B&S Engine Problems ... ANY help will be appreciated

Just found your site and from what I've read, you guys really know your stuff ... so .... I hope you can guide me in the right direction.

First of all, I have a B&S Quantum, 6.25 hp engine on my Yardman self propelled mower. The mower has not been used for about 2 years and all of the gasoline had evaporated. So, I installed a new spark plug, air filter, drained and changed the oil, added new, fresh gasoline along with some B&S fuel stablizer.

The main problem with the engine is this: After filling the tank with the fresh gasoline, I noticed that it was leaking from around the air filter. I immediately got a new fuel line and put it in and that seemed to stop the leak. But then (there's always a but, isn't there?) when I use the primer bulb and plunge it either 3 or 4 times, the engine immediately fires up after pulling the starter rope and then runs for only about 2 or 3 seconds. Then it will not fire up again until I use the primer bulb again ... and with the same results. And now, I noticed that it is leaking again from the same area and now when I press on the primer bulb, it seems to be leaking gasoline from the bulb, too.

So .... and ideas out there as to what I may need to look into next? Is it something that will be economically worth fixing, or should I just look into buying a new mower?

Thanks for taking the time to read this and I look forward to any wisdom and advice you can share.

Doc

 

The gasoline left in your mower from last year or when ever has done a number to the inside of the carburetor.Since the gas has been in their long to evaporate,I would not be suprized if there is white powder all inside it.And you might have to replace it.

But the solution to your problem is going to be ether soak it in carburetor dip type cleaner,or replace it with a new one,depending on how bad it really looks inside you might have to soak it anywhere from 45 min. to 2 days.And sometimes they just wont come clean enough.

 

Furthermore, if you post back with the engine model, type and code numbers I can provide you with a list of needs/likely needs you'll want to purchase from a Briggs dealer. Also, I recommend using Napa # 6402, bath cleaner and Briggs # 100042, spray cleaner as well as compressed air to perform a good carburetor reconditioning. Another new air filter is likely needed since it probably got soaked with gasoline and this will render it useless.

 

Thanks for the information and ideas, repair_guy and puey61. I'm not all that mechanical, but with your information and a B&S book I just found at the local library, I think I'll be able to get this done and done correctly.

Puey, as for the information you requested, I assume these are the numbers stamped on the plate along the side of the engine, if not, please let me know what other numbers I need to look for and I'll post those ASAP. For now, here's what I've found:

Model: 120802
Type: 0204B1
Code: 02030256

Thanks again for your quick responses, and I look forward to learning more from you all as this adventure progresses.

Doc

 

BUMPing it up!

 

Woh, sorry I must have been sleeping, forgot to get back to you. Recheck your ID numbers, there's no such model (120802)!

 

Puey61 ... since you said that the group of numbers I posted weren't the ones you needed, I've searched this lawn mower from top to bottom and the following numbers and information is all that I can find. These are the only ones left on and around the engine area.

Model: 12A-526L062
Serial: 1C132K30335

Family: YBSXS.1901VC . 274466

This is for a Briggs and Stratton Quantum 6.25hp engine.

I really appreciate your help on all of this.

Doc

 

No, no, you were on the right track already, you just need to clarify the engine ID numbers. I can find no 120802 model with a 0204 type number. I do see a 12Q802 with this type number so I need you to have a closer look at the engine ID numbers (which you've previously posted, just not quite correct) and see if the "0" is actually a "Q". This is somewhat critical so that I can get you acurate information.

 

Okay ... got the old magnifying glass out and it was a "Q" and not a zero.

So ... here is that information you requested written as it appears on my engine.

12Q802 - 0204 - B1

02030256



Hope I got these right this time.

And .... I look forward to your kind help and information on all of this.


Doc

 

Bump It Up !!!!

 

Sorry again, Doc. Along with the above noted bath and spray cleaners, you'll want to get the following Briggs parts: 498260, carb kit; 694395, primer bulb (if needed); 1/4" ID fuel line and two new clamps for such; 491588S, air filter; And, 493537S, pre-filter. Soak the carburetor, spray it off with the spray, blow it out with compressed air (only if available, otherwise let the spray cleaner evaporate well), install the kit, replace the primer bulb (again, if needed), flush (drain) out the fuel tank, replace the fuel line and clamps, reassemble the carburetor to the engine, install the air cleaner components and give it a rip. Good luck and let us know how it goes.

 

Thanks puey!! I'll be doing everything you've suggested sometime this week. I'll keep you posted on the progress.

Thanks again for taking the time to put me on the right path.

Doc

 

Alrighty then, i'll be on the lookout for your next post.

 

Puey .... You are da' Man!!!

Followed your instructions to the letter and it cranked up on the second pull. Spent about $27 total to get it up and running and it runs like brand new again.

I'm so glad I found this site .... and I cannot thank you enough.

Thank you ... Thank You .... THANK YOU!!!

All of the best to you and yours.

Doc

 

I have a Craftsman Quantum 6.0 Hp, I have the same numbers as shown here (ybsxs.1901vc 274466) & my Briggs & Stratton number is: 122K02-2329-E1 for this model if this helps