There is no evidence here of a controlled 2019 test that establishes one Dolmar chainsaw as the overall winner. The documented models instead fit different engine classes and workloads: the PS-421 is the smaller 42.4 cc option, the PS-5105 is a 50 cc mid-range saw, and the PS-6100 is a larger 61 cc model. Choose by the work you do, the saw’s weight and bar options, your experience, and access to compatible parts—not by an unsupported universal ranking.
What the available 2019 reviews can—and cannot—tell you
A secondary review index lists PS-6100 review entries dated 7 March 2019 and 17 December 2019, but it does not establish that the entries used a shared scoring method or formed part of a head-to-head test. Its ratings should not be combined into a comparative score or treated as a 2019 test result. Review index
A separate index identifies KWF report links for the PS-420, PS-4600, PS-5000, PS-5105 and PS-6100. It describes reports that address technical measures such as power, torque, consumption, sound, vibration, handling and maintenance. The underlying report contents are not available here, so those measures cannot be used to rank these saws. KWF report index
The specifications below come from model references, a hosted technical-specification page, a catalog copy and an operator manual—not a uniform independent test. They do not establish real-world starting effort, balance, cutting speed, vibration, reliability or value across the lineup.
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- Superior Performance: Gas powered chainsaw has excellent cutting performance. One pot of oil can cut down 80 tree with 30 inches. The 2.8 HP 2-Cycle engine can cut fast. Gas powered chainsaw is equipped with air injection technology, which the air cleaning system reduces maintenance for improved engine life
- Effortless Start-Up and Easy Handling: Spring-assisted pull handles are designed to minimize starting effort, which you can start the tool quickly and easily. And the gas chainsaw has an inertia-activated chain brake to reduce the likelihood of injury due to kickback
- Keep Your Safe: The trimming tool has a rotational speed of up to 23.2m/s. Handle protection protects your operation from splashing wood chips. We have also prepared earplugs & goggles & gloves for you to make your trimming process safer
- Power and Efficiency: NovorikX Gas chainsaw with 50-cc 2.8-HP, 2-Cycle engine is a powerful and professional outdoor garden tool. Our chain saw set with 13 pcs that can fully meet your cutting needs, Included 1*20" chain plate and chain, 1*18" chain plate and chain,a pair of earplugs, 1* knife covers, 1* oil bottle, 1* socket wrench, 1* screwdriver,1* sharpening knife, a pair of gloves, 1* goggles
- Customer Service: NovorikX's products have clear instructions. We offer【 FREE 30-DAY RETURNS AND 2-YEAR WARRANTY】. If you need warranty service, you can contact the store customer service, we will provide you with warranty information
How the three models compare on documented specifications
| Model | Documented engine and power | Weight and basis | Bar information | Documented positioning |
|---|---|---|---|---|
| Dolmar PS-421 | 42.4 cc two-stroke; 2.95 hp, according to a repair reference | 10.8 lb; measurement basis not stated in the reference | 16-inch bar; 3/8-inch chain pitch, according to the reference | Described by the repair reference as commercial-grade. Its model-number entry says it was superseded by EA4300FRDB. Repair reference |
| Dolmar PS-5105 | 50 cc; 2.8 kW (3.8 hp), according to a technical-specification page | 5.1 kg net weight; the page’s measurement basis beyond “net” is not stated | 16- and 18-inch standard bars; 20-inch optional bar, according to the specification page | A 2014 catalog describes it as a professional mid-range model for forestry, agriculture and tree-service organizations. This is catalog positioning, not a tested performance finding. Technical specifications · 2014 catalog |
| Dolmar PS-6100 | 61 cc; 4.5 hp at 10,000 rpm; maximum torque 3.7 Nm at 7,000 rpm, according to its operator and safety manual | 13.22 lb dry, without bar and chain, for PS-6100; the manual notes a configuration-specific weight for another variant | 18-, 20-, 21- and 24-inch cut-length options in the manual | The manual reserves it for exceptional cutting needs and calls for experience and specialized training; it also warns of severe kickback. Operator’s and Safety Manual |
These figures use different sources and weight definitions, so they are useful as model-specific reference points, not as a direct weight or performance test. Check the exact regional manual and saw configuration before relying on a specification.
Which Dolmar chainsaw suits your work?
