Specifications
| Fuel | Diesel |
|---|---|
| Emissions | 4 Final |
| Controller | LOFA |
| Oil capacity | 7.1 L |
| Voltage options | 12 V |
| Battery group | 24 |
| Battery cranking | 720 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
| Coolant capacity | 2.1 L |
Engine
| Oil capacity | 6.3 L |
|---|---|
| Coolant capacity | 2.1 L |
| Displacement | 1.6 L |
| Aspiration | Naturally aspirated |
| Rated speed | 1800 rpm |
Same engine, other brands
1 brandThe Isuzu 3CE1 in this set also powers 3 generator sets sold under 1 other brand. Service parts and maintenance intervals for the engine are shared; enclosure, alternator, controller and ratings are not.
| Brand | Models |
|---|---|
| Isuzu | 3CE1, 3CE1BDZP, 3CE1BDZP1 |
Maintenance & consumables
for the Isuzu 3CE1| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | 1000 hr | |||
| Oil filter | Spin-on | — | 500 hr | ||
| Battery | Inspect the engine battery monthly. At this time, the battery fluid level should be checked using a load tester and distilled water added if needed. Battery cables and connections should also be inspected for cleanliness and corrosion. | — | 2160 hr | ||
| Belt | — | 2000 hr | |||
| Coolant | 5.2 | — | 1000 hr | ||
| Coolant filter | Coolant Drain Plug | — | |||
| Oil | Spin-on | 7.0 | — | 1200 hr | |
| Spark plug | — | 3000 hr |
Common questions
Which engine powers the Generac MIH1.2?
The Generac MIH1.2 is powered by the Isuzu 3CE1 engine.
What kind of fuel does the Generac MIH1.2 run on?
The Generac MIH1.2 runs on Diesel.
What is the oil capacity of the Generac MIH1.2?
The Isuzu 3CE1 engine in the Generac MIH1.2 has an oil capacity of 6.3 liters.
What is the coolant capacity of the Generac MIH1.2?
The Generac MIH1.2 cooling system holds 2.1 liters (0.6 US gallons) for the radiator system including the engine, per the manufacturer specification sheet.
What voltages is the Generac MIH1.2 available in?
The Generac MIH1.2 is offered in 12 V.
What size battery does the Generac MIH1.2 need?
The Generac MIH1.2 uses 1 battery, 12 V each, 720 CCA, group 24, per the manufacturer specification sheet.
Troubleshooting
6Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Engine does not crank | Low battery output voltage or discharged battery. Loose or corroded connections. Faulty start circuit relay. Blown fuse. Faulty main switch or start safety switch. Faulty starter solenoid. Faulty starter. | Charge or replace batteries. See Battery Inspection. Clean and tighten connections. Contact a GMASD. Replace fuse. Repair switch as required. Replace solenoid. Replace starter. |
| Starter cranks slowly | Low battery output voltage or discharged battery. Excessive crankcase oil viscosity. | Charge or replace batteries. See Battery Inspection. Drain crankcase oil and replace with correct viscosity oil. See Draining and Refilling the Oil. |
| Hard to start, or does not start | Engine starting under load. Incorrect starting procedure. Restricted exhaust. No fuel. Air in fuel line. Poor fuel quality. Water, dirt, or air in fuel system. Fuel filter restricted or full of water. Dirty or faulty fuel injectors. Electronic fuel system failure. Cold weather. | Disengage PTO. Review starting procedure. See Pre-start Checklist and Engine and Heater Startup. Inspect and correct exhaust restriction. Check fuel tank. Purge fuel lines. See engine manual. Drain fuel and replace with proper grade and quality of fuel for operating condition. Drain, flush, fill, and purge fuel system. Replace fuel filter or drain water from fuel filter. Contact a GMASD. Use cold weather starting aids (see engine manual). |
| Engine misfiring or runs irregularly | Poor fuel quality; incorrect fuel/dirty fuel. Restricted fuel filter. Water, dirt, or air in fuel system. | Test fuel, drain water from fuel bowl. Replace fuel filter element. Drain, flush, fill, and purge fuel system. |
