Reply
 
Thread Tools Search this Thread
 
Old 25 July 2012, 04:10   #1
Member
 
Country: Australia
Town: minyama
Boat name: roxy
Length: 6m +
Engine: yamaha v4 115hp
Join Date: Jul 2012
Posts: 2
yamaha v4 115 problem??

Hi everyone, have been watching but this is my first thread..

I have just inhereted a yamaha long leg mid to late 90's..

This motor had not been started for 2 years and was in a dry dock. only done 80hours..

I did a commpression test... Fine

Pulled the carbies down did the plugs gave it a good clean and grease and got it started in 3 hours... Purrs like a cat... When i use my forward controls all cables work under hood but gear doesn't engage.. I can put it in gear and spin the prop either way by hand.. Pulled prop off and i can turn the spline with two fingers??

It was running fine before parked and looks new after a good clean..

Got me stuffed, hope you guy's have some ideas's on where to start looking...

How could gearbox not engage from just sitting under a tarp..

Help needed please.

ps great forum.
__________________

__________________
tiny is offline   Reply With Quote
Old 25 July 2012, 09:52   #2
Member
 
m chappelow's Avatar
 
Country: UK - England
Town: yorkshire
Boat name: little vicky
Make: avon ex RNLI
Length: 3m +
Engine: tohatsu
Join Date: Mar 2008
Posts: 2,310
Could the linkage from the remotes not be getting enough travel to actually plop it in gear , even though it looks like there moving ok they could be out of adjustment or
Any other linkages further down the leg that could have come apart ..or siezed.
Unless you've done it I would disconnect the remotes and try move the linkage by hand .

Have you checked the gearbox and refilled with the correct grade of oil ,
Any water come out when you drained it .

how about any mechanism that's out of sync or seized To stop it being started up in gear.
__________________

__________________
m chappelow is offline   Reply With Quote
Old 25 July 2012, 16:50   #3
DM
RIBnet supporter
 
Country: UK - England
Boat name: Little Wing
Make: Searider 5.4
Length: 5m +
Engine: Tohatsu 90
Join Date: Aug 2002
Posts: 1,067
Quote:
Originally Posted by tiny View Post
How could gearbox not engage from just sitting under a tarp..
Corrosion of the shift shaft.

Until the mid nineties, Yam shift shafts were made out of steel. They corrode, get thin, start to twist making gear selection difficult and eventually break.

Drop the leg and look up the mid section with a torch. If its broken, bent or corroded, the replacement part is now stainless steel.

Bad news is that normally its powerhead off to change, however, some clever people have managed to modify the head of the shaft.
DM is offline   Reply With Quote
Old 25 July 2012, 18:04   #4
Member
 
Country: Australia
Town: minyama
Boat name: roxy
Length: 6m +
Engine: yamaha v4 115hp
Join Date: Jul 2012
Posts: 2
Thanks guy's, the linkages move the leavers with ease, is there any electronic control in forward controls that would stop it engaging.. Like something connected to the lift up red lever.. Or is it all mechanical.. Also i took the inspection panels off the side of leg and the adjustable nets didn't move at all between neutral and reverse..

Thanks
__________________
tiny 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 18:07.


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