used this, I hav 440 hrs on this mower.
Garden
Experienced gardeners share their insights in answering this question :
Usually,the valves have to hit the piston to cause this issue,or maybe a carbon build up on the pistons….can’t say much else,w/o seeing the parts ! sorry.
How to Identify and Fix Common Gardening Problems ?
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When measured on a cold engine using a feeler gauge, valve lash for the Briggs LO206 engine should be . 003-. 004 inches on both the intake and exhaust exhaust side.
One common cause of bent pushrods is engine overheating. When an engine becomes too hot, the metal components, including the pushrods, expand due to thermal expansion. If the engine exceeds its designed operating temperature, the pushrod may bend as it struggles to accommodate the increased length caused by expansion.
To adjust the valve clearance, slacken the locknut with a ring spanner and screw the ball in or out of the rocker a tiny amount, checking the clearance betwixt valve and rocker with feeler gauges. Once it`s correct, tighten the locknut and check again.
Valve Clearance Tips
Recommended valve-to-piston clearance is generally 0.080-inch minimum on the intake side and 0.100-inch minimum for the exhaust valve. The exhaust needs a little more clearance because it expands more with heat.
Too much clearance means the valves will likely clatter and, over the long term, cause damage to the valves, camshaft lobes or rocker arms. If there`s too little valve clearance, the valves won`t fully close, causing excessive heat, and the engine will lose power.
Check – Slip the gauge blade between the rocker arm and valve tip. Move the gauge forward and back and feel the resistance. If you feel a nice amount of resistance, meaning, the gauge is snug but does move when you push on it – Your good, no need to adjust this valve. If you don`t feel any resistance, start adjusting.
To perform the procedure rotate the engine by hand, as soon as you see the exhaust valve begin to open adjust the intake valve. Once adjusted continue to rotate the engine until the intake valve opens entirely and just begins to close, now adjust your exhaust valve. That cylinder is now complete.
Use a ring spanner to loosen the locknut and turn the screw clockwise to decrease the gap, and the opposite way to increase it. When the clearance is correct, hold the screw with a screwdriver while you tighten the locknut, then re-check the clearance. There may be a self-locking adjusting screw with no locknut.
Discover Relevant Questions and Answers for Your Specific Issue
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Wshat is the valve clearence for a 24 hp briggs and stratton engine model 446677 type 0470E1 code 050405yh
ANSWER : About a mm or .004″.
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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?
ANSWER : 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
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Can you put synthetic oil in a briggs and stratton motors
ANSWER : Every time i tried they started to leak
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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
ANSWER : 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.
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Craftsman riding mower lt-1000 leaks gas – Craftsman 17.5 hp 42 in. Deck Lawn Tractor – CA Model
ANSWER : Need to fix that. it may be a fire hazard.
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Have a Craftsman 26 hp, 48″ mower…mower starts runs but when I try to engage the blades nothing happens. Checked all the belts, ck for blockage but nothing…what would the next step be?? Tks
ANSWER : When you say nothing happens…is the PTO engaging? You said that you already checked the belts…if none of these are off…you maybe looking at a new PTO clutch.www.nnyparts.com
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I have a 1987 craftsman riding 17 horse mower. I
ANSWER : Smoke is fine as long as you keep adding oil!!! Rings are worn,,,
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Oil quanity I have 20 hp craftsman briggs and stratton twin how much oil when you change out oil
ANSWER : Usually 1 qt
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