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I recently change the blade on my mower and did not drain the oil prior to doing so , oil leaked everywhere now after the clean up and new spark plug and oil my mower wont start, how can i get it to start?

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Make sure the air filter is not plugged with oil. Remove the spark plug (gapped 0.020") and check for spark--it should be blue and snappy. Squirt some fuel or starting fluid in the plug hole and try for start. If it pops several times, check the carburetor and fuel supply. There is likely to be considerable smoke when it does start, but that will quit. Hope this helps!

Posted on Aug 05, 2010


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Servicing a briggs & stratton 35 classic

Clean exterior of engine and frame. Remove and sharpen blade. Clean blade compartment, scrap off old residue and wire brush. Repaint if necessary. Replace spark plug with new. Drain oil and replace with new - DO NOT OVERFILL!!. Replace air filter with new after cleaning filter compartment.

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Cant get 5.5 hp Briggs and stratton to start after cleaning out fuel lines tank and carburator changed plug it ran for a sec then died again what now

hello sir, mower will not start or run, does it have good spark,good compression,or only runs on full choke,engine surges up and down, are you getting fuel to the engine if not try this, your carb. is clogged up here is what you can do for a simple repair and other things if you want to, you will need a new air filter,spark plug, oil, if you want to a new blade also ,sears has a mini tune up kit that you can buy. now for the carb, empty fuel tank, place mower on side to where carb is facing up place a rag under carb to catch excess fuel,remove the bowl nut and bowl careful of the gaskets,now spray carb cleaner in the small port holes in the carb steam in the middle of the carb until clean,now spray the bowl nut holes until clean there are three,after cleaning put bowl on the same way you removed it with dip towards front of float,put bowl nut in, now while you have mower on side drain the oil remove filler cap to drain,put pan under spout,mower holds 21 o/z of 30 wt oil,you can remove blade to get sharpened or put new one on,to remove blade put a pair of vice grips on the body where the blade can stop and not turn it is usually a 9/16 or 1/2 socket, put blade on add oil,add new and fresh gas,you should be good to go,hope this helps,what i am telling you here is what i would do if it was here in the shop,any comments welcome,thank you.~~

Jan 22, 2012 | Mtd Garden

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Cannot get started after has started all summer changer spark plug and cleaned air filter Only problem is that also overfilled oil reservoir will that keep it from starting? If so how can i get some...

Hi pt--
If you are certain the oil is overfilled, then yes, this should be the problem. Single cylinder engines have little tolerance for excess oil in the crankcase. Since you're at it, you may as well change the oil in the mower while you have this all apart. In order to do this safely, be sure you have disconnected the spark plug wire from the top of the plug. You do not want the mower to start while you are under it. If you are unsure, ask someone who knows how to do this safely. You should also do this on a cool mower, as gasoline could leak from the tank or carburetor and pose a burning and fire risk. That said:

To change the oil on a single-cylinder lawnmower:
1) Gather materials.
--You'll need a pan or an old bucket to catch old oil, preferably one that has enough capacity for the old oil while also allowing the mower to be positioned with all four wheels on the ground.
--Some rags.
--A set of wrenches or a socket set.
--Two fresh quarts of new motor oil of the recommended viscosity for your particular lawnmower.
2) Disconnect the spark plug from the ignition wire. You'll see a cable running to the top of the spark plug. Grab it firmly at the boot that sits atop the plug and pull firmly. If it doesn't come off easily, be sure you are pulling at the right spot.
3) Tip the mower either backwards or on its side and look underneath the cutting deck. Be careful, as gasoline may spill from the engine's tank. You should see a small square-head or hex-head plug directly below some point of the engine. That is the engine's oil-drain plug. CAUTION: You may need to rotate the cutting blade to gain access to this plug. Be aware that the blade can cut you and that if the mower starts now it can cause serious injury to yourself.
4) Locate the correctly sized wrench or socket that mates to the drain plug.
5) Using a correctly sized wrench or socket, carefully and slowly loosen the drain plug until it turns freely by hand.
6) Position your drain pan beneath the engine's drain plug.
7) Unscrew the drain plug by hand until the oil drains free. Setting the mower down on level ground with all four wheels will ensure the most old oil drains from the engine at this point. Go ahead and open the engine's oil fil cap at this time, as this also allows the oil to drain freely.
8) When the oil has stopped draining from the engine--usually a slow drip is ok--you can replace the drain plug by hand. Be sure the plug turns freely by hand--do not crossthread the plug as you will create a costly repair for yourself.
9) Tighten the plug snug--NOT samson tight--with the correct wrench or socket and wipe any oil present at the plug or surrounding area clean with a rag.
10) Remove the pan from below the mower and rest your mower on all four wheels.
11) Slowly fill the mower's cranckase to full with fresh motor oil. Often, less than a single quart is necessary. Go slow and do not overfill.
12) Tilt the mower backwards again and check for oil leaks at the plug. You may need to snug up the oil drain plug one more time before the first after-oil-change start.
13) Lower the mower, reconnect the spark plug, and start the mower. Let it run for about a minute and listen to the mower for any "bad" sounds. If you hear anything out of the ordinary, shut off the mower immediately and recheck the mower for abnormalities.
14) Shut the mower off.
15) Check the oil level. You may have to top off the fluid level again, as running the engine tends to let the fluids settle out.
16) Disconnect the spark plug once more.
17) Tilt the mower and check the drain plug one more time for leaks. Snug it up as necessary.
18) Let the mower back down to the ground and reconnect the spark plug to the ignition wire.
You should be ready to mow again. Remember to be aware of any oil drips as push the mower around after a recent change--that may indicate the plug is leaking. There is a great picture of what a mower's drain plug looks like in the link below. Just scroll down to the part where you see the picture labeled 'oil drain plug.'
--Hope this helps, Joe.

