A torque wrench applies an exact amount of pressure on bolts to secure them without over or under tightening them. Mechanics use torque multipliers to tighten bolts to specifications with less stress and time. Torque multipliers reduce the amount of turns on a bolt by their ratio. A 5:1 ration torque multiplier allows 1/5 of the amount of turns on a wrench to achieve the correct torque specification.
Determine the torque specifications for the item to tighten. Owner’s manuals and mechanic manuals for motorcycles and vehicles supply torque specifications.
Divide the torque specification by the torque multiplier. For example, if a bolt requires 20 foot pounds of torque and the torque multiplier is a 5:1 ratio, divide 20 by 5 to get 4 as the torque multiplier.
Grasp a torque wrench in the center of the tool with one hand and turn the end of the handle to the "4" mark for 4 foot pounds of pressure.
Place the torque multiplier on the bolt to tighten with the support arm touching a solid metal part for sturdiness. The solid metal part may be either inside the support arm or to the left of the support arm.
Place the torque wrench in the top of the torque multiplier.
Turn the torque wrench clockwise to tighten the bolt. Stop turning the torque wrench as soon as a clicking noise is audible.
Remove the torque wrench by pulling it straight outward from the torque multiplier.
Pull the torque multiplier straight out to remove it from the bolt.
