Blower
Stihl BG 86
2-Stroke
The Stihl BG 86 is a 27.2cc 2-stroke handheld blower and the most powerful in Stihl's BG series, producing significantly higher air velocity than the BG 55 and BG 56 despite identical displacement. The performance gain comes from an optimized blower housing and impeller geometry. The BG 86 targets landscaping professionals and prosumers who need a handheld unit capable of moving wet leaves and heavy debris. It runs a Zama carburetor. Under commercial use, monthly fuel system inspection and seasonal air filter cleaning are routine.
Stihl BG 86 quick specs
- Equipment
- Blower · 2-Stroke
- Covered Parts
- Spark Plug, Air Filter, Fuel Filter, Carburetor, Primer Bulb, Fuel Line
- OEM References
- 0000 400 7011, 4241 120 1800, 0000 350 3502, 4241 120 0607, 1130 350 6200, 4241 358 7700
- Model Family
- BG 86
- Last Reviewed
- 2026-05-20
- Data Confidence
- Aftermarket-confirmed
- Sources Consulted
- OEM part references, Aftermarket catalog cross-references, Retailer fitment listings
Quick Fitment
| Part Type | OEM / Spec | Common Option | Confidence |
|---|---|---|---|
| Spark Plug | 0000 400 7011 | NGK CMR6H | Medium · 2026-05-20 |
| Air Filter | 4241 120 1800 | OEM 4241 120 1800 | Low · 2026-05-20 |
| Fuel Filter | 0000 350 3502 | OEM 0000 350 3502 | Low · 2026-05-20 |
| Carburetor | 4241 120 0607 | Zama C1Q-S204 | Medium · 2026-05-20 |
| Primer Bulb | 1130 350 6200 | Zama 0057003 | Medium · 2026-05-20 |
| Fuel Line | 4241 358 7700 | OEM 4241 358 7700 | Low · 2026-05-20 |
Tune-Up Kit
Common service bundle: spark plug, air filter, fuel filter, carburetor, primer bulb.
Maintenance Interval
Inspect filters and fuel lines each season, replace spark plugs during annual service, and service carb/fuel-system parts when starting or idle symptoms appear.
Before You Buy
- Confirm the full model is Stihl BG 86, not just the family name.
- Check serial number, production date, and regional variant before ordering.
- Match the old OEM number stamped on the removed part when available.
- Compare dimensions, plug gap, thread, fuel line diameter, or chain pitch/gauge where applicable.
Common Mistakes
- Ordering from a family listing without checking the exact sub-model.
- Buying a kit that includes the headline part but wrong gaskets, lines, or bulb size.
- Choosing the wrong carburetor revision when multiple versions were used.
- Installing the correct plug number with the wrong gap.
Symptoms Map
Won't start
Spark plug, fuel filter, primer bulb, carburetor
Starts then dies
Fuel filter, fuel line kit, carburetor
Bogs under throttle
Air filter, carburetor, spark plug gap
Primer will not fill
Primer bulb, fuel line routing, in-tank filter
Replacement Options
Best OEM equivalent
Start with OEM references 0000 400 7011, 4241 120 1800, 0000 350 3502, 4241 120 0607 and match the removed part before choosing a listing.
Common aftermarket option
Cross-check aftermarket listings such as NGK CMR6H (spark plug), Zama C1Q-S204 (carburetor), Zama 0057003 (primer bulb) against the OEM number and dimensions.
Best for annual tune-up
Bundle spark plug, air filter, fuel filter when servicing the Stihl BG 86 at the start of the season.
Best if replacing fuel system
Compare the fuel filter, carburetor, primer bulb together so line routing, bulb size, filter style, and carburetor connections match.
Best budget kit
Use kit listings only when every included part matches this model page; cheap kits often mix correct headline parts with wrong bulbs, lines, or gaskets.
FAQ
Does this fit other Stihl models? Use this page for the exact Stihl BG 86 unless a manual, dealer listing, or removed part confirms another model.
Should I buy OEM or aftermarket parts for the Stihl BG 86? Use OEM when the part controls fuel metering, ignition, or safety. Aftermarket kits can be useful for routine filters, bulbs, plugs, and tune-up bundles when the OEM number and dimensions match.
How do I avoid ordering the wrong carburetor for the BG 86? Match the carburetor number stamped on the removed unit, then compare linkage, choke setup, primer routing, gasket stack, and fuel-inlet direction.
What should I check before replacing fuel-system parts? Photograph the old fuel-line routing, match line diameter and filter style, and compare primer bulb size before buying a kit.
Spark Plug
- Reviewed
- 2026-05-20
- Dimensions
- CMR6H; 0.5mm gap
Air Filter
- Reviewed
- 2026-05-20
- Variant notes
- Also fits BG 56, BG 66, SH 56, SH 86
| Brand | Part # | |
|---|---|---|
| No aftermarket listing is published for this part yet. Use the OEM reference and verify with a dealer or service manual before ordering. | ||
Fuel Filter
- Reviewed
- 2026-05-20
- Variant notes
- In-tank pickup fuel filter; fits many Stihl 2-stroke models
| Brand | Part # | |
|---|---|---|
| No aftermarket listing is published for this part yet. Use the OEM reference and verify with a dealer or service manual before ordering. | ||
Carburetor
- Reviewed
- 2026-05-20
- Variant notes
- Zama C1Q-S204; also fits BG 56, SH 56, SH 86
| Brand | Part # | |
|---|---|---|
| Zama | C1Q-S204 | Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying. |
Primer Bulb
- Reviewed
- 2026-05-20
- Variant notes
- Fits BG 55, BG 56, BG 65, BG 66, BG 75, BG 85, BG 86 and other Stihl 2-stroke equipment
| Brand | Part # | |
|---|---|---|
| Zama | 0057003 | Some links may be affiliate links. Match the OEM number, dimensions, and model variant before buying. |
Fuel Line
- Reviewed
- 2026-05-20
- Variant notes
- Fuel pickup line; also fits BG 56, BG 66, SH 56, SH 86
| Brand | Part # | |
|---|---|---|
| No aftermarket listing is published for this part yet. Use the OEM reference and verify with a dealer or service manual before ordering. | ||