1990 Johnson Evinrude "ES" Colt/Junior thru 8 Service Manual, P/N 507870, Page 114Get this manual
Ignition Plate ServicingUltra 4, Excel 4 Removal
1To avoid accidental starting of engine while servicing, twist and remove spark plug leads
2Remove the manual starter as described in Section 73Remove flywheelRefer to Flywheel Servicing
L!J the ignition plate from the powerhead
f1l 4Loosen screws attaching ignition plate to retainer plateLift
5The retainer plate and support plate may be removed for service by removing screws from support plateInstallation
crankcasePosition support plate on crankcaseApply OMC Nut Lock to threads of retaining screwsLoosely install the screws