Westerbeke 12.5 BTDA - Every 250 Operating Hours or Yearly Maintenance; Every 500 Operating Hours or Five Years Maintenance; Every 1000 Operating Hours or Five Years Maintenance

MAINTENANCE SCHEDULE
NOTE: Use the engine hourmeter gauge to log your engine hours or record your engune hours running time.
SCHEDULED MAINTENANCE
I EVERY 250 OPERATING HOURS OR YEARLY
Exhaust Elbow/Exhaust Svstem
Fuel Filler and O·Rings
*Otlnerator
Ho&e&
Fuel Water Separator Filter
DC Alternator
Impeller
I EVERY 500 OPERATING HOURS OR FIVE YEARS
Raw Water Pump
COolant System
*Valve Clearances/Cylinder Head( cold)
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• :ltarter Motor
Fuel InJectors
EXPLANATION OF SCHEDULED MAINTENANCE
Check the structural integrity of the water injectecl ~xhaust elbow casting. Check
of the exhaust system attached to the elbow. All hose connections should be
chaffing. No exhaust leaks. Hoses and muffler are in good serviceable condition.
NOTE: An exhaust leak will cause exposure to diesel exhaust!
Remove and replace fuel filter and all sealing 0-rings.
Check that AC connections are clean and secure. Ensure wires have no chafing.
See GENERATOR INFORMATION.
Engine hoses should be firm and tight. Replace if hoses become spongy, brittle or
delaminated. Check and tighten all hose clamps as neeoed.
Inspect bowl for dirt or water in fuel. Drain and replace filter.
Inspect wiring, connections should be tight. Alternator should be clean and free of corrosion.
Check mounting bracket and alternator bolt. All should be tight
Remove impeller from raw water pump. Inspect impellers condition. Replace as needed.
Remove and disassemble the pump and inspect all parts: drive gear, pump shaft, wear plate
and cover for wear and corrosion. Replace the impeller and gasket. Lubricate the impeller
at re-assembly.
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Drain, flush and re-fill the cooling system with appropriate antifree4e mix. Inspect the
condition of the sealing gaskets of the pressure cap. Clean out coolant recovery tank
and connecting hose.
Torque head bolts then adjust valves.
Check solenoid and motor for corrosion. Remove and lubricate. Clean and lubricate the
starter motor pinion drive.
Check and adjust injection opening pressure and spray conditions.
I EVERY 1000 OPERATING HOURS OR OR EVERY FIVE YEARS
Heat Exchanger
Remove the heat exchanger for professional cleaning and pressure testing.
Glow Plug:;
Check circuit. Remove, clean, check resistance.
*WESTERBEKE recommends this service be performed by an knowledgeable mechanic.
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