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Head Gasket for 25hp Johnson
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<blockquote data-quote="Nohasslekindaguy" data-source="post: 347402" data-attributes="member: 10078"><p>I believe the oem head gaskets have a sealer already on the gasket and the shop manual says to not add an additional sealer. Check the head for warping with a straightedge. It may need to be machined a little. After installing the gasket and warming up the motor the first time, let it cool and retorque the head. Sometimes the bolts get loose after this. I believe water can also get into the cylinders from bad exhaust cover gaskets or lower crank seals. Someone correct me if that's wrong please.</p></blockquote><p></p>
[QUOTE="Nohasslekindaguy, post: 347402, member: 10078"] I believe the oem head gaskets have a sealer already on the gasket and the shop manual says to not add an additional sealer. Check the head for warping with a straightedge. It may need to be machined a little. After installing the gasket and warming up the motor the first time, let it cool and retorque the head. Sometimes the bolts get loose after this. I believe water can also get into the cylinders from bad exhaust cover gaskets or lower crank seals. Someone correct me if that's wrong please. [/QUOTE]
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Head Gasket for 25hp Johnson
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