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
>>>> --  
>>>>  View this message in  context:
>>>>   http://www.nabble.com/Outboard-Stalling-tp19273586p19273586.html
>>>>   Sent from the Rhodes 22 mailing list archive at   Nabble.com.
>>>>
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>>>>
>>>>
>>>
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>>
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> 
> 
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