Cummins/Onan 6GO — Preparation for Operation - Lubrication, Fuel and Radiator
Maintenance · Plant preparation
For the Cummins/Onan 6GO, from the Cummins/Onan operator's manual.
Applies to: Continental Red Seal Y91-273 or Y91-264 engine
Before you start
- Do not use an oil heavier than SAE number 20 in a plant being put into service the first time.
- Always use oil of the same brand when adding oil between changes.
Procedure
- Fill the crankcase with approximately 3 quarts of good quality heavy duty (detergent) type oil to the high level mark on the bayonet gauge.
- Fill the air cleaner cup to the indicated level with oil of the same SAE number as the crankcase.
- Fill the oil cup on the side of the distributor.
- Place a drop of oil on each of the governor to carburetor link ball joints.
- Fill the radiator with clean, alkali-free water; the cooling system capacity is approximately 11 quarts.
- Use only a good grade, clean, fresh, regular automotive type gasoline of 68 to 74 octane rating.
Specs & values
- 3 quarts crankcase oil
- 11 quarts cooling system capacity
Source: Cummins/Onan operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.