U radu je istraživan učinak skidera Timberjack 240 C pri privlačenju drvnih sortimenata u dovršnoj i naplodnoj sječi. Terenska su istraživanja provedena na području Šumarije Okučani u odjelu 44a gospodarske jedinice Okučanska brda i na području Šumarije Nova Gradiška u odjelu 74a gospodarske jedinice Južni Psunj. Kod skidera Timberjack 240C u odjelu 44a tijekom 11 dana na radilištu je snimljeno 4406,12 minuta, što iznosi 400,56 minuta na dan odnosno 83,45 % propisanoga radnoga vremena od 480 minuta. Od ukupnoga snimljenoga vremena na efektivno vrijeme otpada 3300,02 minute ili 74,90 %, dok na opće vrijeme otpada 1106,10 minuta ili 25,10 %. Kod skidera Timberjack 240C u odjelu 74a tijekom 9 dana na radilištu je snimljeno 2641,57 minuta, što iznosi 293,51 minutu na dan, odnosno 61,15 % propisanoga radnoga vremena od 480 minuta. Od ukupnoga snimljenoga vremena na efektivno vrijeme otpada 2157,20 minuta ili 81,66 %, dok na opće vrijeme otpada 484,37 minuta ili 18,34 %. Dodatno vrijeme iznosi 16,09 % i 20,37 % efektivnoga vremena. Skider Timberjack 240C pripada skupini visoko učinkovitih strojeva na privlačenju drva, a posebno u oplodnim sječama primjenom poludeblovne i deblovne metode. Za primjenu takva skidera potrebno je prethodno izraditi elaborat radilišta sa svim utjecajnim čimbenicima te neprestano nadzirati tijek rada. Privlačenjem drvnih sortimenata postižu se značajno manji učinci zbog prosječno manjega obujma tovara.; This paper examines the effect of Timberjack 240 C in timber extraction in the final and seeding felling. Field surveys were conducted in the area of Okučani Forest Office, compartmet 44a of the Management Unit »Okučanska brda« and in the area of Nova Gradiška Forest Office, compartment 74a of the Management Unit »Južni Psunj«. For Timberjack 240 C in the compartment 44a, during 11 days, 4406.12 minutes were recorded at the work site, which is 400.56 minutes per day, or 83.45% of the prescribed working time of 480 minutes. Of the total recorded time, the effective time is 3300.02 minutes or 74.90%, while the general time is 1106.10 minutes or 25.10%. For Timberjack 240 C in the compartment 74a, 2641.57 minutes were recorded during 9 days at the work site, which is 293.51 minutes per day, or 61.15% of the prescribed working time of 480 minutes. Of the total recorded time, the effective time is 2157.20 minutes or 81.66%, while the general time is 484.37 minutes or 18.34%. Allowance time is 16.09% and 20.37% of the effective time. Skidder Timberjack 240 C is one of the most efficient machines for timber extraction, and especially for final felling, when using the half-trunk and trunk method. For the application of such skidder, it is necessary to prepare the study site with all the influencing factors and constantly monitor the workflow. In skidding wood assortments, significantly smaller effects are achieved due to a smaller load volume.