Everything i have been told says that they are built in japan at the diahatsu plant which BRIGGS owns. I have heard of the fuel pump issues on the horizontal shaft bb briggs. One thing i have heard of people doing is getting a small inline fuel pump that puts out 1 or 2 psi to keep the fuel to the oem pump.

 

Take a look at the serial number plate on the side of your engine. Big block engines will say made in Japan. Briggs engines are made in the USA and China. I hope that helps. :usflag:

 

Ahhh, well that may be where the misunderstanding comes in, because briggs owns them... Thanks for the info, I may have to look into that fuel pump setup if replacing the factory one doesn't solve the problem. I was told the replacement is actually placed in a different location somehow so its not top center of the hot engine.
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Everything i have been told says that they are built in japan at the diahatsu plant which BRIGGS owns. I have heard of the fuel pump issues on the horizontal shaft bb briggs. One thing i have heard of people doing is getting a small inline fuel pump that puts out 1 or 2 psi to keep the fuel to the oem pump.

99% sure you are right. Know a guy who has worked for Briggs for a long time. And thats something along the lines he said.

 

Re your issue with the fuel on the Briggs, I have had the same problem 2 or 3 times on a machine that's only 3 months from new in the last couple of weeks, so my local dealer replaced the pump under warranty, however the replacement came with a new hose, from the pump to the carburettor, and this is fitted with a non return valve, supposedly they have been having problems if you switch off even for a minute or so, with the petrol siphoning it's self back into the tank and emptying the fuel lines all you end up with is a carburettor bowl full of gas to use before it has a chance to re pump fuel from the tank.
This modification, seems to have fixed the problem.

 

thanks for the info! I will definately take this info to the dealer. However when at the dealer "the customer is always right" flys out the window, because THEY are the ones with the "education" about engines, not the customer...

Your explination makes good sence though, as I couldn't quite understand how it could be vapor locking, as in all the fuel in the line evaporating... That's just not possible really. There's no where for the vapor to actually excape.

 

Hi Jason, the Briggs & Stratton part number for the new pump and hose kit is; 844088. Good luck.

 

They are Made bi Diahatsu which is owned by Toyota, you can go to the Briggs Vangaurd website and it tells you that Toyota group makes all their Vanguard engines all Briggs does is add their nameplate to engine

 

yes i heard toyota made and designed them so them things are going to last for a very very long time

 

Well one vote for Briggs making the big blocks, one vote for Briggs actually OWNING dihatsu and one vote for Toyota owning Dihatsu and briggs just putting their name on them...

It's no wonder why my dealers were confused. haha.

Either way, I think I see the light. lol. I need to contact my dealer tomorrow, I'll take the fuel pump number with me and see what he has to say. Hopefully he can contact them and get to the bottom of the situation. It's not an issue when it's not 90+ degrees out generally though. I'd imigine the heat does have a lot to do with the fuel wanting to syphon out of the fuel lines though.

 

Well one vote for Briggs making the big blocks, one vote for Briggs actually OWNING dihatsu and one vote for Toyota owning Dihatsu and briggs just putting their name on them...

It's no wonder why my dealers were confused. haha.

Either way, I think I see the light. lol. I need to contact my dealer tomorrow, I'll take the fuel pump number with me and see what he has to say. Hopefully he can contact them and get to the bottom of the situation. It's not an issue when it's not 90+ degrees out generally though. I'd imigine the heat does have a lot to do with the fuel wanting to syphon out of the fuel lines though.

Sounds like vapor locking, are you using fuel containing ethanol?.

 

That was my theory as well, but I don't see how it could empty the fuel line totally and cause the fuel pump to not prime again...

Yes, our gas has ethanol in it, 10% in all 3 grades at ALL gas stations. We are forced to use it, even though it causes decreased fuel economy and has been proven harmful to engine components, especially those of small engines and marine use engines. But we have no choice but to use it because its so good for the farmers ya know!
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Daihatsu Briggs & Stratton (DBS) - In an effort to stave off Japanese competition during the 1980s, B&S entered a 50/50 joint venture with the Daihatsu Motor Company in Japan. Located in Shiga Prefecture (50 miles (80 km) from Osaka, Japan), construction on the then-57,000-square-foot (5,300 m2) plant began in December 1986 and was completed in April 1987. This joint venture was notable for the manufacture of vertical & horizontal crankshaft engines from 12.5 to 22 hp (16 kW) under the Vanguard brand. Today the plant employs roughly 100 people on two shifts and manufactures Vanguard V-twin engines ranging from 14 to 36 hp (27 kW).[3]
The Mitsubishi Agreement - The Vanguard line initially consisted of three single-cylinder engines and several V-twin engines. The V-twins, made by DBS, had sold very well but the single-cylinder engine models, originally produced at B&S's Menomonee Falls plant, didn't fare so well. B&S needed to solve this problem, so, following discussions with several Japanese engine manufacturers, entered into an agreement with Mitsubishi Heavy Industries Ltd. of Tokyo, Japan. B&S produced only certain parts for the engines, while Mitsubishi was responsible for overall production and shipping. The completed single cylinder Vanguard engines were shipped directly to customers worldwide. B&S had exclusive marketing rights only in North America, Europe & Australia/New Zealand. MHI had exclusive marketing rights (under their own brand name) in Malaysia, Taiwan, South Korea & Japan. In other countries both companies competed with the same product under their own brand names which led to considerable friction, and together with escalating production costs in Japan, caused this otherwise successful relationship to fail. B&S commenced marketing alternative US made single cylinder engines under the Vanguard brand in early 2007.[4]

Maybe this will clear everything up......I hope.....Jim

 

Regarding the single-cylinder Vanguards rated from 4.5 to 12.5 hp, they tried to make these domestically from 1988 to 1992 at their Menomonee Falls plant, but in the end were too expensive to keep the company profitable, especially when their union had a grudge against them that started in 1983. It was during 1992 that they inked their deal with Mitsubishi Heavy Industries in order to sell these at a lower cost, further angering what is now Local 2-232. Mitsubishi made the majority of these engines whereas B&S only put the finishing touches on them.

~Ben

 

My 20 hp Vanguard was built in 2014 and says " made in Japan" as does the 18 Vanguard in my 1992 Duetz Allis zt. That being said the old Duetz motor has been flawless where the "new" Vanguard has had every gasket except the base gasket replaced under warranty and now leaks oil from that so either I got a lemon engine or the mfg changed along the way.
Replace your fuel pump, electric is best if your running ethonal in hot weather
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