The process used to adjust the basketball goal height depends completely on the type of basketball system you own. Please note: if you own a "fixed height" basketball system, your basketball goal height may not be changeable. Some fixed height units are made with a solid pole that has no moving parts. Other fixed height basketball goals employ an extension arm that is clamped to the post using bolts to hold the arm in place. To change the rim height simply loosen the bolts, slide the arm up or down the post and tighten the bolts to hold in place.
Below is a summary of some of the more popular adjustment methods on the market.
Rear Crank - basketball goals of this type have a crank handle on the back side of the post. Turn the crank handle clockwise to raise the rim height, counterclockwise to lower.
Front Crank - basketball goals of this type have an adjustment cylinder located on the front side of the post. The adjustment cylinder has a loop at the bottom that receives a removable crank handle. Insert the hooked end of the crank handle into the adjustment loop. Then turn crank handle clockwise to raise rim height, counterclockwise to lower.
Quick Pin - these basketball goals have a spring balanced removable pin on the back side of the post. To change rim height simply slide pin to remove, then raise or lower rim height by pushing or pulling adjustment handle up or down. Replace pin at any desired height setting.
Squeeze trigger - this type using a pneumatic cylinder and a squeeze trigger on the back side of the post. Squeeze trigger, then pull down or push up on handle. When rim reaches appropriate height, release the squeeze trigger. The rim height will stay at the height where you released the trigger.
InstaJust - also known as a "stick adjust" this type of adjustable basketball goal uses an adjustment mechanism located directly behind the rim. Using a broom handle, insert one end then room handle into the cupped area of the instajust bracket and push up. Then allow the backboard and rim to descend to it lowest possible height. Then remove the broom handle and use it to push up on the bottom of the backboard. You will hear a "click" every six inches. Simply stop pushing upward when you reach the appropriate rim height. The rim will stay at the height when you stop pushing.