Echo CS-3510-16 Chain Saw 16" Bar Profession Rear Handle 34.4ccECHO CS 3510 16 Chain Saw 16" Bar Profession Rear Handle 34. 4cc ECHOs CS 3510 puts awesome power in your hands. Its ideal for storm clean up, light firewood cutting, light limb trimming and felling trees up to 28 inches in diameter. Its lighter and has more power for its size bringing greater productivity and less fatigue for the user. Features: 34. 4cc commercial grade gas engine Lower weight means less fatigue and greater productivity i 30 starter