This is some Chainsaw Specs : From American Arborist! Have a nice day! Stumper Husqvarna Chain Saw Specs Model Cylinder Displacement Power Output Maximum RPM Fuel Volume Fuel Level Spark Plug Gap Oil Volume Smart Start Oiler Auto-tune Chain Pitch Guage Bar Weight (lbs) T540 37.7 cc 2.4 hp 10,200 11.5 oz visible NGKCMR6H .02" .42 pint n/a adjustable yes 3/8 LP .050 12"-16" 8.6 T435 35.2 cc 2.0 hp 10,000 8.79 oz n/a NGKCMR6H .02" .36 pint n/a automatic n/a 3/8 LP .050 12"-16" 7.5 240 38.2 cc 2.0 hp 9,000 n/a RCJ7Y 02" .09 pint n/a fixed n/a .325 .050 12"-16" 10.3 435 40.9 cc 2.2 hp 9,000 12.5 oz NGKBPMR7A .02" .5 pint n/a fixed n/a .325 .050 16" 9.2 445 45.7 cc 2.8 hp 9,000 15.22 oz visible NGKBPMR7A .02" .55 pint yes fixed n/a .325 .050 16"-20" 10.8 450 50.2 cc 3.2 hp 9,000 15.22 oz visible NGKBPMR7A .02" .55 pint yes fixed na .325 .050 14"-20" 10.8 543XP 43.1 cc 2.95 hp 9,000 14.2 oz. n/a NGKCRM7A .03" .57 pint yes adjustable n/a .325 .050 14"18" 9.92 455 55.5 cc 3.5 hp 9,000 14.88 oz n/a NGKBPMR7A .02" .70 pint yes adjustable n/a 3/8 .050 14"-20" 12.8 460 60.3 cc 3.6 hp 9,000 14.88 oz n/a NGKBPMR7A .02" .70 pint yes adjustable n/a 3/8 .050 14"-20" 12.8 550XP 50.1 c 3.7 hp 10,2000 17.58 oz yes NGKCMR6H .02" .57 pint yes adjustable yes .325 .058 14"-20" 10.8 555 59.8 cc 4.3 hp 9,600 21.98 oz yes NGKCMR6H .02" .70 pint yes adjustable yes 3/8 .050 14"-20" 12.35 365 70.7 cc 4.9 hp 10,200 26.04 oz n/a NGKBPMR7A .02" .89 pint yes adjustable n/a 3/8 .050 16"-28" 14.11 372XP 70.7 cc 5.3 hp 9,600 26.04 oz n/a NGKBPMR7A .02" .84 pint yes adjustable n/a 3/8 .058 16"-28" 13.4 562XP 59.8 cc 4.7 hp 9,600 21.98 oz yes NGKCMR6H .02" .70 pint yes adjustable n/a 3/8 .050 16"-28" 13.01 576XP 73.5 cc 5.7 hp 9,600 23.67 oz n/a NGKBPMR7A .02" .85 pint yes automatic n/a 3/8 .050 16"-28" 14.55 390XP 88 cc 6.5 hp 9,600 30.43 oz n/a NGKBPMR7A .02" 1.06 pint yes automatic n/a 3/8 .050 18"-32" 15.65 395XP 94 cc 7.1 hp 8.700 30.43 oz n/a NGKBPMR7A .02" 1.1 pint yes automatic n/a 3/8 .058 18"-36" 17.4 3120XP 118.8 8.4 9,000 42.27 n/a NGKBPMR7A .02" 1.48 pint yes automatic n/a .404 .063 24"-42" 22.9