WARNING
Tools Required – 7/16 inch Open End Wrench, Tape Measure
Tension of belt or chain is adjusted by tightening hex head bolt on underside of rail support at header
end of rail. Turning bolt to the right (as you face the bolt head) tightens the belt/chain.
DO NOT ATTEMPT TO INCREASE TENSION OF BELT/CHAIN UNTIL OPENER IS FASTENED TO RAIL.
BELT/CHAIN TENSION MUST BE REDUCED BEFORE REMOVING OPENER FROM RAIL
Tighten hex bolt until distance from bottom of rail to bottom of chain is 3/4 inches or to bottom of belt
is 5/8 inches.
Take measurement at point where rail attaches to rail support as shown in the illustration below.
2
Setting Belt/Chain Tension
Hex Head Bolt
Rail Underside ( Header End)
8
Tension Measure Location - Chain
Tension Measure Location - Belt