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 Nissan 9.8 carb maintenance		  New Topic  Topic Locked
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dmpilc
Master Marine Consultant

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USA
4593 Posts
Initially Posted - 08/10/2011 :  09:05:29  Show Profile
The marina manager and I (actually I watched him mostly) took the carb apart yesterday to clean out the low idle jet. Luckily, I didn't have to replace it, although I had a spare on hand. I wish I had taken the camera with me to show you guys what it looked like. The carb came off easily. The bowl had an amazing amount of crud in it, mostly varnishing...and I almost always ran the motor dry. However, the shape of the bowl is such that some gas will remain in there. He stressed to me the importance of using ethanol-free gas and to not use gas over 30 days old to minimize the junk build-up in the bowl. I hope to get the motor back on the boat today.
Meanwhile, the 5 hp Merc has done a great job of getting me in and out of the slip and marina. I almost feel like leaving it on there, but the admiral likes the electric start on the Nissan!

P.S. When you pull the carb, be sure to remove the plate on the other side of the carb from the bowl and clean the air channel under that plate.
DavidP
1975 C-22 SK #5459 "Shadowfax" Fleet 52
PO of 1984 C-25 SK/TR #4142 "Recess"
Percy Priest Yacht Club, Hamilton Creek Marina, Nashville, TN
Edited by - dmpilc on 08/10/2011 09:08:24

dmpilc
Master Marine Consultant

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USA
4593 Posts
Response Posted - 08/11/2011 :  07:04:28  Show Profile
Motor is back on the boat and running great. Glad that chore is over!
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DaveR
Master Marine Consultant

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USA
2015 Posts
Response Posted - 08/11/2011 :  08:07:04  Show Profile  Visit DaveR's Homepage
Pretty simple little deals aren't they? While I don't pretend to know the intricacies it's not real tough to take one apart and clean it up. The worst of it is imagining what you MIGHT run in to if you've never had one apart.
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John Russell
Master Marine Consultant

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USA
3444 Posts
Response Posted - 08/11/2011 :  10:39:49  Show Profile
Probably easy enough unless you're doing it while the motor is on the boat and you drop parts in the water like my neighbor did this spring. That was before he learned about putting an inflatable kiddy pool under the motor while working on it.
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dmpilc
Master Marine Consultant

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USA
4593 Posts
Response Posted - 08/11/2011 :  14:40:17  Show Profile
The kiddie pool is a great idea. Good idea for in-the-water oil changes, too, any leak would go into the pool instead of the lake.
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.