SENIX

SENIX 20" 4QL® 49cc 4-Cycle 18" Gas Chainsaw

|57 ratings
Item # 990484267
Current price is $149.97
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Columbus, 43215
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Smart summary

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  • Powerful 4-Cycle Engine: Powered by a high-performance 49cc 4-cycle full crank engine, this chainsaw delivers exceptional torque and cutting power with low vibration, eliminating the need to mix gas and oil.
  • Cleaner Operation: Engineered for environmental efficiency, it runs with lower emissions, produces less smoke, and offers reduced noise levels, ensuring a smoother and quieter operating experience than 2-stroke models.
  • Robust Cutting Bar: Features an 18-inch heavy-duty bar and chain, constructed with trusted components for achieving fast, clean, and precise cuts through hardwood, trees, and various tough yard debris.
  • Effortless Starting: Equipped with an Easy Start System that includes auto choke and compression release technology, enabling convenient and reliable starting under diverse operating conditions.
  • Operator Safety: Designed with essential safety features including automatic chain lubrication for continuous performance and a kickback chain brake to protect the user during operation.
senix 20" 4ql® 49cc 4-cycle 18" gas chainsaw 3/4 profile showing an 18" black heavy-duty bar and chain with white SENIX marking, gray-blue engine housing with exposed cylinder head, black wraparound front and rear handles with integrated throttle, orange choke/primer controls, visible chain brake lever and metal starter housing on a white background; suitable for cutting firewood and storm cleanup.
SENIX 20" 4QL® 49cc 4-Cycle 18" Gas Chainsaw
Hero image 0 of SENIX 20" 4QL® 49cc 4-Cycle 18" Gas Chainsaw, 0 of 13

About this item

Product details

The SENIX CS4QL-L1 49cc Gas Chainsaw delivers serious cutting power without the mess of mixing fuel. Its high-performance 4-cycle engine gives you more torque, less smoke, and lower emissions than traditional 2-stroke chainsaws — all while running quieter and smoother. Whether you’re cutting firewood, clearing storm damage, or tackling weekend yard work, the 18" slices through hardwood with precision and speed. Engineered for both performance and safety, the CS4QL-L1 49cc gas chainsaw features automatic chain lubrication, easy-pull starting, and a kickback chain brake to protect you while you work. If you want pro-grade performance without pro-grade headaches, this is your chainsaw. All SENIX 4QL gas powered chainsaws are backed by our 2-year limited warranty for your peace of mind.
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Specifications

  • Automatic Chain Oiler — Ensures consistent lubrication for smooth cutting and extended chain life.
  • Chain Brake Safety System — Instantly stops the chain during kickback for enhanced user protection.
  • Includes Bar Cover and Tool Kit— Comes fully equipped and ready for action right out of the box.
  • 2-Year Limited Warranty — Provides peace of mind with reliable support and long-term durability.

Member ratings & reviews

4.4 out of 5 stars
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57 ratings57 reviews
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  1. 5 stars65% (37)
  2. 4 stars23% (13)
  3. 3 stars4% (2)
  4. 2 stars2% (1)
  5. 1 star7% (4)
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Showing 1-3 of 57 reviews

May 23, 2026
Reviewer name: Robert
5 out of 5 stars
5 out of 5 stars review

Best bang for the Buck !!

Leary because of price point, but I only needed a saw for home use. I had a 70 foot tree cut down and they left me with some very large pieces that needed to be cut to fireplace size. Ordered the SENIX 20 18" four stoke motor, added gas, chain oil and the engine oil that came with the saw. Fired up and cut for 3 hours straight, did not faulter!! idled great without shutting off, easy to handle and lightweight. I would recommend this a to everyone needing a light duty big saw. Cleaned it up, put in the box and its ready for the next job.

Helpful?5K5QDROCMWFC18839409213
Jul 26, 2026
Reviewer name: anonymous
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

4-cycle / electric / 2 cycle chain saws

Ran good, didn't need to prime according to the instructions, that flooded the spark plug. Went through two tanks of gas cutting 16" to 24 " diameter trees. Bogged done a bit on full 16" cut due to the bumper spikes. could have used 5 to 8 more CC's of engine. Definitely like it better than the electric for power and cutting speed. Hands down much better than getting my Stlh or Poulan 2 cycle chain saws started.

Review from walmart.com
Helpful?5K5QDROCMWFC18839409213
Jun 17, 2026
Reviewer name: Jack
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

decent but not great

Decent little chainsaw for the price. I thought the 4-cycle would be less tempermental to start, but this often takes several pulls. as expected, it makes less power than a 2-cycpe of the same displacement. The power it puts out would be better for a 16 inch bar, or maybe an 18" low kickback chain (it came with a full-chisel). The saw stalls on me when cutting big oak unless I go very lightly, that is why I say it is underpowered. To get five stars it would have needed to start first pull after priming, and have either more power or a bar and chain better matched to the power it does have. To be fair, my other saw is a 94cc clone of a Stihl 660, so this was bound to seem weak. But it is a decent backup saw for my ranch and would be just fine for a suburban homeowner.

Review from walmart.com
Helpful?5K5QDROCMWFC18839409213

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