Went to change the impeller on my 2005 Tohatsu 5hp 4 stroke that I bought used and while I was removing the lower unit the water pipe was stuck in the water pump rubber grommet snugly and in the process the water pipe snapped in a couple of places due to corrosion (about 10” above the water pump and at the elbow at the top where it goes to the housing). Most likely the impeller had not been changed for a long time and the rubber grommet didn’t release the water pipe as the rubber has become hardened. The water pipe ultimately came out of the grommet with only a slight pull, but is now split in two rendering it useless.
A few questions regarding the repair.. after reading the Service Manual it looks like I will have to pull the Power Unit in order to gain access to the water pipe, is this correct? Is this a common issue with these outboards that are used in saltwater and do I need to consider any other maintenance when attempting this repair? Also, is it worth making the repair or does this level of corrosion indicate bigger issues?
The outboard was running fine and starting on the first or second pull always. I used it a handful of times with no issues and the impeller change was just to perform general maintenance. I will upload a photo if I can figure it out. Thanks in advance.
A few questions regarding the repair.. after reading the Service Manual it looks like I will have to pull the Power Unit in order to gain access to the water pipe, is this correct? Is this a common issue with these outboards that are used in saltwater and do I need to consider any other maintenance when attempting this repair? Also, is it worth making the repair or does this level of corrosion indicate bigger issues?
The outboard was running fine and starting on the first or second pull always. I used it a handful of times with no issues and the impeller change was just to perform general maintenance. I will upload a photo if I can figure it out. Thanks in advance.