is high pitch chirping sound. Any idea where I should be looking to solve.

Experienced gardeners share their insights in answering this question :
It sounds like a head gasket is blown,with the engine cold start it and spray water on each exhaust pipe,if one cylinder has a problem it will run cooler,the water will tell you which one is running cooler.Also you might want to clean the carburetor and check the fuel cap vent.

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

The LA105 is powered by a 19.5-horsepower Briggs & Stratton Anti-Vibration System (AVS) single-cylinder engine that hosts enough power to take on unpleasant mulching, mowing, and bagging conditions.
Replace dirty or clogged fuel filter. Replace old gas with fresh gas (properly dispose of old gas). Check oil level and add if low. Adjust cutting height of mower before cutting tall grass.
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.
This is NOT a hydrostatic transmission it is a 5 speed manual shift. GUARANTEED GOOD. Removed from John Deere D100 lawn tractor. I HAVE MANY USED LAWN AND GARDEN TRACTOR AND ZERO TURN MOWER PARTS OF MANY BRANDS OF MOWERS.
With a flow rate of 360 cubic meters (12,713 cubic feet) and a pressure of 5 bar, the pump is capable of moving a wide range of fluids, including water, acidic chemicals, wastewater, petroleum, oil, sludge, abrasive slurry, and food.
If the engine is low on power, it will bog down when you try to accelerate. This could be caused by a number of different issues, including low compression, a bad timing belt, sucking too much air, or even a head gasket leak.
You might have contaminated gas in the mower. Drain out the old gas. Change the fuel filter. Get new gas, non-ethanol if possible.
The John Deere LA105 was produced from 2008-2010 and came equipped with a gear drive transmission, 42″ Mower Deck and 19.5hp Briggs Engine.
Gear Model LA105

Ignition Module (Armature) Air Gap 0.253 – 0.356 mm (0.010 – 0.014 in.) Intake Valve Clearance 0.076 – 0.127 mm (0.003 – 0.005 in.) Exhaust Valve Clearance 0.13 – 0.18 mm (0.005 – 0.007 in.) Spark Plug-Gap 0.76 mm (0.030 in.)

Surging and Lagging

Another good indication that your spark plugs are dirty or worn is if your vehicle experiences surges of speed, resulting in a jerking acceleration. These surges occur because your spark plugs are not igniting the fuel in your engine at the proper rate, resulting in an uneven speed.

The John Deere LA105 was produced from 2008-2010 and came equipped with a gear drive transmission, 42″ Mower Deck and 19.5hp Briggs Engine.
You can find your engine model and serial number on the engine data plate. We need your engine serial number to quote a new engine for your piece of equipment. The engine data plate on a John Deere diesel engine can be found on or near the valve cover located at the top of the engine.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

I have a Poulan push mower that after mowing in a ditch started making a loud noise and running rough. It almost sounded as if metal was hitting metal. The mower was vibrating more than normal. I checked under the mower and nothing is hitting. After a few times of stopping the mower engine because it sound as if it is going to die down the mower will not start now. The shaft does not appear bent and the blade appears ok. The mower has oil, a good spark plug and a clean air filter. It was running fine until that moment. I did not see anything that I hit but it is possible I hit something in the ditch like a pine cone or branch. What could the problem be and how would I go about fixing it?
ANSWER : If you are sure the oil level is correct then it sounds like it’s about to die, unfortunately. A pine cone shouldn’t cause any damage, but a large branch may do so. Was it smoking before you shut it down? The vibration could be caused from a bent blade. It could also be caused from a part breaking in the motor. I wish I could have given you better news!

Good Luck,


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Lawn mower motor runs good, the drive wheels run good but the blade won’t stay enguaged. Thanks
ANSWER : Check your cable that controls the blade engagement.

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Lawn mower will start and run for 5 seconds and shut down
ANSWER : Will it stay running with your choke on? if so then clean your carb. if not then look for a blockage from tank to carb. ie fuel shut off, deteriorated fuel line. plugged filter etc

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42 inch mower cuts uneven, what is the problem?
ANSWER : Several things here could be the problem. Check to see if mower deck is level, measure distance on both side on a level surface. Check tire’s for low air. If you’ve replace the mandrel’s lately, some have a left & right side & if not put back together properly this will cause uneven cutting

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Carb problems wont stay running unless i unplug and plug in the anti diesel switch the plug on the fuel bowl
ANSWER : Check and see if all your carb jets or clean sound like some dirt got into one

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Uneven grass cutting
ANSWER : I have seen dull blades, blades not installed right and an un-level deck cause that.Hope this helps.

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Mtd 11a-54m7031 idles high – Mtd 22" Yard Machine Push Mower
ANSWER : Most new units only run at one speed. (So they can meet the EPA limits).

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After a rainny week, bad fuel developed in my fuel tank before I tryied to cut the grass. Now my mower runs high and low speeds and cuts out when cutting 6-8 inch grass. I am sure my curberator needs a good cleaning however, i am unaware of where it is. I have a gas tank and a prime button directly over it. Can you please help me locate the carburetor, resolove my issue, or both.
ANSWER : Yes, you are right, the carburetor does need cleaned. I’m send you a link to a video that will help you do this job: Good Luck!Jim

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