On my 1990 25 HP - there are 2 small 1/4" outside diameter hoses that run on the 'linkage' side of the motor from the cylinder head area to the front of the motor - attaching with barbs just under the carb. These hoses were originally solid black in color - but recently one developed a crack - which led me to discover these hoses carry water - as the water was coming out of the crack when I was pulling the starter rope - with no spark plugs in it.
That threw me as I had (thought) that all water would drain out of the motor if it just sat upright - out of the water - and if the starter rope was pulled a couple of times with the spark plugs out to allow the impeller to rotate and the remaining water to drain out. Obviously not - as I had the motor sitting for a couple of days - then had pulled it over 3-4 times - with no spark plugs in it - and then the next day had again pulled it over & that is when I saw the water squirting out of one of the hoses.
I replaced the cracked hoses with clear plastic gas line hose. When I run the motor I can see ...some... water moving through those hoses but it is not a constant stream. Meanwhile the 'telltale' for the water pump is spewing a large amount of water & I assume that means the impeller is in good shape. That got me to wondering how to determine if the amount of water in those hoses is the 'right' amount of flow - and as a subsequent question - how best to drain the water out of the motor for winter storage.
That threw me as I had (thought) that all water would drain out of the motor if it just sat upright - out of the water - and if the starter rope was pulled a couple of times with the spark plugs out to allow the impeller to rotate and the remaining water to drain out. Obviously not - as I had the motor sitting for a couple of days - then had pulled it over 3-4 times - with no spark plugs in it - and then the next day had again pulled it over & that is when I saw the water squirting out of one of the hoses.
I replaced the cracked hoses with clear plastic gas line hose. When I run the motor I can see ...some... water moving through those hoses but it is not a constant stream. Meanwhile the 'telltale' for the water pump is spewing a large amount of water & I assume that means the impeller is in good shape. That got me to wondering how to determine if the amount of water in those hoses is the 'right' amount of flow - and as a subsequent question - how best to drain the water out of the motor for winter storage.
