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| Author |
Message |
    
sjperkins
Member
Username: sjperkins
Post Number: 4
Registered: 04-2009
| | Posted on Tuesday, October 27, 2009 - 07:35 pm: | 
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Every discussion I read (on-line) regarding winterizing says to run the motor out of fuel during the fogging process. However my engine manual states "to never run engine with the fuel line disconnected and never run the engine out of fuel". The instructions on the can do not say either way. Which way is corecct, and why would the owners manual indicate to never run the engine out of fuel? 1999 Johnson 175 OceanPro. |
jwbmarine
Senior Member
Username: jwbmarine
Post Number: 5071
Registered: 11-2005
| | Posted on Tuesday, October 27, 2009 - 08:03 pm: |
|
ur eng,is oil/mixed....if u disc the fuel,it fills carbs,and lines full...of oil....lv fuel hooked up,...TREAT the fuel to STABILIZE it....fogging,has nothing to do,....w/fuel... |
Dcramer
Advanced Member
Username: dcramer
Post Number: 185
Registered: 05-2008
| | Posted on Tuesday, October 27, 2009 - 11:29 pm: |
|
What I do is stabilize the fuel with 2+4. After fogging and shutting down, I pull the bowl drain screw out of all 6 carbs. I also remove the filter from the front of the vapor seperator to drain that. Clean the filter, and put it all back together. Some fuel will remain in the VRO pump and fuel lines. You won't run into a problem of excess oil that way. I like to drain the carbs and VST because they are vented and fuel is prone to evaporation even if stabilized. Maybe overkill, but easy insurance. |
sjperkins
Member
Username: sjperkins
Post Number: 5
Registered: 04-2009
| | Posted on Wednesday, October 28, 2009 - 09:10 pm: |
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Is it really necessary to run it out of fuel or to drain the bowls? I have been reading a lot about this question, and it seems to be a controversial one. Seems as though it would dry out the carburetor seals and o-rings. |
Mike Tavary
Advanced Member
Username: tboltmike
Post Number: 172
Registered: 10-2006
| | Posted on Wednesday, October 28, 2009 - 09:34 pm: |
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sjperkins,
If the carbs were left full the float valve can stick to the seat. On my old '76 35hp, the only way to free it was to pull the bowl.
No expert on this, but evaporating gas/oil can form gum.
I am familiar with elastomers and the only way they can dry out is if Plasticizers are leached out of the compound. Nitrile (BunaN) is resistant to fuels but can be attacked by ozone and UV. Viton compounds have virtually infinite shelf or dry air life. |
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