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Kohler D200 7.3A60 / D200 7.3A50 Engine

The Kohler D200 7.3A60 / D200 7.3A50 is a 7.28 L 6-cylinder turbocharged, charge air cooled engine rated at 1800 rpm, producing up to 236 kW. It powers generator sets from Kohler, including the 200REOZV.

Also known as: Kohler D200 7.3A60 / D200 7.3A50

7.28 L

Displacement

Cylinders

1800 rpm

Rated speed

236 kW

Gross power

On this pageSpecs Generator sets Maintenance FAQ Service intervals Torque & specs Fluids Procedures

Engine specifications

Displacement	7.28 L
Cylinders	6
Aspiration	Turbocharged, Charge Air Cooled
Rated speed	1800 rpm
Gross power	236 kW

Generator sets powered by this engine

Kohler 200REOZV

This engine also powers 1 machine(s) on Power Equipment Info.

How to read your Kohler engine serial & model number →

Maintenance schedule

Item	Spec	Capacity	Part #	Interval
Air filter	Kohler OE		—	500 hr
Fuel filter	Kohler OE		—	500 hr
Oil filter	Kohler OE		—	500 hr
Battery	Kohler OE		—	500 hr
Belt	Kohler OE		—	500 hr
Coolant	Kohler OE		—	500 hr
Oil	20-50	7.6 L	—	1000 hr
Spark plug	Kohler OE		—	500 hr

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Service intervals

Item	Action	Hours	Months	Notes
System	Test	1 hr		ToCI quarterly: exercise system under full load for 1 hour
Anticorrosion additive	Other	400 hr		Add an additional 0.5 L anticorrosion agent every 400 engine operating hours
Battery	Test		6 mo	Load-test battery at each semi-annual visit
Coolant	Change		12 mo	Change the coolant and flush the system once a year; check hoses and connections for leaks at the same time
Coolant antifreeze	Change		12 mo	NCCI/RCI: antifreeze change once per year during contract term
Engine tune-up	Other		12 mo	Annual: engine tune-up with parts
Fuel filters	Change		12 mo	Annual: change fuel filters
Generator sets and associated systems	Inspect		6 mo	Semi-annual inspection, testing and preventive maintenance (default unless Appendix A states otherwise)
Load bank	Test		12 mo	Annual four (4) hour load bank test / emergency service operation with four (4) hours full load test once per year
Lube oil	Change		12 mo	CMC/HCF: additional services on second visit - lube, oil and filter change
Lube oil analysis	Test		12 mo	Annual: lube oil analysis
Oil	Change		12 mo	NCCI/RCI: oil shall be changed once every 12 months
Oil filter, fuel filter and air filter	Change		12 mo	NCCI: change once every 12 months during the contract period
Primary and bypass lube filters	Change		12 mo	Annual: change primary and bypass lube filters
Transfer switch	Lubricate		12 mo	ToCI annual: check, clean and lubricate transfer switches and breakers
Valve clearance	Adjust		12 mo	ToCI annual: check valve clearance
Water filters	Change		12 mo	Annual: change water filters

