#TB4SC 25CC 4-Cycle Gas Blower

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 air filter could be blocked.

A common problem that could be keeping your leaf blower from starting is a blocked air filter. Clogged air filters cause the blower`s engine to receive too much fuel and not enough air, which often leads to a faulty start (or no start at all).

If your leaf blower engine is lacking power, it could be due to a blocked air filter. A plugged air filter will restrict air flow into the engine, reducing power and performance. Changing the air filter is an easy fix, and should solve this issue.
Loss of spark is caused by anything that prevents coil voltage from jumping the electrode gap at the end of the spark plug. This includes worn, fouled or damaged spark plugs, bad plug wires or a cracked distributor cap.
If no spark appears, check for broken wires, shorts, grounds or a defective stop switch. Once you have confirmed that the stop switch is working, reconnect the spark plug lead.
The engine misfires or runs rough. The engine starts, but stalls shortly after. There is a noticeable increase in fuel consumption during normal equipment use. The spark plug itself appears damaged or corroded with carbon build-up or rust.
Replace the spark plug with a new one at the start of fall or after every 25 hours of use, whichever comes first.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

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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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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I have a pb-251. replaced carb, air filter, hoses, spark plug and cleaned spark arrestor. start easily. runs fine for 2 minutes and then stalls if I give it the gas but will idle all day long.
ANSWER : Loosen gas cap. Probably a bad Vent in the gas cap

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It will not start and has no spark. I pulled the plug and let it hang and had no spark. I did the same thing with a spark plug and still no change. Can anyone help me
ANSWER : First of all- your methods of testing spark are … unsatisfactory.
You need a spark tester and a good unit ground to determine the condition of the module.
For preliminary tests the spark plug needs to be grounded. Insert the plug into the spark plug boot and make sure there is a good connection and make sure the plug is grounded by touching the threaded part of the spark plug to a solid engine component. Usually the cooling fins of the cylinder or head. Once the plug is grounded proplerly then pull the rope and check for fire.
Once you are satisfied that there is no spark then unplug the ground wire from the module and check for spark again. If you have spark then its a switch or bad wire problem. If still no spark then replace the module.

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Spark plug chart
ANSWER : You sure you have the correct number

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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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No spark at spark plug and unit will not start
ANSWER : What kind of gear is it. is there an on off switch? could the wire from the switch be earthed because its worn thru?? check this and see. lets face it. no spark it wont run. try another plug too. sometimes thats the answer

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What is the spark plug gap on a homelite blower #08010
ANSWER : .030

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