1978 Evinrude 25/35 HP Service and Repair Manual P/N 5395, Page 81Get this manual

1978 Evinrude 25/35 HP Service and Repair Manual P/N 5395, Page 81

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Remove thirteen screws and cylinder head coverRemove and discard gasketRemove thermostat and seal Discard seal See Figure 5-
1 Gasket 2 By-pass cover 3 Intake ports
Figure 5-31ntake By-pas