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I have a murray 42 inch with a 15.5 briggs engine my engine is running up and down popping out of the intake i rebuilt the carb checked coil and plug gap i tried to adjust governer it helped some it w

I,m thinking it might be valve related by the popping back when i put a new main jet in there is a tiny black oring that i couldnt see where it was supposed to go btw the engine model # is 282h07-0196-e1

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  • Tim Brown
    Tim Brown Oct 25, 2012

    i replaced the flywheel key and tourqed the flywheel to specs

  • Tim Brown
    Tim Brown Oct 25, 2012

    i need a blow up of the nikki carb

  • Tim Brown
    Tim Brown Oct 28, 2012

    got it running like a new one intake valve was out of adjustment


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Besides the missing o-ring from the carb which is probably important. The words 'popping out the intake' made me think 'flywheel key'.

Posted on Oct 25, 2012

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Posted on Jan 02, 2017

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SOURCE: Weird under load symptom briggs 17.5

a couple other checks would be to dump the carb resevoir where the float is, water under the float could be accumulated and closing the fuel off, due to density. out here on the farm we never use the gas to the last drop from the can. also the linkage between the motor fan blade, (govenor) might have been connected to the carb incorrectly. or a bad switch interlock on the mower blade.
some briggs motors are hooked wrong straight from the factory, where the throttle linkage is concerned. ( and the little spring is pretty hokey too)

Posted on May 17, 2009

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SOURCE: briggs and stratton engine smoking

if your oil level is to high it will do this. i would drain and refill the oil to oem specs slowly as not to overfill so it doesn't blow over the top of the piston.hope this helps

Posted on Jun 25, 2009

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SOURCE: Hello,I have a briggs 13.5hp I/C ohv single

sounds like you you have bad gas and a air leak

Posted on Oct 01, 2009

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SOURCE: Craftsman 17.5 hp 42 in. Deck Lawn Tractor. Runs

It doesnt sound normal.Thank you for asking and I hope this helps you.Please leave me a 4 thumbs up.

Posted on Jul 20, 2010

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SOURCE: 2005 model Murray 42 " cut with 15 hp OHV engine.

Oh yes they were right !! This happened to my unit last summer, those intake and exhaust have to at least checked every time you tune up so for most that is a seasonal check to keep everything in check.The magnet inside mine got ripped off the inside wall of starter casing. Go to they have a video for this and all you have to do is find out the gap numbers, that local repair shop of yours will be happy to give you those numbers. Now get er done!! Good Luck....

Posted on Mar 12, 2011

Testimonial: " I am used to the old type engines and never thought of adjusting valves. The repair shop said the would do it for $32.50 and show me how. Thanks ;-)"

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Toro Timecutter 14.38Z Model 74301 Briggs & Stratton Engine Model 280H07-0166-E1 Has NIKKI carb Starts & runs for ~ 15 minutes then stops. Will restart after 5 minutes rest and run...

Recheck spark when the unit cuts out. I am gonna guess you spent a lto of money chasing a bad coil! When a coil starts to go bad they become temperature sensitive. Time does the rest!

Dec 27, 2012 | Garden

1 Answer

Motor stalls after 15 minutes of cutting on my murray 17.5 ohv 42 inch riding mower

plug needs replacing, im guessing that it restarts when it cools down.
also check the oil level. it has a low oil cut out. but my money is on the plug or coil

Jul 14, 2012 | Briggs & Stratton Garden

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8 hp briggs will not stay running, runs for 10 minutes then dies

Check the valve clearance .. intake should be .006. - .008 ex .008 - .010 check for loose valve seats . ....

Jun 11, 2017 | Briggs & Stratton Measuring Tools &...

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I got a poulan po1742stb riding mower with a 17 hp briggs n stratton engine it was my dads and it hadnt cranked since he died which was bout 2 years ago so i had to replace the ignition coil and my wiring...

Thanks for stopping by...
When you said "cleaned the carb" - did you disassemble, and clean - or just spray carb cleaner into it?

Sitting for 2 years - the additives in the gasoline can leave a varnish that will clog the tiny jet orifice in the carb bowl.

You'll need to disassemble, and clean out the jet with a wire.

Popping and sputtering can be caused by a few things:

Old Gas - drain and refill with fresh.
Dirty Air Filter - Check and clean/replace it.
Poor Fuel mix/ratio - clogged Carb Jet or sticky butterfly.
Poor Spark - check/change the plug.
Fuel Vaccuum - remove the gascap - and start... the vent hole may be clogged. Clean and/or replace it if it starts running better with the gas cap off.
Clogged Fuel Filter/inlet screen - backflush the tank and the debris should wash back into the tank. Rinse out and re-install.

This is most likely a fuel delivery or spark issue.

Change the fuel and plug first... and give the carb a GOOD cleaning... then re-check.


Sep 22, 2011 | Poulan 42-Inch Steel Deck 17.5 HP Briggs &...

1 Answer

Rebuilt the carburator.Now when you run the starter it fires through the carburator.

Usually means a lean carburator condition. If an adjustment screw is available, turn counter clockwise a 1/4 turn at a time. Check carb to engine gasket-if missing or broken an air leak will cause a lean condition. It could also be a bad intake valve, timing problem, bad spark plug, bad coil, or bent or broken flywheel key.

Jun 15, 2011 | Briggs & Stratton Garden

2 Answers

I have a murray 17.5 hp 42 inch cut riding lawn mower. The engine is a 17.5 Tecumseh o/h valve. It seems it is not getting fire. I replaced the spark plug and tried holding the plug close to the engine...

Had the same problem and it turned out to be a fried coil. You need to remove the engine top cowling to get to this. On mine, a mouse had built a nest all around my coil (Very common) and, come summer when I used the mower, it toasted the coil. Just a thought. Good luck!

May 06, 2011 | Briggs & Stratton Garden

1 Answer

Gas coming out of exhaust is it the carburetor and why

carb. float stuck open
Need to remove carb. replace float needle valve and possibly the needle valve seat,
change your oil also
saturated with fuel

May 23, 2009 | Poulan 42-Inch Steel Deck 17.5 HP Briggs &...

1 Answer

Sears 19 hp twin 42 inch tractor, won't start if hot

Two things come to mind. First it could be not getting enough fuel when hot due to carb adjustment being too lean. That could be that the float level in the carb is set too low or the low speed jet is set too lean. When cold the choke circuit in the carb supplies the extra fuel required.
Second in some enjines that have low compression they start cold but when hot the compression drops below 60 psi and makes starting very difficult until engine cools down.
I suspect a fuel problem.

Nov 25, 2008 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

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