Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 17-08-2011, 10:24   #1
Registered User

Join Date: May 2009
Location: Grenada
Boat: Shorebro,Royal 33 - Aloisius
Posts: 927
Rotor Assembly Will Not Come Off

I am having problems with a 5hp Yamaha. (Photo 1) I have taken off the starter case. (Photo 2) Then removed the pulley starter. (Photo 3) Unscrewed the center nut that secures the rotor assembly to the crank in the cylinder case. (Photo 3) I tried to pulled the bottom portion of the rotor assembly off with a gear puller and actually bent an arm on the puller. It did not move. Is there another nut that needs removed? or is this just so corroded that it won't budge? I have looked at drawing of Yamaha's and it looks like there is no reason other than corrosion that it will not come off. Any suggestions, ideas?
Attached Thumbnails
Click image for larger version

Name:	Outboard 039.jpg
Views:	73
Size:	416.2 KB
ID:	30569   Click image for larger version

Name:	Outboard 040.jpg
Views:	74
Size:	411.6 KB
ID:	30570  

Click image for larger version

Name:	Outboard 041.jpg
Views:	80
Size:	418.3 KB
ID:	30571  
__________________

__________________
landonshaw is offline   Reply With Quote
Old 17-08-2011, 11:12   #2
Registered User
 
courageous cat's Avatar

Join Date: Mar 2008
Location: michigan
Boat: g-cat 5. m
Posts: 156
Images: 1
Re: Rotor Assembly Will Not Come Off

put a good puller on it. tighten it up then give the shaft of puller a wack with a hammer it should pop loose
__________________

__________________
courageous cat is offline   Reply With Quote
Old 17-08-2011, 12:26   #3
Registered User
 
courageous cat's Avatar

Join Date: Mar 2008
Location: michigan
Boat: g-cat 5. m
Posts: 156
Images: 1
Re: Rotor Assembly Will Not Come Off

You could also try a little heat on the flywheel around were the nut came off the crankshaft
__________________
courageous cat is offline   Reply With Quote
Old 17-08-2011, 13:55   #4
Registered User

Join Date: May 2009
Location: Grenada
Boat: Shorebro,Royal 33 - Aloisius
Posts: 927
Re: Rotor Assembly Will Not Come Off

Thank you for your comments. As you agreed that the assembly should be able to come off, I made a space a little bigger to get the next size pulley puller attached. With considerable effort, it came off. I did not use the heat because the fuel tank was VERY close, and even with it removed there might have been a problem. Thanks Dave
__________________
landonshaw is offline   Reply With Quote
Old 17-08-2011, 13:58   #5
Registered User

Join Date: Nov 2008
Location: Sydney, Australia
Boat: Catalina 309 - "Forty Two"
Posts: 4
Re: Rotor Assembly Will Not Come Off

Yamahas (motorcycles anyway) that use flywheel magnetos such as this often have a female thread inside the depression or recess where the end of the crank protrudes (where the nut was).
The OEM puller that is supplied by the manufacturer has an externally threaded body that screws into the recess and a bolt that bears against the end of the crank, and using that tool is the simplest way - it's worth investing in the puller if you plan on keeping the outboard.
Other than that (as previously posted here) a standard 2 or 3 arm puller and a hefty crack with a hammer should do it.
__________________
Don't cry for things that can't cry for you.
thendel is offline   Reply With Quote
Reply

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




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 23:41.


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.