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
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SENIX

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

|61 ratings
Item # 990484267

Smart summary

Generated by AI
  • 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.

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.
Current price is $149.97
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Free for Plus on eligible orders over $50
Columbus, 43215
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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

4.3 out of 5 stars
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61 ratings61 reviews
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  1. 5 stars64% (39)
  2. 4 stars23% (14)
  3. 3 stars3% (2)
  4. 2 stars3% (2)
  5. 1 star7% (4)
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Showing 1-3 of 61 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
Sep 18, 2026
Reviewer name: Boni Banye
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Mazi

This Senix chain saw works like a charm. It works as prescribed if only people follow the rules. This four trike engine makes life a lot easier. The power is just enough for an average home owners use..Many people may say that it would not start. But if you read the quick start manual follow the instructions it will surely start. Prime it t ten times pull the chocke out completely then push it back pull back the safety lever pull the starter five or six times the machine will start.

Review from Walmart.ca
Helpful?5K5QDROCMWFC18839409213
Oct 3, 2026
Reviewer name: Louis
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Best Chainsaw

Absolutely the best chainsaw ive ever built, was initially hard to start but that is due to the outstanding compression of the engine after first use it starts on 1st pull every time, have allready cut up over 10 cords of wood and she runs like a dream.

Review from walmart.com
Helpful?5K5QDROCMWFC18839409213
Current price is $149.97
Prices may vary in club and online
How do you want your item?

Shipping

Free for Plus on eligible orders over $50
Columbus, 43215
Return or replace anytime.

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