Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 12-06-2014, 13:51   #16
Registered User

Join Date: Jul 2012
Location: france/dordogne
Boat: Fountaine Pajot Lavezz 40ft
Posts: 197
Re: Yamaha Outboard No More Thrust?

Sorry guys but this is not helping us, I will rephrase what I have done;

We banged on some shallow rocks that pushed the outboard up and then
did not want to turn it's prop!
I have a prop which has this safety broken and it doesn't look the same
as the one I just taken off, allthough you are going to say that you can't
see the damage!
So now,
Propeller taken off, I can turn the axe of the prop when in forward or reverse??
I have been told that some outboards have a key somewhere that might be
broken, but maybe not on this Yamaha 9.9, So,,,,,
In that case we have broken something else , because even at throttle
the prop don't turn,
So we hit that rock going forward but it is not going backwards either,,
we are getting handy with the oars, spare parts probably difficult here,
but I would still like to know what is wrong with the bugger!!
__________________

__________________
laforge24 is offline   Reply With Quote
Old 12-06-2014, 14:21   #17
Registered User
 
brownoarsman's Avatar

Join Date: Nov 2008
Location: Round Bay, Severn River
Boat: Formerly Pearson 28-1, now just a sailing dinghy
Posts: 1,320
Re: Yamaha Outboard No More Thrust?

We had the same issue on a charter. I've never worked on outboards before so will butcher this explanation, but the charter company thought that maybe it was something to do with whatever transmission outboards use to engage forward from neutral, e.g. the gears couldn't mesh. Maybe check the cable from the gear shift lever and make sure its tension/track is appropriate? On a car, I'd also be looking for shavings in my oil. Of course, we just swapped the dinghy out and didn't care much about the problem after that! The joys of chartering
__________________

__________________
brownoarsman is offline   Reply With Quote
Old 12-06-2014, 14:37   #18
Registered User
 
Reefmagnet's Avatar

Join Date: May 2008
Location: puɐןsuǝǝnb 'ʎɐʞɔɐɯ
Boat: Nantucket Island 33
Posts: 2,735
Re: Yamaha Outboard No More Thrust?

Is there a clamp joining the gear change rod to the lower unit? I had a small Yammi that did the same thing and the problem was the clamp had loosened. By some miracle I actually had the oem toolkit on hand and got going again in a few minutes.
__________________
Reefmagnet is online now   Reply With Quote
Old 12-06-2014, 15:17   #19
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,049
Images: 12
Re: Yamaha Outboard No More Thrust?

Quote:
Originally Posted by laforge24 View Post
Sorry guys but this is not helping us, I will rephrase what I have done;

We banged on some shallow rocks that pushed the outboard up and then
did not want to turn it's prop!
I have a prop which has this safety broken and it doesn't look the same
as the one I just taken off, allthough you are going to say that you can't
see the damage!
So now,
Propeller taken off, I can turn the axe of the prop when in forward or reverse??
I have been told that some outboards have a key somewhere that might be
broken, but maybe not on this Yamaha 9.9, So,,,,,
In that case we have broken something else , because even at throttle
the prop don't turn,
So we hit that rock going forward but it is not going backwards either,,
we are getting handy with the oars, spare parts probably difficult here,
but I would still like to know what is wrong with the bugger!!
OK, stick with us - you are using a second language, no? And sometimes we are misinterpreting. That's OK as long as you stay at it with us!

So now I understand that the actual prop shaft itself is freely turning when engaged in gear. Correct?

When you engage the shift lever in forward and reverse, do you feel a resistance or hear a "clunk" sound? If so, the clutch is probably engaging and there is something wrong with the prop shaft and/or gear. You will need to pull this part out and see if there is anything wrong in it. Before doing that, check to make sure there is gear oil in it and no damage to the casing. You will need to drain the gear oil to pull out the prop shaft anyway.

If you do not feel or hear the clutch engaging, then it is possible you have a broken linkage in the shift mechanisms. Look inside the cowling and follow the mechanism from the base of the shift lever to see if anything is broken or disconnected. Next, check the shift rod that extends down the leg to the prop gearbox. This is a two-piece rod that is joined in an open part of the leg (about halfway down) with a hex coupling nut. Make sure this nut is connecting both parts of the shift rod. If it is, shift it back and forth and see if this nut is moving up and down with the rod.

And report back!

Mark
__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Old 26-06-2014, 23:19   #20
Registered User

Join Date: Jul 2012
Location: france/dordogne
Boat: Fountaine Pajot Lavezz 40ft
Posts: 197
Re: Yamaha Outboard No More Thrust?

Sorry for not having replied earlier,
but after the last quote I just took the the engine apart,
starting with the proppeler case, the one in the same lenght as the prop!
this broke because it had not come off in 15 years, but inside it
all looked good, same as the prop itself!!
So I took off the gear box case by undoing the engagement lever
and then something fellll
Apparently the driveshaft that goes from the engine to the gearbox
has at the end a thinner ending , with a small bolt in it to hold a meshgear
and that had broken of the driveshaft!

So guys, not a ****ed prop, but a broken driveshaft
about 750$ in parts, so I will be without an outboard for a while
row row row your boat
__________________

__________________
laforge24 is offline   Reply With Quote
Reply

Tags
outboard

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Want To Buy: Yamaha 9.9 DE "High Thrust" jamesboxhead Classifieds Archive 0 02-11-2012 23:53
For Sale: 2002 Yamaha FT9.9D Hi-Thrust Outboard sailjumanji Classifieds Archive 2 27-06-2012 20:06
For Sale: Yamaha T8 High Thrust Kicker Motor Real World Classifieds Archive 2 04-08-2011 09:36
Yamaha 9.9 Hi-Thrust Outboard Motor Downthere Classifieds Archive 0 01-03-2009 12:47



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 01:45.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.