Reply
 
Thread Tools Search this Thread
 
Old 10 November 2018, 07:27   #1
Member
 
Country: UK - England
Length: 5m +
Join Date: Feb 2016
Posts: 24
Carburettor draining Yamaha 3cylinder outboard

Hi guys ,

Bit of a niche question - but does anyone have a clever trick, or know where I can buy a suitable tool for removing the bottom carb drain screw on my 30hp Yamaha 3 cylinder.

I manage with a lot of swearing and fiddling with a kitchen knife but itís not pretty or quick! Itís in such a fiddly location I canít get a spanner or a socket set to get it.

Anyone got any clever tricks?

Phil
__________________

__________________
Pramsd is offline   Reply With Quote
Old 10 November 2018, 07:43   #2
Member
 
Country: UK - Scotland
Town: north ayrshire
Boat name: charlie girl
Make: reiver 3.8/regal3760
Length: 10m +
Engine: 40hp 2st 2x6lp 315
Join Date: Jul 2009
Posts: 2,029
If its just for storage run the engine with no fuel line untill it stops
__________________

__________________
beamishken is offline   Reply With Quote
Old 10 November 2018, 08:14   #3
Member
 
Country: UK - England
Town: Bristol
Make: Ribcraft
Length: 5m +
Engine: Yamaha
Join Date: May 2006
Posts: 4,266
There isnt. Its only a standard deep neck ring spanner. They can snap easily tho
__________________
Member of S.A.B.S. West Country Division
matt h is offline   Reply With Quote
Old 10 November 2018, 10:03   #4
Member
 
Country: Other
Make: Avon Searider
Length: 4m +
Engine: Yamaha 50
Join Date: Jan 2004
Posts: 5,473
I've had this issue! In the end I decided the safest bet was to take all three carbs off. Bit of a pain but at least you know it's been done properly without risking breaking anything. The RNLI fit nice big thumb screws on these drain screws so you don't need a tool. Would quite like something similar.
__________________
Tim M is offline   Reply With Quote
Old 10 November 2018, 12:33   #5
Member
 
Country: UK - England
Length: 5m +
Join Date: Feb 2016
Posts: 24
Thanks guys - deffo like the sound of those thumb screws , would be much easier.

I don’t really like the running the engine dry trick. I do that to a point every time I come in with the boat, but for winterising I like to drain the carb properly, blow it through with an air line etc.

Also always reluctant to run a 2 stroke dry.. I know its pedantic but they rely on lubrication in the fuel so it can’t be great for the cylinders to run it dry (appreciate that’s a properly cautious view)
__________________
Pramsd is offline   Reply With Quote
Old 10 November 2018, 12:42   #6
Member
 
Country: Other
Make: Avon Searider
Length: 4m +
Engine: Yamaha 50
Join Date: Jan 2004
Posts: 5,473
Is it an auto mixing or pre mix model?
__________________
Tim M is offline   Reply With Quote
Old 10 November 2018, 15:16   #7
Member
 
Country: UK - England
Town: Retford
Boat name: Spy-sea-one
Make: Mercury
Length: 3m +
Engine: Suzuki Outboard/25/4
MMSI: 235074042
Join Date: Oct 2011
Posts: 4,837
So when you've run it dry how much fuel comes out of the float bowls.


I thought all cylinders were milled with tiny x's to hold oil for lubrication so the engine never starts dry.
__________________
jeffstevens763@g is offline   Reply With Quote
Old 10 November 2018, 16:06   #8
Member
 
Country: UK - England
Length: 5m +
Join Date: Feb 2016
Posts: 24
Itís the autolube version .. and a fair amount still comes out of the carb when I drain it..

I just wish the screws were easier to get to, if they were accessible iíd be tempted to drain them after every outing.

Iím paranoid because when I first got the engine it was a bit of a nightmare to sort, the carbs had been left full and the jets were so badly seized and clogged it took a blow torch and a lot of fiddling to clean them up.

Didnít know that about the cylinders - would make sense for sure!
__________________

__________________
Pramsd is offline   Reply With Quote
Reply

Tags
outboard, yamaha

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 21:27.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.