Service - 72 ST37x Operator’s Manual
Startup/10 Hour
Check Engine Air Filter Service
Indicator
Check air filter service indicator (1) and dust
ejector (2) at startup and every 10 hours and
change filter as needed.
Check Hydraulic Fluid Level
Check hydraulic fluid level at startup and every 10
hours. Maintain fluid level at halfway point on
sight glass (2), when engine is off, cylinders are
fully retracted, and fluid is cool. If low, add THF at
fill (1).
Check Brake Operation
Check brake operation at startup and every 10
hours or more often when conditions warrant..
• Ensure parking brake pin (shown) moves
freely allowing brake to be engaged and
disengaged.
• Clean mud and debris from area around pin.
IMPORTANT: Engine must be running to
check brake operation.
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