Just another Moderator
Join Date: Sep 2005
Location: New Westminster, BC
Thanked 357 Times in 337 Posts
Rep Power: 10
The actual noise you're hearing is the bendix gear not fully extending therefore not properly engaging the flywheel (because the solenoid mentioned above isn't traveling fully). Without the load of the engine the starter motor spins very rapidly, so the gear will chatter against the flywheel teeth doing neither of them any favours.
Fixing this sooner rather than later will prevent undue wear on those parts.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)