[Rhodes22-list] Outboard Stalling

MichaelT mticse at gmail.com
Wed Sep 3 20:39:26 EDT 2008



Looks like the fuel filter did the trick but also replaced the motor side
hose end connector.
Tested while docked in forward gear in 3/4 throttle 3 times. Ran like a
champ !

Michael


MichaelT wrote:
> 
> Just checked my local Yamaha dealer and luckily they have all the parts
> waiting for me:
> 
> 1) 2 x Diaphram & Gasket
> 2) Fuel filter
> 3) Primer bulb
> 
> I will recheck the venting and replace the screw if needed.
> 
> I plan to replace all and hope for the best :)
> 
> Thanks Rummy/Mike !
> 
> Michael
> 
> 
> R22RumRunner wrote:
>> 
>> Mike,
>> Most fuel pumps that I've seen over the years have two or three screws  
>> holding the cover in place. Replacing the diaphragm is easy. This is one
>> you can  
>> do. Most fuel pumps are mounted on the side of the engine casing because
>> it 
>> uses  the vacuum of the motor for power.
>>  
>> Rummy
>>  
>>  
>> In a message dated 9/2/2008 4:47:41 P.M. Eastern Daylight Time,  
>> mticse at gmail.com writes:
>> 
>> 
>> Rummy,
>> 
>> Is this something I can do? My water pump also gave  out at the begining
>> of
>> the season. Got a parts diagram from a local dealer,  unbelievably a
>> water
>> pump kit was in stock, worked off the parts diagram  and replaced the the
>> impeller myself. So I'm somewhat mechanical. Can you  give a brief
>> instruction on what to do? Any possibly complications I might 
>> experience? 
>> 
>> I was able to locate the diaphram (2 sited) you speak of  off the
>> carbeurator
>> diagram online (thanks to Mike). I suppose just order  the parts and off
>> I
>> go?
>> 
>> Thanks,
>> Michael
>> 
>> 
>> R22RumRunner  wrote:
>>> 
>>> You all are close to the problem, but it's so obvious  that it often is  
>>> forgotten. After 20 years of use, the  diaphragm in the fuel pump has
>>> quit 
>>> working. 
>>> The parts can  be had from your dealer. The kit comes with everything 
>>> you 
>>> need  to replace it: new diaphragm and gasket. All together it's a
>>> fifteen 
>>>  minute 
>>> job.
>>>  
>>> Rummy
>>>  
>>>   
>>> In a message dated 9/2/2008 3:05:36 P.M. Eastern Daylight Time,   
>>> mweisner at ebsmed.com writes:
>>> 
>>> Michael  T,
>>>  
>>> You may wish to check out the Yamaha parts website  at:;
>>>  http://www.yamaha-motor.com/outboard/parts/home.aspx
>>> 
>>> Put in  the  following:
>>> Step 1: Product Line = Outboard
>>> Step 2:  Year = (your motor's year)
>>> Step 3: Model = (your  motor's model  or select one of the 8hp)
>>> 
>>> I tried a 1988 8hp long shaft   as a guess and found the attached image
>>> of
>>> the 
>>> gas tank &  filter (#22)  (it is probably at the very bottom of the
>>> email)
>>>  
>>> Mike
>>> s/v Shanghai'd  Summer ('81)
>>> Nissequogue  River, NY
>>> 
>>> From: "MichaelT"   <mticse at gmail.com>Sent: Tuesday, September 02, 2008
>>> 1:29 
>>>  PM
>>>>
>>>>
>>>> OK...some basic questions  Mike:
>>>>
>>>>  Where's the fuel filter? Its not refrenced  in the Yamaha owner's 
>>>> manual.
>>>> Btw, I disconnected the  hose at the tank end and blew air into  the
>>>> tank 
>>>>  hose
>>>> opening (w/ my mouth) and was/felt clear. I  wanted to  disassemble the
>>>> top 
>>>> pf
>>>> the tank where the  hose  enters but did not see any screws.
>>>>
>>>> I  suppose if the fuel filt  fix doesn't work we'll move to option #2,  
>>>> replace
>>>> the  hose/primer bulb  assembly.
>>>>
>>>>  Michael
>>>>
>>>>
>>>>  R22MikeW  wrote:
>>>>>
>>>>> Michael  T,
>>>>>
>>>>>  Open the tank filler cap and see if  it runs.  If it does, the tank
>>>>> vent 
>>  
>>>>>  is
>>>>> clogged.  If it doesn't, you need to check  the  fuel filter for an
>>>>> obstruction or clog.  It may be  easier  to replace rather than check.
>>>>> Lastly, you may  have a bad fuel pump  (the primer bulb may be
>>>>> actually
>>>>>  filling the fuel bowl.)  I  have also seen problems in the primer 
>>>>> bulb
>>>>> where
>>>>> the  one-way valve fails,  preventing fuel draw by the engine.  The 
>>>>>  remedy
>>>>> is
>>>>> a ne primer bulb which includes  the  valves.  Let's hope that it is
>>>>>  simply
>>>>> a
>>>>> clogged  tank vent.  Let me  know what you find.  If it is a reliable  
>>>>>  engine
>>>>> otherwise, this is too simple a problem to  deep  six it.
>>>>>
>>>>> Mike
>>>>> s/v Shanghai'd  Summer  ('81)
>>>>> Nissequogue River,  NY
>>>>>
>>>>> From:  "MichaelT"  <mticse at gmail.com>Sent: Tuesday, September 02, 2008   
>>>>> 12:33
>>>>>  PM
>>>>>>
>>>>>> I have a  Yamaha 8hp/2-Stroke  outboard that is continuing to stall
>>>>>>  everytime  I
>>>>>> use it. The fix that I've had to perform while the   outboard is
>>>>>> running 
>>>>>> is
>>>>>>  by
>>>>>>  continuing to squeeze/pump the primer bulb every  30 secs or so. 
>>>>>> Somehow
>>>>>>  the
>>>>>> motor is not properly sucking in  the gas. All  hose clamps have been
>>>>>> tightened w/ no obstruction  on  the gas tank side. Any ideas?
>>>>>>
>>>>>> The  motor is  20 years old. Hence, also considering getting  a
>>>>>>  Yamaha/Tohatsu
>>>>>> replacement. I  like the Yamaha because of the  shift lever being
>>>>>>  located
>>>>>> at
>>>>>> the motor tiller   handle (and electric start, remote control 
>>>>>>   capabilites),
>>>>>> the Tohatsu for its simplicity. Looks like  2  strokes are outlawed,
>>>>>> can't
>>>>>>  find them  anywhere.
>>>>>>
>>>>>> Hope  everyone had a good summer  sailing. I had a wonderful time 
>>>>>> thus
>>>>>> far
>>>>>> on
>>>>>>  my  first year w/ my Rhodes and look forward to extending the season  
>>>>>> as
>>>>>> far
>>>>>> as I   can!
>>>>>>
>>>>>> Best,
>>>>>>   Michael
>>>>>> s/v Silverside
>>>>>> --  
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>>>>>>
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>>>>>>
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>>> -------------- next part --------------
>>> A non-text attachment  was  scrubbed...
>>> Name: Yamaha 1988 8hp Fuel Tank.gif
>>>  Type: image/gif
>>> Size:  15832 bytes
>>> Desc: not  available
>>> Url :  
>>>  
>> http://www.rhodes22.org/pipermail/rhodes22-list/attachments/20080902/80a1d392/attachment.gif   
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> 
> 

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