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Service specifications

Type	Item	Value	Unit	Condition
Clearance	Camshaft axial clearance	0.05-0.13	mm
Clearance	Camshaft radial clearance	0.03-0.08	mm
Clearance	Crankshaft axial clearance	0.068-0.268	mm
Clearance	Cylinder liner step height over block plane	0.13-0.18	mm
Clearance	Cylinder liner step height over block plane	0.38-0.43	mm
Clearance	Lubricating oil pump gear axial play	0.07-0.15	mm
Clearance	Lubricating oil pump gear backlash clearance	0.15-0.30	mm
Clearance	Main bearing radial clearance	0.065-0.119	mm
Clearance	Max. axial clearance, idler gear	0.10	mm
Clearance	Max. flank clearance, timing gears	0.05-0.15	mm
Clearance	Max. out-of-round, big end journal	0.08	mm
Clearance	Max. permitted axial runout, flywheel (radius 150 mm)	0.15	mm	installed
Clearance	Max. radial clearance, big end (permitted)	0.05	mm
Clearance	Max. radial clearance, idler gear	0.05	mm
Clearance	Piston height over block plane, max.	0.70	mm
Clearance	Radial clearance, big end	0.087	mm
Clearance	Turbocharger axial play, Holset H1E, H2A	0.10-0.16	mm
Clearance	Turbocharger axial play, Schwitzer S2A, S2B	0.14	mm	max.
Clearance	Turbocharger radial play compressor side, Schwitzer S2A	0.82	mm	max.
Clearance	Turbocharger radial play compressor side, Schwitzer S2B	0.95	mm	max.
Clearance	Valve guide max. play, exhaust valve	0.38	mm	wear tolerance
Clearance	Valve guide max. play, inlet valve	0.33	mm	wear tolerance
Gap	Engine speed pickup to flywheel ring gear distance	0.6-1.0	mm	3/4 turn from bottom position
Gap	Piston ring gap in ring opening	0.30	mm
Gap	Piston ring play change limit	1.5	mm
Injection timing	Injection pump element timing, D200 7.3A50	10 ±0.5	degrees BTDC
Injection timing	Injection pump element timing, D200 7.3A60	9 ±0.5	degrees BTDC
Injection timing	Lift from basic circle (stroke position)	3.55 +0.05	mm
Other	Exercise under full load	1	hour	ToCI quarterly
Other	Fuel injection nozzle hole diameter	6 x 29	mm
Other	Full load test duration	4	hours	Once per year
Other	Load bank data recording interval	15	minutes	During load bank test
Other	Load bank test load level	80	% of generator nameplate capacity	4-hour resistive load bank test
Other	Load bank test profile	2 hours at 50%, 1 hour at 75%, 1 hour at 100%		Annual four (4) hour load bank test
Pressure	Charge pressure, prime power (D200 7.3A50)	165	kPa	full load, 25°C intake air
Pressure	Charge pressure, prime power (D200 7.3A60)	190	kPa	full load, 25°C intake air
Pressure	Compression pressure at start engine speed	2300	kPa	start engine speed
Pressure	Feed pump pressure	150	kPa
Pressure	Injector adjustment pressure, new spring	29.5 +0.8	MPa	new spring
Pressure	Injector opening pressure	29.0	MPa
Pressure	Max. combustion pressure, prime power (D200 7.3A50)	16.0	MPa	prime power
Pressure	Max. combustion pressure, prime power (D200 7.3A60)	16.2	MPa	prime power
Pressure	Max. permitted backpressure in exhaust pipe	10	kPa
Pressure	Oil pressure at idle, min.	150	kPa	idle
Pressure	Oil pressure at operating speed	250-550	kPa	after engine reaches operating temperature
Pressure	Pressure valve in cooler opens at	70	kPa
Resistance	Actuator ACB275 resistance A-B / C-D	3±1	ohms	at 25°C (77°F)
Resistance	Actuator ACD175 resistance G-H	7±1	ohms	at 25°C (77°F)
Speed	Basic setting, 1500 rpm engines, operating speed set to approx.	1567	rpm	no jumper between G and M
Speed	Basic setting, 1800 rpm engines, operating speed set to approx.	1870	rpm
Temperature	Exhaust temperature after turbine wheel, prime power (D200 7.3A50)	540	°C	prime power
Temperature	Exhaust temperature after turbine wheel, prime power (D200 7.3A60)	480	°C	prime power
Temperature	Exhaust temperature after turbine wheel, standby power (without fan) (D200 7.3A50)	485	°C	standby power
Temperature	Exhaust temperature after turbine wheel, standby power (without fan) (D200 7.3A60)	490	°C	standby power
Temperature	Oil temperature, max.	120	°C	max.
Temperature	Oil temperature, normal	110	°C	normal
Temperature	Thermostat fully open	88	°C
Temperature	Thermostat starts opening at	75	°C
Torque	Axial bearing, camshaft	65 ±7	Nm
Torque	Bearing block, rocker arm mechanism	65 ±7	Nm

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Recommended fluids

Fluid	Grade	Standard	Ambient	Capacity	Notes
Coolant	Ethylene glycol and clean, softened water		above -56°C	16.0 L	Engine coolant volume 16 L (4.23 gal.); including std. cooler and hoses 37 L (9.77 gal.). Use at least 40% antifreeze; freezing point to max. -56°C (60% antifreeze). Mixing ratios: -28°C/40%, -40°C/50%, -56°C/60%. Do not mix different brands.
Engine oil	SAE 5W/30	VDS-2, VDS; ACEA E3-96, E2-96; API CF-4, CG-4		29.0 L	Capacity including filter 29 L (7.66 gal.); excluding filter 24 L (6.34 gal.). Only SAE 5W/30 must be used. Difference between MIN-MAX is 8 L (2.11 gal.).
Engine oil	meeting manufacturer's specs				Add crankcase oil (grade meeting manufacturer's specs) to correct level (SCI)
Fuel	Diesel	EN590; ASTM-D975 No 1-D and 2-D; JIS KK 2204			Sulfur content according to relevant national statutory requirement.

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Procedures

Adjusting Drive Belts adjustment

Change belts that are saturated with oil, worn, or damaged.
Change belts working in pairs simultaneously.
Stretch the generator belts after loosening the alternator.
Set belts so they can be depressed approximately 10 mm (0.4 in.) midway between the belt pulleys.
Note the engine has an automatic belt tensioner for the fan belts.

Adjusting Valves adjustment

⚠ Do not adjust the valves while the engine is running as the pistons may strike the valve disks.

⚠ Perform valve adjustment on a stationary, cold engine.

Tools: 9993590

Remove the valve covers.
Install rotation tool 9993590.
Turn the engine in the direction of rotation until piston 1 is at TDC after the compression stroke (0° on the flywheel).
Adjust valves 1, 2, 3, 6, 7, and 10.
Turn the engine one turn until piston 6 is at TDC after the compression stroke.
Adjust valves 4, 5, 8, 9, 11, and 12.
Change valve cover gaskets if necessary and reattach the valve covers.
Remove the rotation tool.

