1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 89Get this manual
CHARGING AND STARTING SYSTEM
2Apply drop of SAE 10W oil to to helix threads on armature shaftDO NOT over lubricate3Apply drop of SAE 10W oil to bushings in drive end cap and lower end capDO NOT over lubricate4Reinstall components on armature shaftUse new locknut and tighten securely
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- Helix threadsLocknutSpacerSpringDrive assemblyDrive end capArmature shaftHelix threadsWasher