Garden

I have a stihl back pack. A BR 420C Magnum leaf blower. I replaced the air filter but am still flooding the motor. The spark plug keeps getting soaked with gas. It is a rope pull starter. What do I have to do to get it started?
Experienced gardeners share their insights in answering this question :
To start: turn the choke off, hold the throttle wide open and crank. You have a carb problem but this should get you going. JohnPlease rate if this helps-

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Flooding is when the air and gas mixture inside the carburetor has become too rich to light. The reaction from burning fuel is what produces the power to blow the leaves.
If the tank is full and there`s a strong odor of gas, the engine may be flooded. Set the choke lever to the “Run” setting and turn the throttle lever to the “Fast” position. Then pull the cord until the engine finally starts.
To fix a flooded engine, you basically want to get the air to fuel ratio back to its usual balance. You can first try to simply let the excess fuel evaporate. Open your hood and wait a couple minutes before you try to start your car again. And when you do start it back up, make sure you aren`t pushing on the gas pedal.
Maintenance of gas powered leaf blowers produces toxic waste like fuel filters and contaminated air filters. Blowers erode, compact and dry out soil and harm plants, microorganisms and pollinators.
Maintenance of gas powered leaf blowers produces toxic waste like fuel filters and contaminated air filters. Blowers erode, compact and dry out soil and harm plants, microorganisms and pollinators.
Damp, Wet Or Soaked Through

There is a difference. If the leaves are damp then it shouldn`t be a problem, a little wet with a powerful jet will still work well but if leaves are soaked then best to leave well alone until they have had time to dry a little.

Maintenance of gas powered leaf blowers produces toxic waste like fuel filters and contaminated air filters. Blowers erode, compact and dry out soil and harm plants, microorganisms and pollinators.
Flooding is often due to over use of the choke. Once fuel has accumulated in the crankcase it may take some time and effort to clear it. *2-stroke, cold starting procedure: Apply choke > crank engine until you hear a `pop` from the exhaust > fully open the choke > continue cranking until engine starts.
As the idle speed goes down, the fuel pump, which is driven by the engine, doesn`t send as much fuel to the engine. That means the motor leans out slightly, increasing the RPM. “It`s that constant hunting back and forth between rich and lean that causes the blower surge,” adds Hayes.

Discover Relevant Questions and Answers for Your Specific Issue

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I recently tuned up my blower. It starts great but if I turn it off Nd try to restart it it floods and will not start until I let it sit for awhile.
ANSWER : If the engine is warm and you shut it down, leave the choke off, lower the revs and start it. (when the choke is wide open you are using the fresh air coming in to dry the spark plugs and prevent flooding). If the motor is already flooded use that procedure to dry the plugs, then go back to full choke until it tries to start and quits again, then use half choke and pull one more time… works all the time.

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Started PB620-ST yesterday with some difficulty. However, ran until fuel empty. Refueled today, but will not start. Spark at plug ok. Fuel flowing, but seems to overflow into air filter compartment. Does not seem to “fire” at all.
ANSWER : Sounds like your flooding the engine; I did the same thing. Wait a while to let the gas drain back to the tank. Use your primer bulb once and your choke for only ONE pull; then shut off the choke. Pull start without the choke 2-3 times and it should start.

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Poulan gas blower 30 c back pack blower ran fine stoped will not start no spark
ANSWER : Check switch is bad if not coil bad if not getting spark

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Starts runs a couple of minutes then dies – Echo Gas Blower 135 MPH390 CFM Blower PB250
ANSWER : It
sounds like you have a bad Ignition Coil (Module). This is how they act
when they start going bad. When they get warm, they quit. Some will
last up to 20 minutes before they shut down. You can sometimes find a
used one pretty cheap at a small engine shop.Jim

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My toro 2450 keeps bogging done after 10 min. Fuel is new and just changed spark plug. Any suggestions?
ANSWER : Could be stuff inside the float bowl holding the float OPEN and flooding it. That IS a weird symptom. Possible coil failure.Is there spark after it dies? Will it re-start? Was the spark plug wet with fuel?

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I have an Echo PB251 Handheld Leaf Blower that I just installed a new carburetor on and it still won’t start – WHY?
ANSWER : Spark arrest in muffler could be clogged. Remove muffler and clean.

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Blower won’t start and seems to flood out easily. Used it for one season and put away for winter. hasn’t run since.
ANSWER : Needle seems to be stuck or thr diaphram is stiff and not closing off against the plate for the fuel

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While running blower starts dying down in power going up and bown and cuts off
ANSWER : I wonder if it is starting to seize. Have you been using cheap ethanol gas. Or have you done research online for gas stations that sell real gas? If you don’t use real gas on a 2 stroke engine it will over heat and eventually burn the valve and cause distortion all over. It will eventually seize.http://pure-gas.org/

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