Stihl engine series 1135 · PRO
MS 341 · MS 361
MS 341 parts carry the 1135 prefix — it is the MS 361’s sibling, not an MS 340 variant.
Chains & bars that fit the MS 341 · MS 361
Pitch & gauge 3/8″ · .050–.063″ · recommended bar 16–25″ · bar mount 3003 / D025 · round file 7/32" (5.5 mm)
Chain & bar by length
| Bar | Drive links | Shop |
|---|---|---|
| 16″ | 60 DL | Chain → Bar · 3003 → |
| 18″ | 66 DL | Chain → Bar · 3003 → |
| 20″ | 72 DL | Chain → Bar · 3003 → |
| 22″ | 76 DL | Chain → Bar · 3003 → |
| 25″ | 84 DL | Chain → Bar · 3003 → |
Drive-link counts come from STIHL's saw-chain catalog. Bar searches include mount 3003 / D025; still confirm the mount stamp, pitch, gauge and drive-link count on your installed bar before ordering.
Files, oil & sharpening
Suggested match: Oregon 72/73/75 EXL. Confirm the drive-link count for your exact bar length before ordering. These are equivalent aftermarket (Oregon) chains, not genuine STIHL chain — STIHL sells its own chain through its dealer network, and we're not affiliated with STIHL. New to fitment? See the bar-mount identification guide and chain & cutter guide.
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Factory tuning settings
| Idle speed | 2,800 rpm |
| Max speed | 13,500 rpm |
| L screw (low speed) | 1/4 turn |
| H screw (high speed) | 3/4 turn |
| LA screw (idle stop) | 1/2 turn |
| Confidence | reconstructed |
Screw figures are turns open from lightly seated. These are the figures every model in this family shares; an individual model page may be more specific. Matched on the base model number rather than this exact variant, so treat it as a starting point. Set the final mixture by ear and tachometer against the machine in front of you — running a two-stroke lean to hit a published number is how pistons get scored.
Models in this family (2)
404 part numbers across 15 exploded views — the Diagrams column goes straight to them.
| Model | Years | Market | Rarity | Diagrams | Notes |
|---|---|---|---|---|---|
| MS 341 59 cc | 2003–11 | EU/AU | Uncommon | — | 59 cc / 4.2 kW; never US-sold |
| MS 361 59 cc | 2003–10 | Global | Very Common | 15 | 59 cc / 4.6 kW; well-regarded pro mid |
Service bulletins (10)
Running changes and fixes STIHL published for this engine family.
- TI 48/2010 Crankshaft/flywheel; Mounting the flywheel; Summary
- TI 11/2007 Crankcase, Chain sprocket cover; Summary
- TI 39/2006 Chain quick tensioning; Cover; Tank housing, rubber buffer; Set wrap-around handlebar (Special accessory for MS 361); Summary
- TI 48/2005 Shroud, air filter; Shroud, air filter kit; Summary
- TI 36/2005 Clutch, clutch shoe; Stop buffer; MS 341, 361, 361 C: crankshaft / flywheel; Summary
- TI 21/2005 Limiter cap; Segment; Spare parts; Removal of the limiter caps; Summary
- TI 16/2005 Muffler; Stop buffer; MS 341: STIHL ElastoStart easy-start system; MS 361: Carburetor box cover; Crankcase and ball bearing; Tightening torques; Summary
- TI 10/2004 Chain catcher; Annular buffer, tank housing
- TI 2/2004 Chain Brake, Brake Spring
- TI 32/2003 Technical description; Specifications; Service accessories and special tools; Service note; Spare parts
Data confidence
Verify anything tagged estimated or approx against STIHL spec sheets.
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