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BROWN 800 Series Brush Cutter
BLADE BAR INSTALLATION
NOTE: Prior to blade bar installation, ensure that the output shaft and the hub are clean and dry.
Apply anti-seize compound to the hub or shaft.
Step 1 - Remove or secure hydraulic lines so the cutter can be turned upside down.
Step 2 - Using a suitable lift, turn the cutter upside down, being careful not to damage the bearing
housing. The cutter should rest on the front and rear headers, use blocking if necessary.
Step 3 - Be sure that the output shaft is clean, coat splines with copper anti-seize. Be sure the splines
of the hub in the blade bar are clean and dry.
Step 4 - Carefully take the blade bar and position it over the tapered splined output shaft making sure
the splines are aligned. The bar should go down approximately 2 3/4” on the shaft. The hub
should remain ABOVE the end of the shaft approximately 0.25 inches.
Step 5 - Install the nut on the output shaft and tighten to approximately 300 ft lb with a 2” 6 point
socket.
Step 6 - Take an 8 to 12 lb. sledge hammer and hit the bottom of the blade bar several times,
approximately 6 inches from the hub, in a circular pattern around the hub.
Step 7 - Tighten the bar again to approximately 300 ft lb.
Step 8 - Repeat Step 6, hitting the bar with hammer.
Step 9 Retighten the nut to approximately 600 ft lb torque. Remove the wrench from the nut and
check the location of the cotter pin slot and the hole in the shaft. If the hole and slot are not
aligned, continue tightening the nut until the hole and slot are aligned and insert the
cotter pin. If after tightening the nut to a maximum if 600 ft lb of torque the hole and slot
are still not aligned, install a different nut and repeat the tightening procedure. NEVER
loosen the nut to align for cotter pin installation.
Blade Bar Installation Procedure
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