Reply
 
Thread Tools Search this Thread
 
Old 22 March 2014, 14:53   #1
Member
 
Bucksribster's Avatar
 
Country: UK - England
Town: Thame
Make: Ribcraft 585
Length: 5m +
Engine: Suzuki 140
Join Date: Mar 2012
Posts: 217
Stuck gearshift Yamaha 5hp

I am looking for some advice from you learned ribnetters. I bought an ancient Yamaha 5hp (5C6E3 single cylinder water cooled, integral fuel tank) off fleabay for refurbishing as an auxiliary for my Avon. The engine runs fine, but the gear changer is seized. I have taken the lower unit off, and thankfully the gearbox is fine, it is the connecting rod from the gear change lever that is seized. I have tried lots of WD40, but to no avail.

I think I need to dismantle the top end to get to the mechanism that changes the rotation of the lever shaft on the side of the outboard to the up and down of the shaft connecting to the gearbox.

I loosened off all of the bolts I could see on the underside of the powerhead casing, but nothing seemed to move, and I did not have the courage to remove all the bolts completely in case the whole powerhead fell off!

Any advice gratefully received.
__________________

__________________
Bucksribster is offline   Reply With Quote
Old 22 March 2014, 16:09   #2
Member
 
Festinghouse's Avatar
 
Country: UK - England
Town: Chorley / Holyhead
Boat name: Northwind Challenger
Make: Tornado
Length: 6m +
Engine: Mariner 115 efi CT
MMSI: 235080598
Join Date: Jun 2011
Posts: 1,398
RIBase
Send a message via Skype™ to Festinghouse
dont worry about the powerhead coming off as its so easy to remove anyway - took mine off to paint the whole leg and cowl, whilst it was off i was able to clean out all the waterways which get furred up so easily on these small engines. does your linkage not have a grease nipple on it? im pretty sure mine does, maybe try forcing some grease in?
__________________

__________________
"Life may often suck, but the alternative is unacceptable"
MMSI Sticker

Member of S.A.B.S. (Lancashire Division)
Festinghouse is offline   Reply With Quote
Old 22 March 2014, 19:31   #3
Member
 
Bucksribster's Avatar
 
Country: UK - England
Town: Thame
Make: Ribcraft 585
Length: 5m +
Engine: Suzuki 140
Join Date: Mar 2012
Posts: 217
Quote:
Originally Posted by Festinghouse View Post
dont worry about the powerhead coming off as its so easy to remove anyway - took mine off to paint the whole leg and cowl, whilst it was off i was able to clean out all the waterways which get furred up so easily on these small engines. does your linkage not have a grease nipple on it? im pretty sure mine does, maybe try forcing some grease in?
Thanks for this. I could not see any grease nipple. Did your power head come away cleanly when you had undone all the bolts, or did you have to free it off? Also did you have to disconnect much first?
__________________
Bucksribster is offline   Reply With Quote
Old 23 March 2014, 03:38   #4
Member
 
Festinghouse's Avatar
 
Country: UK - England
Town: Chorley / Holyhead
Boat name: Northwind Challenger
Make: Tornado
Length: 6m +
Engine: Mariner 115 efi CT
MMSI: 235080598
Join Date: Jun 2011
Posts: 1,398
RIBase
Send a message via Skype™ to Festinghouse
think it may have needed a little encouragement though not too much. off memory its just a case of releasing the fuel line to carb, throttle cable and ignition coil. my personal opinion is that the job is easy enough, and well worth doing just to do a clean out if nothing else.
__________________
"Life may often suck, but the alternative is unacceptable"
MMSI Sticker

Member of S.A.B.S. (Lancashire Division)
Festinghouse is offline   Reply With Quote
Old 23 March 2014, 04:42   #5
Member
 
Country: UK - England
Town: Leicester
Length: 5m +
Engine: 135hp Mercury
Join Date: Sep 2013
Posts: 707
Try a proper penetrating/release fluid such as Plusgas or one of the 'Freeze and release' products - even diesel works well. WD40 is a waste of time for this purpose.
__________________
paintman is offline   Reply With Quote
Old 23 March 2014, 08:53   #6
Member
 
Country: UK - England
Town: Cowes Isle of Wight
Length: no boat
Join Date: Oct 2010
Posts: 27
IV done lots of these. Common fault. Remove the power head and clean up. Replace with fresh gasket and grease.
__________________

__________________
Tris 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 11:33.


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