PS-421: a smaller documented engine class
The PS-421 is the lowest-displacement model in this comparison, at 42.4 cc, with a documented 16-inch bar. That makes it the smaller specification-based option among these three—not proof that it is easiest to handle or best for a particular job. The repair reference lists a 0.48 L fuel tank and a 0.28 L oil tank, and identifies EA4300FRDB as the successor model number; it does not establish that the later model is identical to a PS-421 listing. Repair reference
Rank #2
- Husqvarna 445S 18 inch gas powered chainsaw delivers 20% faster cutting for increased efficiency and productivity* — recommended for use with bar lengths between 13 inches (min) and 20 inches (max)
- Effortless Start-Up: Smart Start allows this Husqvarna chainsaw to quickly and easily start up with minimal effort, while the gas chainsaw 18 inch blade has an inertia-activated chain brake to reduce the likelihood of injury due to kickback
- Superior Performance: Chainsaw gas powered with powerful and efficient 50-cc, 3-HP X-Torq engine maximizes power, even at low RPM's while included X-CUT chain delivers long-lasting sharpness and durability, making it a great gift for dad
- Optimized Cooling and Handling: Gas chain saw with reinforced, patented crankcase design that enhances cooling performance while slim-body design provides easier handling. This chainsaw is suitable as a gift for men who often work outdoors
- Comfortable Handling: Featuring LowVib technology that uses dampeners between the engine and chassis to reduce in-hand vibrations. These chainsaws make great Father's Day gifts
PS-5105: a 50 cc mid-range option
The PS-5105 sits between the other two by listed displacement and has standard 16- and 18-inch bars, with a 20-inch option in the technical specification. The 2014 catalog’s forestry, agriculture and tree-service description indicates intended market positioning; it should not be read as a claim about measured cutting performance. Confirm that a particular saw is configured for the bar you intend to use. Technical specifications · 2014 catalog
PS-6100: larger capacity with a serious safety warning
The PS-6100 has the largest listed engine here, at 61 cc, and the manual gives a range of cut lengths up to 24 inches. Larger displacement or a longer bar is not an automatic reason to choose it: the manual warns that the saw can cause severe kickback and says it is intended for exceptional cutting needs, experience and specialized training. Anyone without suitable experience should not treat it as a routine step up. Read the exact operator manual and obtain qualified training before operating it. Operator’s and Safety Manual
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Rank #3
- Safety upgrade:3D Anti-Kickback Chain Brake System
- Durability breakthrough:Forged Magnesium Crankcase
- Maintenance revolution:Tool-Free Chain Tensioning System
- Environmental certification:EPA Phase III & CARB Compliant Engine
- All-weather performance:Winterized Carburetor with Pre-Heating
What to check before choosing or buying
- Match the saw to the workload. Consider the type and size of the wood and how often you will use the saw. The available sources do not provide comparable cutting tests to translate engine size into a reliable ranking.
- Check the complete configuration. Confirm the model variant, bar length, chain specification and weight basis against the saw’s identification and regional documentation. A listed bar option does not establish that every bar or chain will fit every variant.
- Verify local parts and service support. The sources do not establish present-day availability of new saws, replacement parts or service. Check with a qualified local dealer or service provider before committing to an older model.
- Use the exact manual for maintenance and fuel. The PS-6100 manual lists a 50:1 fuel-to-oil ratio for specified oil types, names an NGK BPMR 7A spark plug, and says fuels with more than 10% ethanol are not approved for its two-stroke engine. These instructions apply to that manual’s model, not automatically to other Dolmar saws. Operator’s and Safety Manual
Verdict: choose by fit, not by an unsupported winner
On documented specifications alone, the PS-421 is the smaller option, the PS-5105 occupies the 50 cc middle class, and the PS-6100 is the largest of the three. The available material does not support naming a best Dolmar chainsaw for every user or claiming that one won a 2019 comparative test. Let workload, acceptable weight, suitable bar length, experience and verified local support determine the choice.
Quick Recap
Best Value
- Powerful Performance: This 62cc gas chainsaw features a 3.8 HP (2.8 kW) engine with a 12,000 rpm Max speed, making it ideal for home and professional logging. The 20 in (508 mm) guide bar cuts diameter up to 18 in (455 mm), efficiently handling thick trunks and large branches. If you encounter startup issues, please don’t hesitate to contact our customer service for assistance.
- Easy Start Function: Our 62cc chainsaw offers cold and hot start options, adapting to different working environments. Use the choke switch, start switch, and pull the rope to begin, quickly entering work mode.
- Emergency Stop for Security: The gas chain saw features an emergency stop function. Just press the stop lever, and the chainsaw will immediately cease operation. Additionally, the guard design effectively avoids wood chips from flying, ensuring your security.
- Adaptable to Outdoor Conditions: The PA6+30%GP composite body provides excellent impact-resistant ability and high-temperature durability. Whether in cold winter or hot summer, this gas-powered chainsaw delivers stable performance, avoiding body cracking and oil leakage.
- Thoughtful Design Features: The chainsaw has a 550 ml (0.14 gal) fuel tank and 260 ml (0.07 gal) chain oil tank for extended use. The 40:1 fuel mixture ensures continuous lubrication, reducing wear. The extended pull rope makes starting easier, and the chain adjuster allows for easy tension adjustments for optimal performance.
Rank #4
- Husqvarna 450 Rancher gas chainsaw 20 inch combines exceptional ergonomic features for easier handling and mobility with the superior power of a gas chainsaw—recommended for use with bar lengths between 13 inches (min) and 20 inches (max)
- Effortless Start-Up: Smart Start allows this Husqvarna chainsaw to quickly and easily start up with minimal effort, while the inertia-activated chain brake reduces the likelihood of injury due to kickback
- Powerful and Efficient Engine: Gas powered chainsaw delivers superior performance with a powerful and efficient 50.2-cc, 3.2-HP X-Torq engine that reduces emissions (up to 60%) and increases fuel efficiency (up to 20%)
- Air Injection Technology: Equipped with a centrifugal air cleaning system that expels larger dust and debris particles before they reach the air filter for improved engine life
- Easy Handling and Ergonomic Design: This 20 inch chainsaw features a soft inlay, ergonomic trigger and asymmetrical handle for increased comfort, plus LowVib technology for easier handling of recommended 13 to 20-inch chainsaw bars
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
