abi Classic Spreader 25 Owner's Manual page 16

Tightening the Beater Bar Chain (25, 50, 65 cubic foot spreaders)
Tightening the Beater Bar Chain (85 cubic foot spreaders)
First, loosen all four bolts on either side to
make the adjustment (#1). You will then
loosen bolt #2. Then take a wrench and
tighten bolt #3 until you reach the desired
tension. You will want to leave some slack
in the chain (about ¼"). Once the
adjustment is made, tighten bolts #1 and
#2 back down to secure the adjustment.
Over time, the chain that controls the beater bars
may get some slack in it and require adjustment.
To remove this slack, you will need to loosen the
two bolts located on the rear sprocket. There is a
sprocket holder with two bolts on both sides of
the beater bar (total of 4 bolts) that will need to be
loosened. Once the bolts have been loosened,
have a helper gently pull the whole wide spread
beater bar back until most of the slack is taken
out of the chain. Be sure the beater bar is not
sitting at an angle after adjustment. Make sure
both ends have been adjusted out at the same
distance to prevent the beater bar from sitting at
angle, as this may cause damage to the
spreader.
Once the slack is taken out, retighten the 4 bolts
back down. Over tightening the chain may cause
damage to chain, sprockets, or other parts of the
spreader. A small amount of slack in the chain is
acceptable.
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