that only runs with choke, stalls when warm, or has compression concerns should be priced as a repair project rather than as a ready-to-use trimmer.
Check whether the sale includes a harness, blade, guard, service records, or spare head. These items may add practical value, but a worn cutting head or damaged accessory should not justify a large premium. Missing parts can create an additional expense after purchase. A running test and clear parts list are worth more than a seller’s claim that the trimmer only needs a minor adjustment.
What repair shops may charge for FS 85 parts and labor
Repair estimates depend on the fault and whether compatible parts are available. A tune-up may include a spark plug, air filter, fuel filter, and carburetor inspection; carburetor work or fuel-line replacement costs more. Ask whether the shop charges a diagnostic fee that is credited toward approved repairs.
| Quote item | Typical range | What can change it |
|---|---|---|
| Diagnostic fee | $30-$75 | May be waived with repair |
| Basic tune-up labor and parts | $75-$150 | Fuel-system cleaning and parts condition |
| Carburetor service or replacement | $100-$225 | Part availability and shop labor |
| Ignition or engine repair | $150-$350+ | Testing, internal damage, and parts |
Small-engine labor commonly runs about $75-$125 per hour, though minimum charges are common. Get a written estimate separating diagnosis, parts, and labor before authorizing work.
Which displacement, carburetor, and damage issues raise the quote
The FS 85 is an older roughly 25 cc class trimmer, so age and storage history are key quote variables. Stale fuel, brittle fuel lines, a clogged carburetor, or a damaged primer assembly can turn an apparently inexpensive purchase into a shop visit. Ask when the fuel system was last serviced and whether the engine has been tested from a cold start.
Engine compression and crankcase condition are more serious thresholds than cosmetic wear. If a technician finds low compression, scoring, or a major internal fault, repairs can exceed $250 and may approach or surpass the value of a typical used unit. Missing guards or a bent shaft also affect safe operation and replacement cost. Price major engine damage as a replacement decision, not as a routine tune-up.
How local supply shifts FS 85 prices across the U.S.
Used equipment prices vary with local demand and the supply of older Stihl machines. In areas with many landscaping contractors and active resale listings, a clean unit may sell near the top of the typical range. Rural markets can have lower asking prices but fewer tested choices, while shipping an older gas tool may add cost and complicate returns.
As a rough comparison, urban or high-demand areas may run about 10%-20% above a typical local private-sale price; less competitive rural listings may be 5%-15% below it. These are budgeting adjustments, not fixed regional price rules. Check nearby listings for comparable running condition and accessories before judging an out-of-area offer. Compare local completed or recently removed listings when possible, not only ambitious asking prices.
Three FS 85 purchase examples with realistic totals
| Scenario | Purchase | Added cost | Estimated total |
|---|---|---|---|
| Running private-sale unit | $150 | $0-$25 for line or basic supplies | $150-$175 |
| Needs carburetor service | $100 | $100-$225 shop repair | $200-$325 |
| Dealer-serviced with harness | $275 | $0-$30 for consumables | $275-$305 |
The examples assume the unit is otherwise complete and does not need major engine work. A nonrunning trimmer with an unknown fault has a wider downside: diagnostic charges apply even if the final repair is declined. Compare the all-in amount, including a likely first repair, rather than comparing sale prices alone.
When repair beats replacing an older FS 85
A repair under about $100 can make sense when the trimmer is complete, starts reliably after service, and has no shaft or engine damage. At $150-$250 in repairs, compare the total investment with a tested replacement and check whether the shop can source parts. A major engine repair is harder to justify on a machine bought near the top of the used range.
For a low-cost purchase, request a cold start, run the throttle through its range, inspect the shaft and guard, and confirm the model and included attachments. Set aside $25-$75 for fresh fuel, line, or minor consumables if the machine has been stored. Walking away from an uncertain engine is often cheaper than buying an unverified repair project.