The bearings in the exciter assembly are splash lubricated and rotate at a very high speed (up to 5400 rpm). It is important to maintain the exciter oil at the proper level and change it regularly to ensure maximum protection.

To drain oil, remove drain plug and tip machine toward drain hole. Use a suction gun to draw oil out of the exciter case. When filling, position plate on a level surface and add oil through drain plug hole until oil is even with bottom edge of threads (a). Caution: DO NOT overfill exciter case. Excessive wear on engine and exciter bearings will result.

Author: David Schatz

David Schatz is the founder of DHS Equipment and a technical content expert in light construction equipment, small engines, and professional-grade replacement parts. With more than 30 years of hands-on experience servicing concrete saws, generators, water pumps, and plate compactors, he helps contractors, rental fleets, and serious DIY users keep their equipment running safely and efficiently.

Through practical, no-nonsense articles, step-by-step guides, and maintenance tips, David focuses on real-world troubleshooting, small engine repair, and clear recommendations on OEM and high-quality aftermarket replacement components that reduce downtime, extend equipment life, and improve job site productivity.