Multiquip 12875 Gear Box Cover JA - OEM Replacement Part for Walk-Behind Trowels

The gear box cover protects the helical worm gear drive gearbox on JA-series and compatible walk-behind power trowels, sealing the gearbox housing that holds 28 oz. of Chevron Cetus HiPerSYN 460 synthetic oil. This cover maintains proper sealing of the gearbox assembly, which provides rotation of blades via engine interface and features integrated cooling fins for maximum oil cooling. Regular inspection of the gearbox cover ensures the oil level sight glass remains visible and functional, allowing operators to verify proper lubrication prior to each use as specified in Multiquip maintenance procedures.

The gearbox cover sealing surface must be kept clean during routine maintenance intervals when checking or changing gear oil. A properly sealed cover prevents oil leakage and contamination, protecting the hardened steel worm gear and composite components inside. Failure symptoms of a damaged cover include visible oil leaks, reduced gearbox performance, or difficulty maintaining proper oil levels between service intervals.

Compatible with the following Multiquip walk-behind power trowel models:

• B46
• BH90C
• CA4HC
• CA4HM
• J3036H55
• J36
• JH55C
• JTNS20-SW20
• PRO36

Genuine Multiquip OEM part, sold by an authorized dealer.