even out, stabilize, weigh, complement, proportion, match, nix, retract, nullify, void, invalidate, annul, withdraw, correct, offset, compensate, add, reverse, negate, wipe out/clean, cancel (out), counter, level (the playing field), equate, equal, balance (out), counterbalance, tip the balance, maintain (value), make up for, detract, temper with, outweigh, exact, neutralize, counterweigh, go against, counteract, remedy, make good, even out/up, counterpoise, countervail
pull, twist, wrench, tweak, push, install, tighten (bolts), loosen (bolts), replace (a part), repair, analyze, determine (what's wrong), torque, up, disconnect, apply (putty), seal, remove (screws/residue), screw (into place), patch (a leak), replace, tackle, disassemble, take apart, reactivate, unjam, cannibalize
flex, wrestle, saw, hit, wallop, drive, lug, drag, tap, wipe, dig, muscle, operate, ply, fit, oil, stoop (to oil), screw on, pad, whet, plug, bar, thread, ping, plug in, switch on/off, install, charge (hand tools), wind up, kick, tack, fine-tune, power, trip (a switch), grease, lubricate, rig, turn on/off, steer, prime, outfit, activate, deactivate, reactivate