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Hyundai CM4.65 Engine

The Hyundai CM4.65 is a 2.61 L natural engine rated at 3000 rpm, producing up to 48 kW. It powers generator sets from Craftsman Marine. It holds 260 L (68.7 gal) of coolant.

Also known as: Hyundai CM4.65

2.607 L
Displacement
3000 rpm
Rated speed
48 kW
Gross power
On this pageSpecsGenerator setsMaintenanceFAQ

Engine specifications

Coolant capacity260.0 L
Displacement2.607 L
AspirationNatural
Rated speed3000 rpm
Gross power48 kW

Generator sets powered by this engine

1
Craftsman Marine CM4.65

Common problems

15
  • Leak in fuel supply or fuel injection line(s)
    Fix: Check and replace, if necessary
  • Fuel filter clogged up by water or dirt
    Fix: Check / clean or replace
  • Fuel cock closed
    Fix: Open the fuel cock
  • Filter of electrical fuel lift pump is clogged up
    Fix: Check and replace, if necessary
  • Excessive fuel consumption of engine
    Fix: Check fuel quality. Drain fuel tank and rinse it well. Fill with good quality fuel, Check and replace if necessary, Check / adjust, Check compression, overhaul engine if necessary, Check the air intake and the ventilation openings in the engine room
  • Engine oil consumption excessive
    Fix: Check / adjust alignment of engine, Check / replace
  • Engine has little or no oil pressure
    Fix: Check / clean, Check / replace if necessary, Lower oil level, Top up, Replace, Repair / replace, Check / adjust alignment, Replace by good quality engine lubricating oil
  • Engine becomes overheated
    Fix: Check / top up, Check and open, Check / clean, Check / tighten / replace, Check / replace, Check / replace, Check / replace
  • Empty fuel tank
    Fix: Fill the fuel tank
  • Electrical fuel lift pump defective
    Fix: Check and replace, if necessary
  • Dirt in press or suction valves of the electric fuel lift pump
    Fix: Check / clean
  • Defective injector / injection pump
    Fix: Check and replace, if necessary
  • Clogging in exhaust line
    Fix: Check / remove blockage
  • Breather line of fuel tank clogged up
    Fix: Check and clean or replace
  • Blue smoke coming out of the exhaust (when idling)
    Fix: Lower oil level, Check / adjust alignment of engine, Check / replace

Compiled from service & troubleshooting documentation across every generator set that uses the Hyundai CM4.65.

Maintenance schedule

ItemSpecCapacityPart #Interval
Air filter—
Fuel filter—100 hr
Oil filter—100 hr
Battery—365 hr
Beltreplace by good quality lubricating oil—
Coolant40% ethylene-glycol, 60% clean tap water9.0 liters—
Coolant filter—100 hr
Oil5.4 liters—100 hr
Spark plugcheck and replace if necessary—

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

Common questions

What is the displacement of the Hyundai CM4.65?

The Hyundai CM4.65 has a displacement of 2.607 liters.

Which generators use the Hyundai CM4.65 engine?

The Hyundai CM4.65 powers 1 generator set(s), including Craftsman Marine CM4.65.

How often should you change the oil in the Hyundai CM4.65?

The Hyundai CM4.65 oil change interval is every 100 hours.

What is a common problem with the Hyundai CM4.65 engine?

A commonly reported issue on generators using the Hyundai CM4.65 is: Leak in fuel supply or fuel injection line(s). Fix: Check and replace, if necessary.