Flexible shaft lubricant. The flexible inner shaft should be checked, wiped clean, and relubricated with grease every 50 hours of use. With every 200 hours of use, the shaft should be thoroughly cleaned with solvent and lubricated. Instructions for lubrication are detailed in your machine's Owner's Manual which is available in the Download Center located in the right hand column of the website. We also recommend that you watch our maintenance videos which offer step by step help with routine maintenance. 30 mL. MSDS.