| Lack of engine power | Restricted air intake. Restricted exhaust. Poor fuel quality. Restricted fuel filter. Engine overloaded. Incorrect crankcase oil. Low coolant temperature. Incorrect valve clearance. Dirty or faulty fuel injectors. Air leak in engine intake or exhaust manifold. | Service air cleaner. Check and correct exhaust restriction. Drain fuel and replace with proper grade and quality of fuel for operating condition. Replace fuel filter elements. Reduce engine load. Drain crankcase oil and replace with correct viscosity oil. See Draining and Refilling the Oil. Remove and check thermostat. Adjust valve clearance or contact a GMASD. Check intake and exhaust manifold gaskets and manifolds; repair as required or contact a GMASD. |
| Engine idles poorly | Poor fuel quality. Electronic control system problem or basic engine problem. | Drain fuel and replace with proper grade and quality of fuel for operating condition. Contact a GMASD. |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Generac MIH1.2 troubleshooting guide (42 entries) →
Parts
35| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 02471 | Warning—Hot Surface | Warning | Amazon eBay | |
| 02472 | Operating Instructions | Operating instructions | Amazon eBay | |
| 10000027574 | Ultra Low Sulfur Fuel Only | 1 | Fuel type | Amazon eBay |
| 041021 | 10-24 X 1/2 RHMS | 16 | Service part / kit | Amazon eBay |
| 041026 | 10-24 X 3/4 SL-FHMS | 7 | Service part / kit | Amazon eBay |
| 044019 | 10-24 NYLOCK NUT | 23 | Service part / kit | Amazon eBay |
| 044021 | 1/4-20 KEPS NUT | 45 | Service part / kit | Amazon eBay |
| 044038 | 3/8-16 NYLOCK NUT | 4 | Service part / kit | Amazon eBay |
| 046115 | 3/8-16 X 1 1/4 HHCS | 4 | Service part / kit | Amazon eBay |
| 047016 | 3/8 SAE FLAT WASHER | 16 | Service part / kit | Amazon eBay |
| 053005 | 1/4-20 X 1/2 RHSSNBOLT | .5 | Service part / kit | Amazon eBay |
| 053006 | 1/4-20 X 3/4 RHSSN BOLT | 28 | Service part / kit | Amazon eBay |
| 090023 | SAFETY WARNING DECAL | Service part / kit | Amazon eBay | |
| 090042 | SAFETY WARNING DECAL | Service part / kit | Amazon eBay | |
| 09007 | SAFETY WARNING DECAL | Service part / kit | Amazon eBay | |
| 090108 | SAFETY WARNING DECAL | Service part / kit | Amazon eBay | |
| 090120 | SAFETY WARNING DECAL | Service part / kit | Amazon eBay | |
| 090122 | SAFETY WARNING DECAL | Service part / kit | Amazon eBay | |
| 090133 | SAFETY WARNING DECAL | Service part / kit | Amazon eBay | |
| 090143 | SAFETY WARNING DECAL | Service part / kit | Amazon eBay | |
| 090147 | Right Frame Rail above Directional Pedal | 1 | Service part / kit | Amazon eBay |
| 090163 | SAFETY WARNING DECAL | 1 | Service part / kit | Amazon eBay |
| 090179 | DECAL - PROPOSITION 65, DIESEL | 1 | Service part / kit | Amazon eBay |
| 090304 | SAFETY WARNING DECAL | Service part / kit | Amazon eBay | |
| 660170 | DOOR HOLDER | 2 | Service part / kit | Amazon eBay |
| 830232 | HASP | 1 | Service part / kit | Amazon eBay |
| 848120 | DUCT STORAGE BOX COMPLETE | 1 | Service part / kit | Amazon eBay |
| 848121 | PNL BOTTOM | 1 | Service part / kit | Amazon eBay |
| 848122 | PNL FRONT | 1 | Service part / kit | Amazon eBay |
| 848123P | PNL SIDE RT | 1 | Service part / kit | Amazon eBay |
| 848124P | PNL SDE LF | 1 | Service part / kit | Amazon eBay |
| 848125P | PNL TOP | 1 | Service part / kit | Amazon eBay |
| 848128P | LID WELDED | 1 | Service part / kit | Amazon eBay |
| 848129 | HINGE | 1 | Service part / kit | Amazon eBay |
| 848954 | MOUNT PLATE | 1 | Service part / kit | Amazon eBay |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Available documents
Owner's manual — A0000244062 (Generac)
This page was generated from the 1 manufacturer document above by automated extraction; every figure shown is copied from one of them. How the data is compiled.