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#1
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small outboard water pumps
I have a less than one year old Tohatsu 4stroke 4 hp motor that I use on
a canoe. Ive treated the engine well except one time when the motor was transported with the propeller end too high and oil leaked into the head. The motor would not start until the head oil had leaked out and when the engine finally turned over, it started and ran for about maybe 30 seconds (out of water). I took the boat out this weekend and there was no cooling water flow. I took it to the shop where I bought it new about 9 months ago and was informed that I have a bill just under $300 to fix the water pump (and to change the bottom end oil). Is this common with all brands? Are these water pumps very fragile. I read the Tohatsu warentee and it says water pumps are not convered (or something like that, I wonder why they dont warrentee the water pumps).. Im not real happy with this problem but have really enjoyed the boat. Its a 15 foot square stern canoe and the 4 hp 4 stroke moves it along at about 8 mph with the motor and it really takes an effort to burn more than 1/2 gallon gas all day. The canoe is really nice to row - heres a picture of the motor with a "goofball - but works really well" mirror attached so that you can see where you are going when rowing http://analogengineering.com/elevenm...ew_mirror1.jpg This lake is in Colorado. wh |
#2
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Probably all they did was change the impeller, something you probably could
do yourself. The part is probably $5, the rest is labor. Might be worth investing in a service manual. I'd changed mine out in a tohatsu (nissan) 5 hp two stroke and it's no biggie. -- Keith __ I almost had a psychic girlfriend but she left me before we met. "Walt" wrote in message ... I have a less than one year old Tohatsu 4stroke 4 hp motor that I use on a canoe. Ive treated the engine well except one time when the motor was transported with the propeller end too high and oil leaked into the head. The motor would not start until the head oil had leaked out and when the engine finally turned over, it started and ran for about maybe 30 seconds (out of water). I took the boat out this weekend and there was no cooling water flow. I took it to the shop where I bought it new about 9 months ago and was informed that I have a bill just under $300 to fix the water pump (and to change the bottom end oil). Is this common with all brands? Are these water pumps very fragile. I read the Tohatsu warentee and it says water pumps are not convered (or something like that, I wonder why they dont warrentee the water pumps).. Im not real happy with this problem but have really enjoyed the boat. Its a 15 foot square stern canoe and the 4 hp 4 stroke moves it along at about 8 mph with the motor and it really takes an effort to burn more than 1/2 gallon gas all day. The canoe is really nice to row - heres a picture of the motor with a "goofball - but works really well" mirror attached so that you can see where you are going when rowing http://analogengineering.com/elevenm...ew_mirror1.jpg This lake is in Colorado. wh |
#3
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Running them dry will certainly destroy them.
I planned to replace the one on my 30 hp Tohatsu when I had to pull the lower unit for another reason, and I found one blade (lobe?) nearly broken off. I think MAYBE I had at some point run it dry for just a couple of seconds, so maybe that's all it took. IIRC, the parts man where I got these parts said Tohatsu--or maybe all Japanese ob's -- had rather weak impellers. Like I learned after having to replace bearings on boat trailer wheels ....keep the axle OUT of the water!! In this case... keep the lower unit IN the water!! When it's running,of course. "Walt" wrote in message ... I have a less than one year old Tohatsu 4stroke 4 hp motor that I use on a canoe. Ive treated the engine well except one time when the motor was transported with the propeller end too high and oil leaked into the head. The motor would not start until the head oil had leaked out and when the engine finally turned over, it started and ran for about maybe 30 seconds (out of water). I took the boat out this weekend and there was no cooling water flow. I took it to the shop where I bought it new about 9 months ago and was informed that I have a bill just under $300 to fix the water pump (and to change the bottom end oil). Is this common with all brands? Are these water pumps very fragile. I read the Tohatsu warentee and it says water pumps are not convered (or something like that, I wonder why they dont warrentee the water pumps).. Im not real happy with this problem but have really enjoyed the boat. Its a 15 foot square stern canoe and the 4 hp 4 stroke moves it along at about 8 mph with the motor and it really takes an effort to burn more than 1/2 gallon gas all day. The canoe is really nice to row - heres a picture of the motor with a "goofball - but works really well" mirror attached so that you can see where you are going when rowing http://analogengineering.com/elevenm...ew_mirror1.jpg This lake is in Colorado. wh |
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