21 In Classic Walk Behind Push Lawn Mower ()

Recently tuned up and it still starts very hard. has fresh fuel and spark plug. Air cleaner is clean. When running it sputters and engine takes a long time to get up to speed. After engine is warm you have to let it set for 15 minutes before it will start again
Experienced gardeners share their insights in answering this question :
If this model has the Tecumseh engine, you should have a primer button on it. These can go bad and the fuel lines also. Check to see when you prime it if fuel is flowing through the lines. If not replace the button and the fuel lines. Be sure to make a sketch of where the lines are hooked up.

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 :

Your Mower Won`t Start:

Other possible causes include: 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.

Disconnected, dirty or fouled spark plugs are common causes for engines that won`t start. For small engines, spark plugs typically need to be replaced every season or after 25 hours of use. You should also check to make sure the spark plug gap is set correctly.
Use Carburetor Cleaner

Fortunately, you can generally do this without even taking the carburetor out of the engine. Start by purchasing some commercial lawnmower carburetor cleanerOpens a new window, which comes in a simple spray can and will make it easy to clean the inside and outside of the carb.

If the riding mower makes a heavy clicking or a rapid clattering sound when the key is turned to the start position, there is a problem with the battery or a part of the starting circuit. The clicking noise comes from a part called the starter solenoid.
A dirty carburetor is one of the most common causes for a lawn mower not being able to start after sitting unused for months or years at a time.
A dirty carburetor is one of the most common causes for a lawn mower not being able to start after sitting unused for months or years at a time.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Does not run, will start with starting fluid – Mantis 2-Cycle Tiller
ANSWER : You should never use starting fluid on this model.

Add a couple of ounces of 100% acetone (available at Walmart) to some fresh fuel. Attempt to start for several pulls. Let sit for several minutes and repeat until it sounds like it wants to run.

Then watch this video and do it:

http://www.alamia.us/mantis_parts_s/148.htm

Sthl chain saw ground wire came loose
ANSWER : This might be some help. I dont quite know what you’re asking. If you know the problem then just replace it.

Ryobi problems cogs of the wheel wont engage, so trimmer teeth dont move.
the worm drive needs to be adjusted some how. how?
ANSWER : Sorry not to have better news. The plastic housing on that trimmer is not strong enough to support the drive gears. Ryobi has discontinued that model.

I have had mine apart several times. The housing for the gear cogs is plastic and flexes. I’ve tried to reinforce it and added spacers between the plastic housing and the bearings that support the drive shafts in attempt to force the teeth together. But the trick only lasts for a few minutes. As soon as I start to cut with it, it stops again. It’s just not worth the time, effort and frustration to continue working on it just to have it stop working again.

I finally discarded the Ryobi unit and purchased one with a metal (aluminum) housing. I think it is a Poulan Pro model from Walmart. It has worked well.

Why do I have hard time starting my ariens snowblower when cold?
ANSWER : Does it have a primer bulb been seeing a lot of the bulbs with cracks

I have a John Deere L118 Limited Edition (w/ 20 HP B&S engine), which I purchased about 8 years ago. It ran well with few problems up to late this summer. I believe the problem started when I accidentally filled the tank with some stale gasoline – the tractor turned over, but would not start. I drained the fuel tank and filled it with fresh gas, but it still would not start. When I use starter fluid, the tractor starts for 4-5 seconds, and then cuts off. I installed a new fuel filter. The connections in the fuel line seem tight, so while the problem might be the vacuum fuel pump itself, I do not think it is due to a leak in the line. I disconnected the fuel line at the carburetor — fuel flows through the line at start up. But when I put the fuel line directly into the air intake (with some starting fluid), the engine still cuts off in about 4 seconds. I am not sure if the pump simply is not drawing enough fuel into the carburetor. I understand that, if it is a problem with a safety cut-off, the engine would not start at all (even for 4 seconds). My thought was that the problem may be a gummed up carburetor, but that would not explain why the tractor does not start when I feed fuel directly into the carburetor. Any thoughts about other things I can try before bringing the tractor to a mechanic?
ANSWER : Just take the carb bowl off its easy one bolt on the bottom of it get the old gas out flush all old gas out of tank and line then it will run trust me i know

Strimmer wont start plug very dry when i remove it?
ANSWER : Sounds like the gas is not getting to the cylinder—remove carb and disassemble–make sure all jets are clear and the float valve moves freely.

Toro clear won't start – Toro Power Clear 621 R
ANSWER : Bad gas , plug ,air filter , no spark ck all need all 3 to start

Scag tiger cat wont start
ANSWER : I would put new plugs in change the oil put a new in line gas filter in. After this tune-up check for spark by leaving the plug out on the moter body crank it over if the spark is hot you know its a gas problem also check for any grounding by starting it at night then looking around to the engine to see if its grounding out. Try these simple things. Do not change anything on the moter without doing these things first. Good luck