Reply
 
Thread Tools Search this Thread
 
Old 17 December 2013, 14:55   #1
Member
 
Kernow Buoy's Avatar
 
Country: UK - England
Town: Cornwall
Length: no boat
Join Date: Oct 2004
Posts: 1,518
Can't get her top off!

bought a 1992 Yamaha 30hp 2 stroke on a Futura, running extremely well but I was a bit concerned by very weak tell tale so not run it at sea (just as well)
Took water pump apart and found horribly worn impeller so replaced but although stream improved still felt it was weak. Turns out the water tube from the pump to the block had been snapped and a bodged repair made, some of the water from the pump was never making to to the block but coming out of the bodge and running back down the exhaust vent, I need to replace the pipe except I can't get the mid section seperated from the lower cowl.

I've removed 8 bolts (and lifted the block out) but still can't break that gasket so I can get at the top of the pipe (it's only about 2 inches broken off at the top)
Pic 3 is the same mid section as mine showing the 8 bolt holes
pic 4 is the same pipe, mine is split just above the coller
Am I missing something? 'hidden' bolt somewhere or do these things just need plenty of encouragement to come apart?
Attached Thumbnails
Click image for larger version

Name:	IMG_5996.jpg
Views:	115
Size:	134.7 KB
ID:	88428   Click image for larger version

Name:	IMG_5998.jpg
Views:	114
Size:	150.2 KB
ID:	88429   Click image for larger version

Name:	IMG_5993.jpg
Views:	122
Size:	87.9 KB
ID:	88430   Click image for larger version

Name:	IMG_5988.jpg
Views:	123
Size:	146.2 KB
ID:	88431  
__________________

__________________
Kernow Buoy is offline   Reply With Quote
Old 17 December 2013, 15:30   #2
Member
 
samt's Avatar
 
Country: UK - England
Town: Midlands
Make: RNLI Y-Class
Length: 3m +
Engine: Mercury 15hp 2st
Join Date: Jul 2006
Posts: 850
RIBase
I have had these apart before. I can't remember exactly without an engine in front of me. So appologies if I confuse things.

There is a exhaust muffler/manifold inside the drive shaft housing which sits in there tight with rubber dampers. This can be a nightmare to remove. You need to remove the driveshaft housing from the engine mounts, and then prize the two parts apart along the gasket pictured, pulling the manifold (held tight by the rubber dampers) out the driveshaft housing. The manifold is bolted upwards, so there is no easy way around this.

Have a look at this diagram; 1992 30ELRQ Yamaha Outboard UPPER CASING Diagram and Parts
__________________

__________________
samt is offline   Reply With Quote
Old 17 December 2013, 17:00   #3
Member
 
Kernow Buoy's Avatar
 
Country: UK - England
Town: Cornwall
Length: no boat
Join Date: Oct 2004
Posts: 1,518
SamT
Thanks very much for that I think you've described it exactly how it is, I'll have another go in the morning.

Simon she's had a double of plusgas!
__________________
Kernow Buoy is offline   Reply With Quote
Reply

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 22:43.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.