RG165T-R Operator · Service · Maintenance
800.392.2686
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Maintenance
• Replace the filter cartridges every 400 hours, or more
often when running machine in dusty or dirty conditions.
• To release the cover (5) pull outward on the yellow
retaining clip (4) and rotate the cover counterclockwise
and pull outward.
• Discharge the dust ejector valve and be sure any dirt or
debris are cleaned out of the filter housing before the
are cleaners are removed.
• Reinstall filters
Note: Do not attempt to clean filters due to risk of damaging
filters and allowing dirt into the engine.
Battery - Check
Adjust Electrolyte Level
The battery is located in the left rear of the engine
compartment (7).
1. Remove each cap carefully by prying with a screwdriver.
2. Electrolyte level should be 1/4” to 1/2” above metal
plates (just touching bottom of plastic fill neck). Add
distilled water as needed.
3. Replace both caps.
Clean Terminals
1. Remove the black negative (-) cable.
2. Clean the terminal and clamp of any oxidation buildup
with a stiff wire brush. (Stroke the brush away from your
body to avoid hazardous particles.)
3. Apply a light coat of petroleum jelly around the base of
the terminal.
4. Replace the cable.
5. Repeat the same procedure for the red positive (+)
cable.
Cutting Wheel & Teeth
Among the most critical elements of the stump cutter are the
cutting teeth. They are also the most subject to damage and
wear, as in the course of cutting stumps they may encounter
a numerous assortment of abra sives and objects in the
stump’s environment, such as dirt, stones, and occasionally a
large rock or buried scrap. The loss of and wear of teeth can
sig nifi cant ly impair the efficiency of a stump cutter and also
result in overexposure of other teeth, resulting in premature
failure or wear. There fore it is important to make frequent
observation of the con di tion of all of the cutting teeth, and
replace any missing and sig nifi cant ly worn teeth, as soon
as feasible. Read all of the instructions which follow before
changing cutting teeth.
Rayco Teeth
Rayco Manufacturing Inc. recommends only genuine Rayco
Cutting Tools for use on Rayco Stump Cutters and Forestry
Mowers. The use of non-Rayco cutting tools or cutting
wheels will void the machine warranty. Rayco’s cutting tools,
cutting wheels, and mower rotors are specifically designed
to provide optimum performance in many ways. The use of
non-Rayco parts will compromise this optimum performance.
• Safety: Rayco’s cutting tools are always attached with at
least two fasteners. This redundant fastening system is
far safer than those systems employing only one fastener.
Rayco’s cutting tools are also more visible than some of
the other cutting tools that are available. Some of the
cutting wheels available today are “transparent” which
can lead to an operator or bystander becoming confused
as to the actual limits of the cutter tool.
• Proper Balance: Rayco’s cutting wheels and mower
rotors are designed to achieve a dynamic balance that
avoids vibration. Using other cutting tools can set
up vibrations that will harm the machine’s structure &
reduce bearing life.
• Number of Teeth for Depth of Cut: Rayco’s cutter wheels
are designed to provide an economical cutting wheel
assembly solution. The teeth are spaced to provide a
maximum depth of cut for the number of teeth on the
wheel. Some of the wheels available today use a large
quantity of teeth to get the same depth of cut that a
Rayco wheel will achieve with half the teeth. While the
individual tooth cost may be less, the overall costs are
more. Additionally, having too many teeth in the stump
at any one time can lead to aggressive “grabbing” of the
stump, causing the stump cutter to violently hop. This
can cause injury to both man & machine.
• Tooth Projection: Rayco’s stump cutter teeth are
specifically designed to ensure that the carbide tip can
remove a clear “kerf” from the stump without the body
of the tooth ever contacting the stump. This concept
reduces drag, which maximizes the use of the machine’s
horsepower. This also reduces wear on the tooth body
and on the attachment hardware. Many of the other
cutting tool systems available today do not address this
important aspect of cutting.
• Cutting Tool Dimensions: Rayco’s stump cutting teeth
are carefully designed to have the proper size of carbide
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