207398: Belt spacer shim allows use of 1-5/16 belt in 102 series clutches. 213876:Belt spacer shims are 1/16 thick to adjust pre 88 108C clutches from 1-1/4 to 1-5/16 or 1-3/8 . 214393: Belt spacer shims are 1/16 thick to adjust 88-up 108C, 108EXP and 108 4-PRO clutches from 1-1/4 or 1-5/16 or 1-3/8 .