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allis 720/ onan

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Nate (OH) View Drop Down
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Joined: 12 Sep 2009
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    Posted: 23 Mar 2018 at 7:37am
All you guys that are running electric fuel pumps: what are you running?   Most guys I see running them are running the facets.  Specify what you use and PSI.  Getting tired of having to purchase fuel pump rebuild kits every year.  
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Acdiesel View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Acdiesel Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2018 at 8:31pm
i use a facet,( i think it's the 3-4 psi) but i find that the heat from the engine will cause them a premature failure, i mow 3 acres with mine (so about 55 hours per year)  i usually get about 3 years out of one.

dan
 
D19 diesel,D17 diesel SER.3 D14 NF,D14 WF, D15 SER.II wf
D15 SER.2 DIESEL,D15 ser.II nf
D12 SER.I, D10 Ser.II
2-720'S

Gmc,caterpillar
I'm a pharmacist (farm assist) with a PHD (post hole digger)
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ac720nut View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ac720nut Quote  Post ReplyReply Direct Link To This Post Posted: 25 Mar 2018 at 7:28am
I also use the Facet, so far no problems
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Nate (OH) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nate (OH) Quote  Post ReplyReply Direct Link To This Post Posted: 25 Mar 2018 at 4:01pm
Originally posted by Acdiesel Acdiesel wrote:

i use a facet,( i think it's the 3-4 psi) but i find that the heat from the engine will cause them a premature failure, i mow 3 acres with mine (so about 55 hours per year)  i usually get about 3 years out of one.

dan
 

We use ours for about 6 acres a week and odd jobs so hours normally get racked on lol.  For the last 2-3 years we've had to rebuild the stock fuel pump because the diaphram and seals keep going out.  We normally run them empty of gas and run stabil through them before putting away for winter.  Works well for the most part except this ongoing issue.  Does the 3-4 psi seem ideal?  I was leaning more  toward the lower 1.5-2 models.  


Edited by Nate (OH) - 25 Mar 2018 at 4:02pm
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AC720Man View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AC720Man Quote  Post ReplyReply Direct Link To This Post Posted: 25 Mar 2018 at 8:33pm
Still running the stock pump on both of my 720’s. Haven’t had this issue before. Rebuilt the pump as part of a restoration 7 years ago in one of them. Not sure what’s causing the issue.
1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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talntedmrgreen View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote talntedmrgreen Quote  Post ReplyReply Direct Link To This Post Posted: 26 Mar 2018 at 9:27am
You're going to want the lower PSI pump....3-4 psi will push a lot more fuel than you need.  A nice mod, even with the lower pressure pump, is to enlarge the bore in the fuel return line fitting on the carb.  The oem hole is very restrictive, and when converting, you can end up with fuel in your oil quickly if your pump overwhelms the carb and the return can't handle the flow.
Patterson B1*B1/B1Forklift*B10*BigTen/B1Loader*B110*B208*B206*616*Homelite T16H/T8/T7/RM7E*Landlord/Loader/Trencher*Broadmoor717*Serf525*2110*7790*Legacy XL*Twin 20*Squire9*Squire6*JCPenny 494
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Acdiesel View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Acdiesel Quote  Post ReplyReply Direct Link To This Post Posted: 30 Mar 2018 at 11:00am
YES, I DID HAVE TO DRILL OUT THE RETURN, SO FAR AFTER 7 YEARS HAVEN'T HAD ANY CARB/FLOODING ISSUES.

DAN
D19 diesel,D17 diesel SER.3 D14 NF,D14 WF, D15 SER.II wf
D15 SER.2 DIESEL,D15 ser.II nf
D12 SER.I, D10 Ser.II
2-720'S

Gmc,caterpillar
I'm a pharmacist (farm assist) with a PHD (post hole digger)
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Nate (OH) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nate (OH) Quote  Post ReplyReply Direct Link To This Post Posted: 31 Mar 2018 at 3:04pm
Originally posted by Acdiesel Acdiesel wrote:

YES, I DID HAVE TO DRILL OUT THE RETURN, SO FAR AFTER 7 YEARS HAVEN'T HAD ANY CARB/FLOODING ISSUES.

DAN


That's a sharp looking 720!  


The one on the left we picked up at an auction.  Supposidly had been gone all thru but since we've acquired it we have done nothing but replace things lol.  The one on the right was my great grandfathers who purchased it new.  We acquired this one after my great aunt had sold her farm.  


Edited by Nate (OH) - 04 Apr 2018 at 6:38pm
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chainweaver View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote chainweaver Quote  Post ReplyReply Direct Link To This Post Posted: 19 Apr 2018 at 3:35pm
Nate, try using Startron stabilizer. I quit using Stabil when it ate the gas line on my jd. Had to replace from carb to tank. A friend said stabil will rot from the inside out. Just my two cents.
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Coke-in-MN View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Coke-in-MN Quote  Post ReplyReply Direct Link To This Post Posted: 20 Apr 2018 at 6:02pm
this one on amazon for $12 

W8sunjs Universal 12V Heavy Duty Electric Fuel Pump Metal Solid Petrol 12 Volts

See walmart has this online for $18. https://www.walmart.com/ip/New-12V-Low-Pressure-Universal-Electric-Fuel-Pump/197963606?wmlspartner=wlpa&selectedSellerId=4241&adid=22222222227061826623&wmlspartner=wmtlabs&wl0=&wl1=g&wl2=c&wl3=165546459570&wl4=pla-272691342691&wl5=9019700&wl6=&wl7=&wl8=&wl9=pla&wl10=113537607&wl11=online&wl12=197963606&wl13=&veh=sem
Been using this style on my trucks and on mower engines instead of on both Kohler and other engines - they do come in different pressure ratings 
 On old White Dump truck it supplies enough fuel to run the 400 cu in 6 cylinder engine 

Edited by Coke-in-MN - 20 Apr 2018 at 6:08pm
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"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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Toscani NE SD View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Toscani NE SD Quote  Post ReplyReply Direct Link To This Post Posted: 21 Apr 2018 at 7:19am
I got one from advance auto, think its mr.gasket brand, low psi, been several years now still works good, but we don't have the bad gas trouble a lot of folks have out east,actually no gas troubles. still running factory pump on 620 and that's from 74
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Nate (OH) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nate (OH) Quote  Post ReplyReply Direct Link To This Post Posted: 24 Apr 2018 at 3:34am
Appreciate the advice guys. Still weighing my options and trying to figure out what I want to do.
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Steve in NJ View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve in NJ Quote  Post ReplyReply Direct Link To This Post Posted: 26 Apr 2018 at 9:27pm
Todays Ethenol plays havoc with rubber parts in pumps, carbs etc. That's probably your culprit if there's Ethenol in the fuel you purchase.
Steve@B&B
39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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Nate (OH) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nate (OH) Quote  Post ReplyReply Direct Link To This Post Posted: 27 Apr 2018 at 2:32am
Originally posted by Steve in NJ Steve in NJ wrote:

Todays Ethenol plays havoc with rubber parts in pumps, carbs etc. That's probably your culprit if there's Ethenol in the fuel you purchase.
Steve@B&B


I'm pretty sure that it has a large part to do with it.   We normally run the stabil before storing to help but here lately just seems it doesn't help much.
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