Milwaukee-eight equipped vehicles - loss of power or high engine braking

Bulletin number

M1450

Component

Engine

Summary

SERVICE BULLETIN M1450: MILWAUKEE-EIGHT EQUIPPED VEHICLES - LOSS OF POWER OR HIGH ENGINE BRAKING. REVISION. Purpose: 2017 - 2019 model motorcycles equipped with a Milwaukee-Eight? engine can experience a condition known as sumping during extended periods at high rpm or under heavy engine load. Sumping is when an excessive amount of oil is suspended in the engine crankcase and the flywheel must travel through the oil, resulting in loss of power or a high degree of engine braking and potential engine component damage with extended use under these conditions. This bulletin provides the diagnostic procedure for determining if sumping is occurring.

Owners of these vehicles have filed 10 complaints in the engine category.