Model FL2500 FL3600 FL3800 FL4100 FL4500 FL5200 FL6500 Max Cutting Diameter 10'' (25 cm) 12" (30 cm) 14"(35 cm ) 16"(40 cm ) 18" (45 cm) 20"(50 cm ) 24"(60 cm ) Engine Type: Air Cooling Single Cylinder , Two stroke Displacement (cm3) 25.4 35.8 37.2 40.1 45 49.3 62 Rated output power 0.9 kw / 1.2 HP 1.1kw / 1.46HP 1.2 kw / 1.6 HP 1.5 kw / 2 HP 1.8kw / 2.4HP 2.2 kw / 3 HP 3.2 kw / 4.3 HP Idling speed 3500 r/min 3200 r/min 3000 r/min 3000 r/min 3000 r/min 3000 r/min 3200 r/min Two-cycle Oil/ Gasoline Mixing Ratio 1:35 1:25 1:50 1:50 1:35 1:35 1:35 Fuel Tank Capacity 230 ml 290 ml 390 ml 390 ml 550 ml 550 ml 670 ml Chain oil tank Capacity 160 ml 230 ml 210 ml 210 ml 260 ml 260 ml 350 ml Case QTY 3 pcs 3 pcs 2 pcs 2 pcs 2 pcs 2 pcs 2 pcs G.W / N.W 18 / 17 kg 17 / 14 kg 14.5 / 13.5 kg 15 / 14 kg 18 / 17 kg 18 / 17 kg 22 / 19 kg Package Measurement (mm) 810 x 310 x 270 810 x 380 x 260 555 x 435 x 325 555 x 435 x 325 550 x 470 x 320 560 x 470 x 350 630 x 480 x 350 Certificate GS, EMC, CE, EC-I, EC-II, EPA Price port Fob Ningbo bar oregon (or Chinese) bar chain oregon (or carlton or Chinese) chain caburetor walbro (or Chinese) carburetor Loading qty ( 20'Q/ 40'Q/ 40HQ) 1221 / 2547 / 2991 1020 / 2145 / 2520 704 / 1468 / 1722 704 / 1468 / 1722 628 / 1310 / 1538 600 / 1250 / 1466 520 / 1088 / 1276