Setting Injection Pump Timing adjustment

⚠ Never turn the flywheel against direction of rotation for fine adjustment; if turned too far, restart the process.

Tools: 9987057, 9993590

Remove the front valve cover.
Turn the flywheel in the direction of engine rotation until cylinder no. 1 is at its compression position (0° on flywheel).
Rotate the flywheel against direction of rotation approximately 1/4 turn, then in the direction of rotation to the correct setting angle.
Remove the pump coupling clamp bolt and turn the pump coupling approximately 1/4 turn in the direction of pump rotation.
Remove the plug in the governor housing and attach the measuring tool sensor.
Tighten the pump coupling clamp bolt so the coupling can be turned against rotation with considerable resistance.
Carefully turn the pump coupling against direction of rotation until both LEDs illuminate.
Torque the pump coupling clamp screw to 90 ±9 Nm (66 ±7 ft. lb.).
Remove the measuring instrument sensor and reinstall the plug; top off engine oil.

Checking Thermostat Function diagnostic

Make sure the thermostat is completely closed (no gap visible in the opening).
Heat water in a receptacle to 70°C (158°F) and immerse the thermostat.
Check that the thermostat is still closed after at least 30 seconds.
Heat the water to boiling point, 100°C (212°F).
After at least 30 seconds, check that the thermostat has opened a minimum of 7 mm (0.28 in.).
Replace the thermostat if it does not open.

Testing Compression (Injectors Removed) diagnostic

Tools: 9998009, 9988539

Install adapter 9998009 with the injector attachment bracket and nut.
Connect compression tester 9988539 and perform a compression test.

Automatic Transfer Switch Semi-Annual Service maintenance

Verify proper operation of exerciser clock; adjust if necessary.
Provide visual inspection of all contacts and connection points.
Perform building load test if practical and inspect for proper transfer and re-transfer.
Verify operation of all control lamps.

Battery and Battery Charger System Semi-Annual Service maintenance

Clean all battery terminals; verify integrity of cables and connectors.
Load-test battery.
Measure specific gravity of each battery cell.
Inspect electrolyte level and add fluid if necessary.
Verify proper operation and float voltage of external battery charger.
Verify and record output of engine alternator.

Bleeding Fuel System maintenance

Open the bleeder nipple on the fuel filter holder.
Pump fuel using the feed pump hand pump until the fuel is free from air bubbles.
Tighten the bleed screw while fuel is running out; keep pumping to attain a good feed pressure.
If necessary, loosen the union for the overflow valve and pump until fuel emerges without air bubbles.
Retighten the union while fuel is still running out.

Changing Coolant Pump maintenance

Disconnect the pipe, if equipped, from the thermostat housing front cover and remove the cover retaining bolts.
Detach the pipe from the coolant pump.
Remove retaining bolts and lift the coolant pump out.
Remove the thermostat housing cover from the coolant pump and remove the pipe between cover and pump.
Clean all sealing surfaces.
Install new sealing rings on the pipe between the thermostat housing cover and the coolant pump.
Install new sealing rings for the coolant pump seal to the timing gear casing and cylinder head.
Install a new sealing ring on the thermostat housing cover, place the coolant pump, install and tighten the bolts.
Install the thermostat housing cover.
Attach the pipe onto the thermostat housing front cover and install the pipe on the coolant pump using new sealing rings.
Fill with coolant and check for leaks.

Changing Fuel Filter maintenance

Tools: 9999179

Clean the filter bracket thoroughly.
Remove the fuel filter using tool 9999179.
Moisten seals on the new filters with oil and screw them in by hand until the seals contact the attachment.
Tighten the filter another half a turn.
Bleed the fuel system.
Start the engine and check for leaks around the filters.

Changing Oil Filter maintenance

Tools: 9999179

Place a receptacle beneath the filter.
Clean the filter attachment and remove the filter using tool 9999179.
Moisten the seals on the new filter with oil and screw in by hand until the seals contact the attachment.
Tighten the filter by hand another half a turn.
Fill with engine oil and rotate the engine with the starter motor until oil pressure is indicated.
Start the engine and check for oil leaks around the filter.

Controls Semi-Annual Service maintenance

Verify and record output voltage and adjust voltage regulator, if necessary.
Calibrate control meters.
Verify and record output frequency and adjust governor, if necessary.
Verify operation of all control panel lamps.
Inspect for any loose connections, terminals or discoloration.

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Common questions

What is the displacement of the Kohler D200 7.3A60 / D200 7.3A50?

The Kohler D200 7.3A60 / D200 7.3A50 has a displacement of 7.28 liters with 6 cylinders.

Which generators use the Kohler D200 7.3A60 / D200 7.3A50 engine?

The Kohler D200 7.3A60 / D200 7.3A50 powers 1 generator set(s), including Kohler 200REOZV.

How often should you change the oil in the Kohler D200 7.3A60 / D200 7.3A50?

The Kohler D200 7.3A60 / D200 7.3A50 oil change interval is every 1000 hours.