Bruce -

That one is tricky, I still remember my first one. Sore back. The fewer shims between, the tighter the belt.

With a new belt start with 5 of the 6 shims inside the pulley. If you are replacing the old belt, put in the same number that came out. One shim changes the tension by 3/16 inch.

Get the shims on the studs, put on the outer pulley half, and get the nuts on the studs, finger tight. Put in the bolts finger tight. Then use a breaker bar to turn the crankshaft clockwise about a quarter turn. Finger tighten the one or two nuts/bolts that are loosest, they will be the ones farthest to the left side. Then it's rotate, tighten, rotate, tighten, many times.

I use a 10mm half-inch socket on a 4 inch extension to turn the nuts/bolts. No wrench handle is needed.

You will see the belt gradually move upwards into the proper groove. When all 6 nuts/bolts are as finger tight as possible, go around two times using a wrench. Overtightening will make big problems next time. The nut material is soft and they round off easily. DAMHIK

The B230F engine has a different PITA for this, and the $57 special tool is worth it. At least the B21 and B23 didn't need a special tool.

Good Luck,

Bob

:>)