The manual warns: Do not crank the engine more than 10 seconds without bleeding. It describes the manual primer pump procedure and the exact bleed sequence on the filter head.
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Check the official Cummins Quickserve Online portal (offers a rolling annual subscription for digital access) or authorized diesel literature vendors. Ensure the part number matches your specific ISF variant (e.g., ISF 2.8s, ISF 2.8c, ISF 2.8t). The manual warns: Do not crank the engine