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HOLT HGW13 Stump Grinder
Operator’s Manual
7. Routine Maintenance
7.1 Maintenance Intervals
Item
Daily
Before
Use
Every
4
Hours
Every
30
Hours
Weekly
Every
100
Hours
Verify emergency stop is functioning properly.
●
With engine stopped, verify throttle is fully open when safety bar is pulled tight
against handle.
●
Check cutting teeth for wear. Rotate or replace cutting teeth as necessary.
●
Check engine air filter. Clean or replace as necessary.
●
Lubricate pivot point grease fittings.
●
Lubricate rotor bearings
●
Check rotor bearings for side-to-side and up/down movement. Replace
bearings if movement is found.
●
Check drive belt condition and tension.
●
Change engine air filter.
●
Change engine oil.
●
^
WARNING
Moving parts can crush and cut.
Keep clear of moving components.
Stop engine before performing
inspections or maintenance.
^
WARNING
Prevent serious injury or death.
Wear proper protective equipment
appropriate for the job.
7.2 Inspections
Inspect the unit for worn or damaged parts. Repair or replace
parts as needed.
7.3 Throttle Inspection
With engine stopped, pull safety bar tight against handle and
verify throttle (A) is against stop (B). If throttle is not against
st
op, loosen clamp screw (C) and adjust throttle cable case as
necessary. Tighten screw (C) and re-check. Throttle (A) must
be against stop (B) and when safety bar is tight against handle.
Engine must be running at operating speed (3600 rpm) when
grinding a stump.
