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Adding a telltale on my 40 hp tohatsu
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<blockquote data-quote="Pappy" data-source="post: 380747" data-attributes="member: 3278"><p>Okay, what I do on an engine that I do not know like the back of my hand is to pick a spot on the exhaust cover. How I pick the spot is to look up a picture of the gasket and see where the water passages are. I can verify by starting the engine and feeling the colder spots on the cover. </p><p>Drill in for a 1/8" pipe thread and install a plastic overboard indicator nipple from a Johnson/Evinrude product. They are inexpensive and non-corrosive. Route the hose over the top of the block/cylinder head so that you know the pump is building enough pressure to completely fill the powerhead. </p><p>Drill through the lower motor pan and either install the correct fitting there as well or drill a touch small so it will trap the hose.</p></blockquote><p></p>
[QUOTE="Pappy, post: 380747, member: 3278"] Okay, what I do on an engine that I do not know like the back of my hand is to pick a spot on the exhaust cover. How I pick the spot is to look up a picture of the gasket and see where the water passages are. I can verify by starting the engine and feeling the colder spots on the cover. Drill in for a 1/8" pipe thread and install a plastic overboard indicator nipple from a Johnson/Evinrude product. They are inexpensive and non-corrosive. Route the hose over the top of the block/cylinder head so that you know the pump is building enough pressure to completely fill the powerhead. Drill through the lower motor pan and either install the correct fitting there as well or drill a touch small so it will trap the hose. [/QUOTE]
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Adding a telltale on my 40 hp tohatsu
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