Oct 10, 2010 | Poulan "" Push Mower

1 Answer

I have a 15.5 HP, Craftman lawn tractor. I'm having problem with it staying running. It will run just find for 20-30 minutes and then stop abruptly. I have changed the spark plug, oil, cleaned the air...


Check the Blade Safety Switch. Also check if the Carburettor requires a good cleaning and overhaul or not. After that check if there is any air leak or air in the fuel line.

Please accept the solution if it's helpful. Do get back to us for any further query.

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Sep 29, 2010 | Craftsman 42 in. Deck 19.5hp Lawn Tractor

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I recently changed the blade on my 22" Yard Machine push mower. It is a 22" blade. A bunch of oil spilled out of it when i turned it upside down and it was replaced. Now the chord on my mower is...

it will be o.k. theres just some oil in the combustion chamber making it hard to compress the air,when it starts there will be a lot of white smoke,thats just the oil in the cylinder burning away/off then you will be o.k.just make sure its close to the full mark before you start it and after you shut it off and it has set a while to drain back to the oil pan

Aug 04, 2010 | Mtd 22" Yard Machine Push Mower

1 Answer

How do you drain the oil and gas out of this mower mtd 22' 4hp and how do you change the spark plug? do you need any special tools/thank you soooo much natalie

Drain plug for the oil should be under the deck next to the blade shaft. Usually a plug with a square head on the bottom of the motor. Loosen the fill plug and then remove the drain plug. Any time you go under there make sure you disconnect the spark plug wire so no spark can jump.
Gas is another thing. No fuel line as carb is part of the tank, so only way to empty is to .....
1) tilt the mower over and pour out the gas. Good time to change the oil and do it before you add the new oil.
2) unbolt the tank from the motor and remove tank carb and all a single unit. Then turn it over and dump the fuel. there are only 2 bolts holding it on so after you remover the air filter you can see them easily. Just remember how the throttle linkage hooks on.

May 21, 2010 | Mtd 22" Yard Machine Push Mower

1 Answer

How to change oil in poulan 500 lawn mower

First remove the spark plug wire from the spark plug. Then tilt the handles down to the ground. It helps to have something you can slide the handles under or otherwise hold them down. Underneath the mower deck there will be a drain plug. You are in front of the unit facing it the drain plug will be at about 7-o'clock a few inches from the cranckshaft. It will have a square hole in it. Use an extension on a 3/8ths drive ratchet in the square hole and remove the plug. Be careful not to cut yourself on the blade, I usually remove the blade first and sharpen it while the oil is draining. Loosening the dipstick from the tube on top will help it drain faster. When its done draining replace the plug and reinstall the blade if it was removed. Then refill from the dipstick tube. The unit will take approx. 22 ounces of oil. Do not overfill.

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HELP, 2007 Toro walk behind mower

There is a drain plug on the block of the motor usually it looks square. if its not behind the blade on the under carriage, then it will be on top above the blades were the motor is visible. you may have to tip the mower on its side to completely drain all the oil. but the plug is always going to be on the motor either on the side or on the bottom. if the plug is on the bottom were the blade is remove the spark plug wire first. a mower can start if you turn the blade by hand and that would be vary bad news so always take the spark plug wire off and make sure it can not come in contact with the spark plug before going underneath the mower.

Jul 30, 2009 | Garden

3 Answers

Can't figure out how to change it or take it off for sharpening

you find the right size socket that fits it.(it: the bolt in the middle of the blade under the mower. Then hold the blade as you turn the socket wrench, sometimes this will be hard. this is how to do it

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