Good point about lubricated fasteners. Torque values are stated for dry fasteners, while lubricated fasteners require something like 25-30% less torque. The natural response is, "Isn't a slippery bolt more likely to back out? Wouldn't you need to tighten it more?"
I've quoted the following from an article on general torque specifications from an antiseize publication:
As noted on available charts, torque values should be reduced by 25% for lubricated fasteners to achieve the similar stress as a dry fastener.
Torque values may also have to be reduced when the fastener is threaded into aluminum or brass.
The specific torque value should be determined based on the aluminum or brass material strength, fastener size, length of thread engagement, etc.
Lubricated means coated with a lubricant such as engine oil, thread sealant or threadlocker.
I quoted this last part because the majority of work on a motorcycle involves threading a steel fastener into aluminum. Some of it, not of high strength or quality. Also, to point out that thread locker is considered a lubricant when installing a bolt. EASY to over torque a fastener when this is not observed.
Over torque of a fastener in those cases will result in stripped out threads of stated aluminum. Snapped off fasteners may also result.
I have to agree with FOG in this case. The fact that, the majority of bolts used, specifically on an engine (EX 500 or otherwise) are small. Tiny really. Most are a 6mm diameter bolt or less. Threaded into aluminum....or a silvery gray cheese like substance that passes for aluminum.
For an amateur, or a newb, a torque wrench can induce a misguided dependence that it will save them from a mistake. See the above if you disagree with that.
I posted what I did about torque wrenches for the more experienced members here but with the intent to help educate others about torque wrenches in general. What the differences are, what are most common and which are more cost effective to buy.
Personally, I want to know how much torque I am applying. Not so much for the purposes of following a torque chart, I can tell what I want to apply but I don't know until I can measure it. IE, on a small fastener, I know it doesn't need a great deal of torque.
When I torque a small fastener, and I read the torque chart specs for that specific fastener in inch pounds, right away I know to be gentle.
12 inch pounds is one foot pound. Not too difficult to master. 10 NM on the other hand, I have to convert that into inch pounds or foot pounds.
At least until my digital shows up. All my Ducati torque specs are in NM. The digital torque wrench displays NM when selected. That makes things easier for me.
That said, when I see a torque spec of 17 inch pounds, I don't even bother reaching for a torque wrench. I can exert more than that with a 1/4" drive shorty ratchet.
For perspective that's less than 1.5 ft lbs. Most of us twist a screw driver with more force than that. Which brings me back to why I agree with FOG on this.