WATER PUMP in a NISSAN 50 H.P.
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LOUIS B HOLUB
- Admiral
- Posts: 1315
- Joined: Wed Oct 19, 2005 7:40 am
- Location: 1999 Mac-X, Nissan 50 HP, Kemah, TX, "Holub Boat"
WATER PUMP in a NISSAN 50 H.P.
My 1999 Mac X has "very low" hours...possibly 35-40 (former owner didnt use the BOAT). The carbs had to be cleaned, and the engine functions well now. BUT...a "fishing" boat owner said that the water pump ought to be replaced every 5-7 years. My QUESTIONS are, 1. is that true, 2. is it a costly, big, JOB. (1999 Nissan 50 HP). THANKs for any follow ups or IDEAs !! Im using the engine most of the time in SALT WATER, former owner used it only in FRESH WATER.
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kmclemore
- Site Admin
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- Sailboat: MacGregor 26X
- Location: Ambler, PA -- MACX2018A898 w/ Suzuki DF60AV -- 78 BW Harpoon 4.6 -- 2018 Tahoe 550TF w/ 150 Merc
Please see another existing discussion on this topic, HERE.
Basically:
1. The owner's manual says replace annually, but many of us have used ours for years - depends how often you use the motor and under what conditions (salt water, dirty water, etc.). As you're using yours in salt water, I'd guess you'd want to do it every few years. Have a look at your water overflow output (aka the 'pee' tube)... IMHO if it's a nice steady stream at idle, your pump is fine.
2. Somewhat costly - you have to drop the lower unit. But with a shop manual for the motor you could easily do this job yourself with minimal tools. Just take it easy getting off the bolts that hold the pump together... there have been reports of in some motors having them sieze and snap off, though I'm not sure that's happened on Tohatsu/Nissans.
Basically:
1. The owner's manual says replace annually, but many of us have used ours for years - depends how often you use the motor and under what conditions (salt water, dirty water, etc.). As you're using yours in salt water, I'd guess you'd want to do it every few years. Have a look at your water overflow output (aka the 'pee' tube)... IMHO if it's a nice steady stream at idle, your pump is fine.
2. Somewhat costly - you have to drop the lower unit. But with a shop manual for the motor you could easily do this job yourself with minimal tools. Just take it easy getting off the bolts that hold the pump together... there have been reports of in some motors having them sieze and snap off, though I'm not sure that's happened on Tohatsu/Nissans.