SB20 - Oh Snap!
Breaking a Drive Belt Tensioner Adjusting SB20 drive belt tension is something your should consider performing every couple of years. Here's how: Stages SB20 - Drive Belt Adjustments The good news: A properly adjusted belt is quieter and extends the life of the drivetrain. The bad news: The belt tensioners ( one on each axle ) can break if you over tighten them. The tensioner bolt will typically snap next to the washer assembly 😖. DIY Fix Getting SB20 replacement parts is challenging these days. Here's how to fix a broken tensioner. 1. Drill out the broken bolt that is welded to the tensioner ring. 2. Find replacement bolts. I recommend M5 x 1 with thread length of 30 mm. Use stainless steel if possible. If you have a hex cap bolt, you can use it directly. If you have a round head, you will need to file one edge. You will also need matching lock nuts. You can also use SAE bolts. A 10-24 or 10-32 bolt with 1-1/4" thread length works well. Here's a ...