9640 003 1600 OIL SEAL WZXT72S61G8E1B the gearbox input belt plays

the gearbox input belt plays a critical role in maintaining smooth engagement and efficient operation

Inspect blade every 25 operating hoursSharpen evenly to maintain proper balanceReplace blade if bent

improved heat dissipation

preventing overheating

90555-VB3-801 Seal

9640 003 1600 OIL SEAL WZXT72S61G8E1B the gearbox input belt plays9640 003 1600 STIHL Oil Seal (Genuine OEM Part) The STIHL 9640 003 1600 Oil Seal is a genuine OEM sealing component designed to maintain proper engine lubrication and protect internal rotating assemblies in STIHL outdoor power equipment. This precision engineered oil seal helps prevent oil leakage while keeping dirt, debris, dust, and moisture from entering critical engine components. Manufactured to STIHLs exact factory specifications, the 9640 003