What are the recommended spare parts I should keep on hand for the Big Blue 400 Pro?
Recommended spare parts vary by engine type but include oil filters, fuel filters, and alternator belts for all engine variants. For Kubota models, the air cleaner element (part 197676) and a complete filter kit (part 253901) are also recommended. Mitsubishi and CAT models have their own respective filter kits (252782 and 274427).
From the official Miller Big Blue 400 Pro Welding Machine manual, page 7
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