FJ
The 245 lb/in max torque of that 1/4" drive wrench will give a torque of 20.4 lb/ft which is more than enough for doing a oil change.
The only fly in the ointment is, the large sockets needed for the main oil drain and the forward oil drain under the crankshaft almost always have a 3/8" drive.
For just a few bucks you can buy an adapter so the 1/4" drive wrench will work with 3/8" drive sockets.
http://www.harborfreight.com/hand-tools/sockets-ratchets/4-pc-high-visibility-socket-adapter-set-62851.htmlThere are higher priced sets of these intended for use with an impact wrench but for what your doing, these are more than good enough.
While I'm here, this is HF's 1/4" drive torque wrench.
Although its max torque is 200 inch pounds that still gives a torque max of about 17 foot pounds which is more than the drain plug needs.
http://www.harborfreight.com/1-4-quarter-inch-drive-click-type-torque-wrench-2696.htmlPS: There is nothing wrong with the bar type torque wrenches and they are cheaper than the "click" style but for use on draining the oil they would be a total pain in the ass.
You have to see the scale where the pointer is showing the torque and with the wrench being under the bottom of the motorcycle you would have to figure out a way of seeing the scale.