Bush-whacker ST-104, Operation Manual

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2010 ST-104
At Least Twice Daily
Rotor Bar Assembly, Blades, Blade Bolts, and Nuts

Make sure rotor bar assembly is securely attached with castle nut and cotter pin to the
output shaft.

Always make sure to replace the blades in sets.
NOTE: When mowing at low cutting heights or on uneven terrain, the blades can come in
contact with the ground frequently. When this happens, the blade tips can be pushed upwards
causing the blade to bend. By pushing upwards on the blade tip, the rear of the blade (at the
bolt hole) is forced downward away from the rotor bar assembly. This causes the bolt to be
pulled through the bar and can cause it to shear. When the bolt shears, it will throw a blade.
When operating in these conditions, the operator must check the blade bolts more frequently
than normal, at least four times a day.
Always use genuine Bush-Whacker replacement blades, bolts, and nuts. Other blades may not
meet Hall Manufacturing specifications and could lead to serious injury or death.
Hydraulics

If at any time the hoses become frayed, worn, or pinched, replace them.
Daily
Shields

Make sure ALL shields are in place and tightened before operating the mower. If one
works loose, stop mowing and tighten immediately.

Replace shields if there’s any damage or excessive wear.
Drive Shafts

Inspect the Drive Shaft Shields, make sure that they are installed and working properly. If
shields become damaged or loose during operation, stop immediately and fix or replace
them.

Make sure the drive shaft shield mounting chains are securely fastened.
 Inspect cross kits

Grease each zerk fitting with natural or synthetic lubricants. Never mix the two types of
lubricants.

Check Drive Shaft tubes to ensure that they telescope properly. If they do not, replace
them.