ECHO CS-7301

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Philbert

Chainsaw Enthusiast
AS Supporting Member.
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"The CS-7310P Chainsaw is not only ECHO’s most powerful chainsaw in North America but it has the features arborists and loggers need to tackle tough jobs. Whether you're tree felling or firewood harvesting, the CS-7310P is powerful, durable, and ready to work as long as you do."
  • High-power 73.5 cc 2-stroke commercial grade engine
  • 4-stage air cleaner system results in longer air filter life
  • Decompression valve for easy starting
  • Automatic, adjustable clutch-driven bar oiler operates only when the chain is moving to reduce oil consumption
  • 19mm captive bar nuts – no chance of losing hardware
  • 3-point spring vibration reduction system for operator comfort
  • Aluminum handle with rubber grip for strength and comfort
  • Winter operation plug has 2 positions - 1 for winter and 1 for normal conditions - to improve engine operation
  • Engine Displacement (cc)73.5Oil Capacity (fl oz)12.2
    Engine Displacement (cu in)4.49Dry Weight (lbs)114.9
    Starting SystemstandardSprocket CoverMagnesium
    Ignition Systemdigital ignition systemBar TypePowerCut™
    Carburetor-Sprocket Type
    Oiling SystemAutomatic/adjustableHandleAluminum with Rubber Overmold
    Vibration Reduction SystemStandardFuel Capacity (fl. oz.)27.1
    Available Bar Lengths (in)20, 24, 28, 32Warranty1 yr commercial / 5 yr consumer
    1 Without bar and chain
    "

Philbert
 
(trade magazine news release):

ECHO’s 2021 CS-7310P chainsaw is brand’s most powerful yet
December 2, 2020
ECHO Incorporated made history today by announcing the addition of three new chainsaws to the brand’s lineup:

  • the CS-7310P, ECHO’s most powerful saw ever sold in North America;
  • the CS-2511P, the lightest chainsaw in the world;
  • and the CS-4910, the lightest 50 cc chainsaw in its class.
ECHO delivered 20 new products in 2020 and expects to launch a total of 18 new products for 2021.

“We are excited to launch three new market-leading chainsaws this year,” said John Powers, Director of Product Marketing, ECHO Incorporated. “Our new saws are packed with more power and more professional features and are lighter weight than previous models. This allows our customers, such as arborists and landscapers, to get their work done quicker and more efficiently.”

2021 ECHO CS-7310P
ECHO’s CS-7310P is the company’s most powerful chainsaw ever sold in North America. It features 13% more power and weighs 2 lbs. less than its predecessor, the CS-800P. An ideal saw for commercial arborists and loggers, it includes all the professional features that professionals require and one of the best air cleaner systems in the industry. The CS-7310P is available in 20”, 24”, 28” and 32” bar lengths, with either .050” or .058” gauge chain.

Main features of the CS-7310P include:
• ECHO’s most powerful chainsaw ever offered in North America
• High-power 73.5 cc 2-stroke commercial-grade engine
• 4-stage air filtration system with pleated air filter ensures a steady flow of clean air to carburetor and results in longer air filter life
• Fully loaded with professional features like magnesium crankcase, starter cover, and sprocket cover, rim sprocket, dual spikes, aluminum handle with rubber grip, and more
• Decompression valve, digital ignition system, and choke with automatic fast idle all contribute to easy starting
• MSRP for the 20” is $799.99, 24” is $809.99, 28” is $819.99 and 32” is $829.99


Philbert
 
The book says 14.8 lb but it feels slightly heavier than the 572 in my hands, but that could be a balance thing. I'll have to put it on my scale, as manufacturer weights are often not that honest.
What do you think of the front and rear handle vibration between the 572XP and the 7310?
 
7310.

Bore. 51.0mm (2.01")
Stroke. 36.0mm (1.24")
Compression ratio. 6.8:1

Measured by my hands, the AV is smooth as silk.
Does it take a service manual to get those?

I would guess that compression ratio is closed ports. Is there a convention in chainsaws as to how to report a compression ratio.

Pretty sure the reported vibration rating is a function in part using idle. Larger saws don't seem smooth at idle. 3 spring elements that is it? Any rubber bumpers or tension stops of some type?
 
Does it take a service manual to get those?

I would guess that compression ratio is closed ports. Is there a convention in chainsaws as to how to report a compression ratio.

Pretty sure the reported vibration rating is a function in part using idle. Larger saws don't seem smooth at idle. 3 spring elements that is it? Any rubber bumpers or tension stops of some type?
The info was in the instruction manual. Not sure how compression ratio was attained. With piston ported engines some builders use the trapped method.
 
I have questions about the 7310 having more power than a cs 8000. Have they forgot about the 900?
800P is still sold and has less power.
Hence they are compared.
It’s somehow looks less BS than “the next legendary” and then 18 months not available...
 
800P is still sold and has less power.
Hence they are compared.
It’s somehow looks less BS than “the next legendary” and then 18 months not available...
The 800 is 80.7cc and has less power than the 7310? Forgive me for being skeptical. All manufacturers have stupid marking, that the general public often eats up. The worst one in the saw world I know of, is Husqvarna with the higher cutting capacity claim, what does it even mean and how would one measure it? Log splitters with 20 tons written on the side, yet do the math and you get like 13 tons.
 
The 800 is 80.7cc and has less power than the 7310? Forgive me for being skeptical. All manufacturers have stupid marking, that the general public often eats up. The worst one in the saw world I know of, is Husqvarna with the higher cutting capacity claim, what does it even mean and how would one measure it. Log splitters with 20 tons written on the side, yet do the math and you get like 13 tons.
I’ve always wanted to know what they meant by “higher cutting capacity”??
 
I dunno, I like Echo products, but I'm not sure I'd go for the Echo in this case over the 572xp. The 572Xp is $850 at my Husky shop and I can get the warranty extended to five years if I buy a gallon of XP fuel at purchase. More importantly, it has Autotune, a slightly lower weight, heated handle option, cuts a bit faster and has a modern kill switch arrangement.

If price was no object in this segment though I would go in this order:

1) Stihl MS462 C-M
2) Husqvarna 572xp
3) Echo CS-7310P
4) Makita/Domar EA7301
 

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