TEST REPORT Stihl MS 261 C-M Test number: 6909 OWNER OF THE TEST CERTIFICATE: Manufacturer and applicant: Andreas Stihl AG & Co. KG Badstrasse 115 D- 71336 Waiblingen www.stihl.de MS 261 C-M MS 261 C-MVW MS 261 C-BM MS 261 C-MQ 6909 – Stihl MS 261 C-M Test Results and Evaluations Chain saws STIHL MS 261 C M (with electronic engine management) STIHL MS 261 C MQ (with electronic engine management and Quickstop) STIHL MS 261 C BEM (with electronic engine management, Ergostart and quick chain tensioner) STIHL MS 261 C M VW (with electronic engine management, handle and carburetor heating) Tested with 40 cm Stihl Rollomatic E saw bar and 26 RM saw chain Andreas Stihl AG & Co. KG; Badstrasse 115; D- 71336 Waiblingen Test item Test results Class Chain saw in the power class up to 3 kW for professional use Evaluation Engine power P max = 3,0 kW Md max bei 2,6 kW Engine speed 10000 min-1 Torque 2.8 Nm Spec. fuel consumption 59 kW/l 8000 min-1 3.1 Nm 52 kW/l N.E. Fuel consumption absolute / specific max. power 1.8 l/h 447 g/kWh max. torque 1.6 l/h 467 g/kWh + Exhaust emission o Guideline 2012/46/EG Approval number: e1*97/68SH3-IIA*2012/46*0757*00 Chain lubrication Oil consumption min / max at 5000 min-1 3 ml/min at 9000 min-1 5 ml/min 4 ml/min 9 ml/min o Noise at ear of the operator idling speed 87 dB(A) full load speed Full throttle no load 104 dB(A) 107 dB(A) Equivalent sound pressure level according to DIN EN ISO 22868: 104 dB(A) Acoustic power according to DIN EN ISO 22868: 116 dB(A) (average of full load/full throttle) 2/6 - 6909 – Stihl MS 261 C-M Test item Test results Evaluation Vibration front handle idling speed 3.0 m/s² full load speed Full throttle no load 4.5 m/s² 3.0 m/s2 rear handle 3.0 m/s² 4.5 m/s² 3.0 m/s² o Total equivalent vibration according to DIN EN ISO 22867 Front handle 3.5 m/s²; rear handle 3.5 m/s² Chain brake Handguard activation Inertia activation Actuating force 25 N aver. braking time 0,05 s horizontal acceleration 387 m/s² max. braking time 0,07 s N.E. vertical acceleration 738 m/s² Kickback Kickback angle N.E. 25 ° Weight Weight per unit power With cutting equipment Without cutting equipment 2.1 kg/kW 1.7 kg/kW + Operability / handling Control elements Easy to reach and use o Machine start Decompression valve + Combined switch for: motor ON-OFF and CHOKE + Engine control Models with electronic engine control do not have regulator screws. ++ Chain assembly Easy to access and use o Chain tensioning simple, tensioning on the side of machine o model MS 261 C-BM, side tensioner under the chain sprocket cover, no tools required + Refilling Fuel tank covers can be opened without tools, easy to access 3/6 o 6909 – Stihl MS 261 C-M Test item Test results Evaluation Maintenance Engine, air filter and spark plug cover, casing Simple, clips removable using combination wrench o Air filter No tools required + low + Reliability The piston ring broke in one test model. No further damages following the repair during the test o Operating manual clear, well illustrated + cleaning soiling Operator safety EG-type examination test DPLF K-EG-2009/5306 GS- Test DPLF K-GS-2009/5307 o. B. Rating: ++ / + / o / - / --./.(o = Standard / NE= no evaluation, complies with tolerance value) Threshold values and evaluation criteria are described in the “Information for the Utility Value Test” available from the DLG and KWF. 4/6 6909 – Stihl MS 261 C-M Description and technical data Engine - Air-cooled single-cylinder two-stroke engine - Displacement 50.2 cm³; bore 44.7 mm; stroke 32 mm - Fuel: minimum octane number 90ROZ (Mixture 1:50) or two-stroke special fuel with “KWFTest”; manufacturers recommendation: Stihl MotoMix - Spark plug NGK BPMR 7A - Idling speed 2800 min-1; max. speed 14000 min-1 Cutting equipment - Clutch drum with external chain sprocket - Guide bar with 11 tooth sprocket nose - Half or full chisel tooth chain - Pitch 0.325“ guage 1.6 mm - Various guide bar lengths and chain types available for this saw model Main dimensions and weights MS 261 (measured values) Length Width Height Stump height Tank volume Weight incl. cutting equipment 35 cm 785 mm engine unit without spiked bumper 425 mm engine unit 180 mm incl. handle 245 mm engine unit 205 mm with front hand guard 285 mm chain sprocket cover 20 mm handle 30 mm fuel 500 ml chain oil 270 ml incl. cutting equipment 35 cm 6,4 kg without cutting equipment 5,2 kg 5/6 6909 – Stihl MS 261 C-M Test Test facilities Kuratorium für Waldarbeit und Forsttechnik, Gross-Umstadt DLG-Testzentrum Technik & Betriebsmittel, Gross-Umstadt Field test Forstliches Bildungszentrum Königsbronn Forstliche Ausbildungsstätte Ort, A-Gmunden Waldwirtschaft Verband Schweiz Solothurn Authors P. Müßig, KWF, Gross-Umstadt W.Stindtt, DLG, Gross-Umstadt FPA/DLG- Test commission “Geräte und Werkzeuge“(“Equipment and tools”) Chairman: Sebastian Paar, FBZ Laubau FPA/DLG-approval until January 2019 In acknowledgment of the performance in the KWF test, the approved product is also licensed to carry the following test signs: “Passed DLG SIGNUM TEST “ Published by DLG-Testzentrum Technik & Betriebsmittel Max-Eyth-Weg 1 D-64823 Gross-Umstadt Telephone: +49 069/24788-652 Fax: +49 069/24788/110 E-mail: [email protected] Internet: www.dlg-test.de ENTAM European Network for Testing of Agricultural Machines c/o ENAMA Via Venafro, 5 I-00159 Rome Telephone: +39 06 40860030 Fax: +39 06 4076264 E-mail: [email protected] Internet: www.entam.com Kuratorium für Waldarbeit und Forsttechnik e.V. Forsttechnischer Prüfungsausschuss (FPA) Spremberger Strasse 1 D-64823 Gross-Umstadt Telephone: +49 06078/785-0 Fax: +49 06078/785 50 E-mail: [email protected] Internet: www.kwf-online.de Supported by the Federal Ministry of Consumer Protection, Food and Agriculture per decision by the German Bundestag and the State Forest Administrations 6/6
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