Brown Products TrenchMaster (F-704 & F-904) - Manual (Page 14)

STEP #1
Attach the handle to the frame[#9] using 2-1/4” x 1 3/4” bolts. Place the 2 bolts through
the handle Brace Plate[#25], then through the handle[#15]. With the Brace Plate in place
on the handle, align the bolts through the two holes in the frame[#9] and secure each bolt
with a washer and 1/4” lock nut.
STEP #2
Pass the cable clevis through the sheave guard (mounted on the handle brace plate) and
attach to the idler arm with a clevis pin and cotter key. Install the cable sheave in the
sheave guard with a sheave pin (clevis pin) through the upper holes (on top of the cable)
and place another sheave pin through the lower holes under the cable. Secure both
sheave (clevis) pins with cotter keys. Attach the clutch cable spring to the clutch lever.
Adjust the tension on the control cable by shortening or lengthening the turnbuckle
attached to clutch spring. When properly adjusted, the spring should stretch about 3/4” to
1” when the clutch lever is closed. Be sure to tighten the jam nut on the turnbuckle once
the proper tension is set.
STEP #3.
Replace the belt guard cover and secure it with the 3 wing nuts.
STEP #4.
To install the rotor blade, remove the outside nut from the spindle (the inside nut is fixed to
the spindle). When looking under the hood, the rotor turns counter clockwise. Therefore,
place the rotor on the spindle with the points pointed up on the end of the rotor nearest the
handle. Replace the nut, securing the rotor on the spindle. This nut does not need to be
put on extremely tight. Tighten to about 100 foot pounds of torque or hand tighten with the
Rotor Nut Wrench and Handle.
CAUTION!! If using an impact wrench, do not over tighten because it may be very difficult
to loosen the nut to change rotors.
TRENCHMASTER
®
MODELS F-704 & F-904H
ASSEMBLY INSTRUCTIONS
NOTE: The only assembly required is installation of the handle, connecting and adjusting
the cable and installing the digging rotor. Refer to parts drawing on page 7-2.
7-1
CAUTION:
The engine is shipped without oil so oil must be
added before starting engine.