You don't need a torque wrench to reset tensioner.(doohickey). Just pull the rubber cap, back the bolt out just enough to make it loose, (it's generally a half turn on my bike) while bike is vertical, tap the lower case with a rubber mallet, retighten screw snug. Done. The doohickey would cause serious vibration on the bike and A LOT of noise from the lower left side case if something was wrong.Good thing is Gen 2 doohickeys haven't been shown to break, just have longer springs.
what size front sprocket is on the bike? If it is larger than stock it will most likely rub on the front chain guard as well as possibly make it feel a little under powered in higher gears. Easy to check 4 bolts to pull off chain guard, marks on my bike are at furthest front point of chain and base where chain exits guard. How snug is your chain? When too tight it will cause a whining noise on the sprockets on my bike. Just trying to give some easy things to check, KLRs throw off a lot of random noises.
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