The Hull Truth - Boating and Fishing Forum

Go Back   The Hull Truth - Boating and Fishing Forum > SERVICES > A1Outboard Services


Random Quote: Fortune favors the bold.
Thread Tools Search this Thread
Old 07-24-2009, 06:58 AM
Senior Member
Join Date: Mar 2009
Location: Kenner, La.
Posts: 121
Cool Yamaha Pressure Relief Valve

Yamaha redesigned the Pressure Relief Valve from one with two stems to one with a mushroom end and a stem. Diagram shows stem to face motor with mushroom towards spring! Discussions vary on correct placement of new design valve! Any input would help! Thanks...
RABBITFISH is offline  
Old 07-24-2009, 07:15 AM
Senior MemberCaptains Club Member
Join Date: May 2001
Location: Mosquito Inlet, FL
Posts: 1,381

About three years ago I got an overheat alarm and found the valve all crudded up. I changed it to the new style and put it together with the spring on the stem. It hasn't missed a lick since.
loose_cannon is offline  
Old 07-24-2009, 12:38 PM
Junior Member
Join Date: Dec 2004
Posts: 28

I replaced mine about 2 months ago after getting alarms while traveling in no wake zones. I stretched the spring a little and installed spring on stem. No problems since and tell-tale has a stronger stream. The old style stem had a slight groove and maybe kept valve from fully seating. Good luck, John
jjblbi is offline  
Old 07-25-2009, 03:29 AM
Senior MemberVendorCaptains Club Member
Join Date: Feb 2007
Location: Pgh,Pa/Orlando/Atlanta
Posts: 2,499
Send a message via Yahoo to A1 Outboard

The Yamaha diagram is incorrect. The stem goes into the spring and the dome into the rubber seat.
Home Of the Finest Rebuilt outboards
Deland Fl/West Sunbury Pa /Atlanta /Portsmouth,Va/Ft Lauderdale
call toll free 1 877 9832537
A1 Outboard is offline  

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
2000 Yamaha 150 ox66 SW II pressure relief valve retdguy SIM Yamaha / Verado Club Parts 5 05-26-2009 05:28 PM
HWH Pressure/Temp Relief Valve Elusive The Boating Forum 5 06-16-2008 07:58 AM
defective pressure relief valve? brianm333 The Boating Forum 2 06-27-2006 08:10 PM
Pressure Relief Valve stripertom SIM Yamaha / Verado Club Parts 1 03-10-2006 11:42 PM
Yamaha OX 66 Pressure Relief (poppet) Valve george2431 SIM Yamaha / Verado Club Parts 3 05-26-2004 08:42 AM



Powered by vBulletin® Version 3.7.6
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.2.0