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Hose tube broke off lower unit 1991 90 hp

vane

Regular Contributor
"On my 1991 90hp mercury 3 cylinder I just noticed a tube- hose coming out of the back upper side, of my lower unit going upwards.its broke off just were it comes out,what is this and were does it go,all I can think of is a odometer hose,not sure .thanks for the info in advance"
 
"should I plug the line ,if im

"should I plug the line ,if im not going to use speedometer.or will it be fine to leave open"
 
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