owing out volumes of black fumes and cutting out. How do I adjust the fuel mix?
Power Lawn Mower
Experienced gardeners share their insights in answering this question :
Replace the needle valve and seat check the float for fluid inside clean the jets
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An engine that will fire and run with the choke closed but dies when the choke is opened likely has debris at least partially blocking the fuel passages in the carburetor. In this condition the closed choke provides enough extra fuel to enter the engine to overcome the lack of fuel flowing through the other passages.
Why would the engine only run while the choke is on or with repeated manual priming? An engine that requires the choking (partial or full) after initial engine warm up is an indication that the engine fuel air mixture system is out of adjustment.
If the choke is left on for too long, excess fuel flows into the combustion chamber, causing it to seize up and stall. If this happens, the lawn mower will need to sit idle for several hours to allow the fuel to drain out of the chamber. Turn off the choke and try again later.
A dirty filter chokes off air to the engine making it hard to start so check to see if yours needs to be replaced. If you need a new filter be sure to use the original manufacturers part or the correct Toro replacement. These can often be purchased at your local Toro dealer or a home improvement store.
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.
A Dirty Carburetor Can Cause a Lawnmower To Start Then Die
By far, the most common issue that causes a stalled motor is a dirty carburetor. The carburetor on your engine is the thing that draws in air and mixes it with the fuel. Contrary to what the movies might make you think, gasoline itself is not very flammable.
Turn on the ignition of your car. Once the engine is warm, you can remove the air filter and check whether the choke is open or closed. At this point, the choke should be open to allow the engine to breathe fully.
If your lawn mower starts, runs briefly, then dies these are the four most common reasons that`s happening: Dirty carburetor / clogged carburetor bowl. Old gasoline that has gone bad. Dirty or defective spark plugs.
A dirty carburetor is the most common cause of a lawn mower that starts and then dies. Other possible causes include: Stale/Dirty Gas. Faulty Choke.
We do not recommend that any type of outdoor power equipment be operated after initial warm-up and with the choke control outside of the normal run position for longer than 5 minutes. Some engines utilize a manual fuel primer bulb to enrich the ratio of fuel in the fuel air mixture for initial engine starting.
Discover Relevant Questions and Answers for Your Specific Issue
the most relevant questions and answers related to your specific issue
I have a toro multicycler 650series power mower and it is like the choke is jammed on. running very rich, throttle not picking up properly, throwing out volumes of black fumes and cutting out. How do I adjust the fuel mix?
ANSWER : Replace the needle valve and seat check the float for fluid inside clean the jets
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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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Will not start turns over has spark the engine was running and killed and will not restart
ANSWER : If you have good fuel to the plug and a good spark and it still does not start it could be a timing issue, check the flywheel key has not sheared.
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Blowing oil out of the engine – Toro 52" 27hp Z Master Zero Turn Lawn Mower
ANSWER : Check oil level fuel could have flooded through into the engine oil which will cause it to blow out if so clean out carby and check that needle in the carby is sealing
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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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When I hold the bar down that engages the blade it will not cut?
ANSWER : Is the blade sharp?
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Mower wont keep running – Toro Lawn Mower With Toro Power Tools
ANSWER : Recycler toro 6hp. 10 years old,little usage. Starts then stops, have to keep priming. Can anyone help?
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Toro cutting off
ANSWER : Maybe low oil level, all mowers have a low oil cutoff. 30w oil.
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