When I first got the mower the engine would hunt up and down as well as backfire through the exhaust and carburetor only between half to full throttle. I removed and cleaned the carburetor and adjusted the valves. It ran the same way. I adjusted the governor as follows: loosened lock nut, moved the arm so throttle was at wide open, turned shaft in same direction, held arm and shaft in position and tightened lock nut. The engine now idles at a extremely high rpm and will not idle down at all with the throttle cable. If I push the governor arm the opposite way the rpm decreases. I adjusted the g
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Did you do anything with the jets or the needle valve
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The most common reason for a surging lawn mower engine is a blockage in the fuel supply, but there are other possibilities: Bad gas. Bad spark plug. Dirty/faulty carburetor.
If the engine will idle but dies at full throttle the main jet in the carburetor may be plugged. You can repair a plugged main jet by cleaning it, replacing the jet, or replacing the carburetor. If you choose to clean or replace the main jet, you will also want to clean the rest of the carburetor.
Stale fuel, dirt, and debris are the most common cause of outdoor power equipment not starting or running properly. If you store equipment with untreated gas in the tank, it can lead to engine damage.
The acceptable operating speed range is 1800 to 3600 RPM. Idle speed is 1750 RPM. The manufacturer of the equipment on which the engine is used, specifies the top governed no load speed at which the engine may be operated. DO NOT EXCEED this speed.
The main reasons for an Engine Surge at Low RPM are Air, Fuel, Spark, and Compression which can be detected by the below indicators: Dirty or faulty mass airflow sensor. Clogged or dirty fuel injectors. Faulty spark plugs or ignition coils.
Loose, Dirty or Disconnected Spark Plug in Your Lawn Mower: Check it out, clean off debris, re-connect and tighten. Dirty Air Filter: Clean or replace. Fuel Not Reaching the Engine: Tap the side of the carburetor to help the flow of gas. If this doesn`t work, you might need a new fuel filter.
Lawn mower surging is a result of either bad gas or spark plug, dirty air filter, or clogged gas cap vent. A dirty carburetor jet and fuel filter might also be the reason. You can also consider a carburetor gasket leak, which can be fixed by an engine starter spray.
The mower surges when the carburetor sucks air through an unsealed gap in the air intake manifold instead of through the air filter. Dirty carburetor. Clogged fuel jets inside the carburetor commonly cause the lawn mower engine to surge. Clogged jets can`t provide the right mix of air and fuel to the engine.
Clogged or Dirty Air Filters
It is one of the most common problems that cause lawnmowers to sputter. The mowers take the air from the surrounding through air filters and mix it with fuel inside the engine. So, if the air filter is clogged or dirty, it will affect the flow of air into the carburetor.
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How do I remove and clean air filter? – Briggs & Stratton Lawn-Boy 10640 20-Inch 6.5 HP Gas Powered Lawn Mower
There should be a square of plastic on the side of the engine which is opposite of the muffler. It has a small hex head with a slot cut in it. Remove this plastic cover and the air cleaner should be inside of it.
Oil quanity I have 20 hp craftsman briggs and stratton twin how much oil when you change out oil
Wshat is the valve clearence for a 24 hp briggs and stratton engine model 446677 type 0470E1 code 050405yh
About a mm or .004″.
17 HP Briggs & Str lawn mower engine that is smoking a lot –
Compression test it can either rent or buy one should be over 90psi!!!
I have a 12.5 Briggs & Stratton and I can not get the timing marks on the crankshaft and cam gear to line up when the piston is at top dead center.
Timing on briggs is piston past tdc by 6mm….also see if you are 360deg out?
My 24hp Briggs and Stratton ohv engine has bent push rods on one side. The top valve can be pushed in but the bottom one will not push in. Is the valve stuck in the open position? If so how can it be fixed?
Unable to answer if valve opened or not but does sound like ur bottom valve is bent or piston made contact and bent it to fix need to remove head and replace valve also need to inspect piston face is not damaged from possible contact
42′ Poulan 20 hp-I was mowing & there was a loud pop,mower ideled down & quit. It will turn over but won’t start.
Check compression, should be over 90psi to start. And check spark. The loud pop I am going to assume came from the exhaust, which if you lost spark would cause excess gas to ignite. Causes of no spark, bad coil, or defective and or damaged safty swith.
How many cycles is a 6.25 hp Briggs & Stratton engine ?