The Generac MDG150 is a 145 kW (181 kVA) Diesel standby generator set powered by a John Deere 6068HFG05 engine. It is available at 120/208 V, 277/480 V and 120/240 V, 3-phase, 60 Hz and rated 218 A. It holds about 32.5 L (8.6 gal) of oil and 63.2 L (16.7 gal) of coolant, with a maximum ambient rating of 49 °C. Starting uses 2 group-31 batteries rated 1000 CCA at 12 V. The set measures 5300×2200×2600 mm (208.7×86.6×102.4 in), weighs about 3978 kg (8770 lb) and produces 75 dBA at 7 m. An integrated tank holds 1355 L (358.0 gal), roughly 39 hours of runtime. The same 6068HFG05 engine also powers generator sets from Hipower.
Compatible filters for the John Deere 6068HFG05 — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.
Air filter: John Deere AR79680 John Deere 4S00686R John Deere AH115833 John Deere RE181915 John Deere F434389J
Oil filter: John Deere RE519987 John Deere RE555072 John Deere DZ118286 John Deere AR58956 John Deere TCA10018
Troubleshooting
4
Symptom
Cause
Remedy
Low Load indicator LED is illuminated.
Resolve by increasing electrical load. If unable to operate genset at more than 30% load, use a smaller generator.
Lug Door Open indicator LED is illuminated.
Resolve by closing lug-box door. If condition remains unresolved, inspect lug-box door safety switch for proper operation.
Emergency Stop indicator LED is illuminated.
Resolve by deactivating (pulling out) Emergency Stop switch.
Shutdown indicator LED is illuminated.
Resolve by resolving shutdown condition.
Symptom → cause → remedy extracted from this model’s service/owner documentation; verify against the official manual before servicing.
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.