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SENIX

SENIX 49 cc Gas Leaf Blower, 4-Cycle Backpack Leaf Blower,Up to 600 CFM and 200 MPH, Variable Speed & Cruise Control, 18N Powerful Blowing Force (BLB4QL-M)

  • Based on 19 reviews
Condition: New
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Availability: In Stock.
Fulfilled by SENIX Tools
Arrives Monday, Jun 29
Order within 18 hours and 10 minutes
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Style: 49CC-600CFM Backpack Blower


Features

  • High-efficiency CleaningThe SENIX 49cc 4-cycle backpack gasoline leaf blower can handle any cleaning project. With airflow and wind speed reaching up to 600 CFM/200 MPH, the 18N blowing force makes it easy to handle fall leaf cleanup or everyday yard debris, trash, lawn, and trimmings.
  • Powerful Low-Emission EngineThe 4QL four-stroke full crankshaft engine delivers powerful performance with low vibration, ideal for extended use. 4QL technology achieves low emissions and fuel consumption, minimizing environmental impact.
  • Simple OperationThe variable-speed throttle with cruise control function ensures easy operation; the patented 4QL technology engine does not require mixing gasoline and oil and supports all-direction use, ensuring the engine remains lubricated in any direction.
  • Ergonomic Backpack DesignThe gasoline leaf blower features a backpack design with ergonomic padded shoulder straps and a balanced frame structure for more comfort during use.
  • Package IncludedGas blower comes with 5.7 oz bottle of engine oil; This outdoor power tool is covered by a 3-year limited warranty for peace of mind.

Description

The SENIX 49cc 4-cycle backpack gasoline leaf blower can handle any cleaning project. With airflow and wind speed reaching up to 600 CFM/200 MPH, the 18N blowing force makes it easy to handle fall leaf cleanup or everyday yard debris, trash, lawn, and trimmings.

Brand: SENIX


Color: Black & Blue


Power Source: Gas Powered


Form Factor: Backpack


Special Feature: Adjustable Speed


Model Name: BLB4QL-M-001A-001


Style: 600 CFM Blower kit


Product Dimensions: 17"L x 20"W x 14"H


Manufacturer: SENIX


Power Source: Gas Powered


Form Factor: Backpack


Additional Features: Adjustable Speed


Color: Black & Blue


Style Name: 600 CFM Blower kit


Item Dimensions L x W x H: 17"L x 20"W x 14"H


Brand Name: SENIX


Model Name: BLB4QL-M-001A-001


Model Number: BLB4QL-M-001A-001


Manufacturer: SENIX


Manufacturer Part Number: BLB4QL-M-001A-001


Item Type Name: 4-Cycle Backpack Leaf Blower,Up to 600 CFM and 200 MPH, Variable Speed & Cruise Control, 18N Powerful Blowing Force (BLB4QL-M)


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jun 29

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Simple to setup, runs like a dream, sips fuel
Simple to setup, runs like a dream, took maybe 20 minutes to assemble. Added the included oil (nice bottle, I recommend keeping it for future oil fills). Added fuel to the tank, choked, primed 10 times as instructed, started on the fifth pull (they say to pull consitantly for the first 5, but on the last one, I gave it a solid pull and it fired right up). Great for a first run. I restarted it a few hours later. started on the first pull. Very low vibration, and light in weight, and it sips fuel. Best thing is, after an hour or more of use, I did not stink of two-cycle oil as I would have with a 2-stroke, and it has power to spare, It is one of the best blowers I have ever used. ... show more
Reviewed in the United States on May 2, 2026 by Bob Garber
    • Great blower, no regrets even though it can leak gas as others have mentioned.
I really like this blower. I was looking for a blower that was stronger than my corded blower so I could clear leaves faster. By CFM, this was maybe 50% more, but it is much faster to move leaves. For an area of leaves, it is probably 25% of the time it would take me to use my corded blower. It is not the highest CFM, but it really does a good job. I didn't want to mix oil and gas. I have been using ethanol-free gas. Out of 6 times using the blower, I have had the gas-leakage problem twice. The fuel return line is pretty short and pulls out of the gas tank. I have been trying to make sure it is pushed down into the gas tank as much as possible. If the hose was even 1/2" longer, it probably wouldn't slip out. I will try to check it before using each time. It is unfortunate that I have to consider what clothes I am wearing just in case it leaks gas. The blower starts very easily...no issues there. It is really a great purchase. I look forward to using it some more. ... show more
Reviewed in the United States on October 16, 2025 by JD
    • Don't buy cheap Chinese. Air fuel mixture isnt right. Cross threaded spark plug. List goes on. Don't buy cheap Chinese. Air fuel mixture isnt right. Cross threaded spark plug. List goes on.
Review Image by Mark
Review Image by Mark
Review Image by Mark
Build quality is 0 out of 10 plastic frame, straps keep falling out of plastic holes. 9 out of 10 for assembly, 2 out of 10 for running. First start was easy. Used for 10 minutes engine kept missfiring, had to feather throttle to ramp up rpm, if not would flood out and shut down, ate dinner went to start and took around 30 pulls and runs like crap. I am a mechanic but definitely bought it new didnt expect to start looking into repairs with less then a hour use. I probably will do wind speed test to see if it does as advertised All in all probably going to return it 12 hrs into running. It. Spark plug was cross threaded. Won't start after you ran for five minutes have to let sit for hours to be ambient temp to use again pic are my after math of berating failure im sick of Chinese mage cheap stuff that runs for the 1st time done expect much after. Watch whom your buying. Make sure its usa because the lax laws for China make products crap ... show more
Reviewed in the United States on August 20, 2025 Reviewed in the United States on August 20, 2025 by Mark
    • Would buy again. Great that it runs on pump gas
Great backpack blower and runs on pump gas. I don’t miss mixing fuel. I won’t buy another 2 cycle blower after this one. I’d buy this again
Reviewed in the United States on May 17, 2026 by Joshua Hughes
    • Great blower for the money, so far.
I got this on Black Friday and so far it's been a great leaf blower.
Reviewed in the United States on December 25, 2025 by Eric Z.
    • Great purchase
Great item I purchased this leave blower for and apartment complex that spans 2 blocks long and it does the job well
Reviewed in the United States on November 9, 2025 by Justine Harvey
    • Amazon A to Z team fell short of satisfaction!
Was informed by the A dto Z team that this did not qualify for replacement! So it is ok to sell a piece of equipment that was defective ( leaking gas all over the place ) call it good!! So the customer had to take it and have it completed and not leak fuel. Not Acceptable. I think Q C on the part of Senix fell short of being a completed product and had to be completed by the consumer. ... show more
Reviewed in the United States on October 10, 2025 by Very Satisfied Customer
    • Affordable
Love it, starts within the 3rd pull,
Reviewed in the United States on April 5, 2026 by cason dean londagin

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