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Snapper 1855 -Attempt to start part2 Marvel Schleber DD Carb-Advice Please


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#16 olcowhand ONLINE  

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Posted November 16, 2011 - 09:08 AM

does anyone recommend a certain fuel pump?


I highly recommend going electric. Mr Gasket makes one that works great with these carbs, low pressure so not to over power the float/needle. It's part # is 42S. If your fuel pump on the carb is assembled correctly, you don't have to do anything to it, just leave as is, except block off the vacuum port.

Edited by olcowhand, November 16, 2011 - 06:09 PM.

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#17 olcowhand ONLINE  

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Posted November 16, 2011 - 09:09 AM

Never messed too much with those vacuum fuel pumps but maybe there is a problem with the vacuum "pulse " . Do you have a vacuum gauge you could put on the line to get some readings ? Al


Yes, if the dipstick plug isn't sealing, or the crankcase reed isn't functioning, the pulse will be very weak.
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#18 slingblade OFFLINE  

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Posted November 16, 2011 - 05:05 PM

ok I hooked up a vacuum guage and it read about 8hg when cranking. Pretty low, the dipstick is sealing pretty well.
Where is the crankcase reed valve located, and is it easy to clean/repair?

#19 olcowhand ONLINE  

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Posted November 16, 2011 - 06:11 PM

ok I hooked up a vacuum guage and it read about 8hg when cranking. Pretty low, the dipstick is sealing pretty well.
Where is the crankcase reed valve located, and is it easy to clean/repair?


It is in one of the valve covers, where your rubber breather tube connects from air filter to block. Kinda hard to get at, but easy to repair the reed.

#20 DougT ONLINE  

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Posted November 16, 2011 - 11:21 PM

Did you get the float and needle valve set right? If the needle isn't droping out of the seat it won't pump gas either. Make sure you can blow through the hose going to the carb from the pump.

#21 slingblade OFFLINE  

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Posted November 17, 2011 - 08:26 PM

the reed valve was fine, nothing wrong, clean.

Daniel I picked up a mr gasket 42 S today. Which ignition switch wire did you pull power from? and do I need a fuel pressure regulator ..thanks

#22 olcowhand ONLINE  

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Posted November 18, 2011 - 09:44 AM

the reed valve was fine, nothing wrong, clean.

Daniel I picked up a mr gasket 42 S today. Which ignition switch wire did you pull power from? and do I need a fuel pressure regulator ..thanks


I've used them on 3 different Onans & no need for a regulator. Just run it off your ignition coil supply wire.
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#23 slingblade OFFLINE  

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Posted November 19, 2011 - 01:36 AM

Well I mounted the 42s fuel pump, and she started up first try..didnt have to adjust the carb at all. This thing sat outside a small engine repair shop for 5 years. The original owner decided it was too expensive to fix and just left it there. All it has cost me so far is a carb kit,float and an electric fuel pump. Also oil and filter.

The throttle cable ends had broken off and a piece mechanics wire was used to control the throttle. Cut the outer housing down and hooked it back up.

It runs pretty good, doesnt smoke at all.
The only thing is it has a light clicking noise that is intermittent..dirty valve??

I had to hook up a lawn mower gas tank on it, as the fuel bushing/grommet is leaking.
Hope my local small engine guy stocks them.

Tomorrow if I can I will air up front tire and see if it drives.

The problem is I dont know what was wrong with this tractor in the first place.

#24 ducky ONLINE  

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Posted November 19, 2011 - 10:47 AM

[quote name='slingblade']
I had to hook up a lawn mower gas tank on it, as the fuel bushing/grommet is leaking.
Hope my local small engine guy stocks them.

Yes he should have them. just let him know the size of the hole in the tank, they are a couple of different sizes.
Way to go and good luck.

#25 slingblade OFFLINE  

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Posted November 19, 2011 - 04:54 PM

Doing the happy dance!!!!! Got the fuel tank bushing(for both) came home hooked it up poured a large bottle of slime in the front tire and put in new tire valve stem. She runs.fires up first try..drove it up and down the driveway a few times(it's -20celcius) brrr
..running nice the ticking has diminished. You guys are awesome!!! Thank you for being patient...I am beginning to like red alot!...I know it needs lots of cosmetic work but that will have to wait until spring.

Now to see if the rear blade from the sears will fit..

#26 ducky ONLINE  

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Posted November 19, 2011 - 06:02 PM

You work with RED and it will take care of you.
ENJOY your Massey.
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