Echo CS-100 Specifications

Echo CS-100 Specifications

The Echo CS-100 chainsaw was manufactured by Echo (Kioritz Corporation) in Tokyo, Japan and was introduced in 1965. It was discontinued in 1966, but during its short production period, it proved to be a reliable and powerful tool. The chainsaw boasted an impressive 102cc engine displacement, making it one of the larger saws of its time. Its rigid handlebar system and one-man operator configuration made it easy to handle, while its die-cast magnesium construction made it durable and long-lasting.

Though it may not be in production anymore, the Echo CS-100 chainsaw remains a testament to the quality and engineering of Echo products.


Manufactured byEcho (Kioritz Corporation, Japan)
Year introduced1965
Year discontinued1966
Engine displacement102 cc (6.23 cu. in.)
Number of cylindersAir cooled, two-stroke, single cylinder gasoline engine
Cylinder bore2.24 in. (57 mm)
Piston stroke1.57 in. (40 mm)
Cylinder typeAluminum with chrome plated bore
Intake methodPiston ported
Manufacturer advertised H.P.N/A
Weight19.8 lbs. (9 kg) powerhead only
Handlebar systemRigid
Chain brakeNone
ClutchCentrifugal, 4 metal shoes
Drive typeDirect
ConstructionDie cast magnesium
Magneto typeFlywheel magneto with breaker points
CarburetorTillotson HL-226A series
Air filter systemNylon mesh element
Starter typeAutomatic rewind
Oil pumpAutomatic
Maximum engine RPMN/A
Ignition timing30 degrees before TDC
Breaker point setting0.012 to 0.016 in. (0.30 to 0.40 mm)
Flywheel/coil air gapFixed
Spark plug typeNGK B7S
Spark plug gap0.024 to 0.028 in. (0.61 to 0.71 mm)
Crankshaft main bearingsBall, 6204C3
Fuel tank capacity1.4 litres
Fuel oil ratio50:1 with Echo oil
Recommended fuel octaneRegular
Mix oil specificationEcho two-cycle mix oil
Chain pitch0.404 in.
Chain typeOregon 52
Shortest guide bar supplied17 in. (43 cm)
Longest guide bar supplied36 in. (90 cm)
Colour schemeEcho orange enamel with black top cover
Echo CS-100 Chainsaw Specs


  • Powerful 102cc engine for heavy-duty cutting tasks
  • Air-cooled, two-stroke, single cylinder gasoline engine
  • Aluminum cylinder with chrome plated bore for durability
  • Piston ported intake system for maximum efficiency
  • Automatic oiling system for hassle-free lubrication of the chain and bar
  • Automatic rewind starter for easy starting
  • Rigid handlebar system for added stability during operation
  • Centrifugal clutch with 4 metal shoes for smooth power transfer
  • Die-cast magnesium construction for lightweight and durability
  • Tillotson HL-226A series carburetor for reliable and efficient fuel delivery
  • Nylon mesh air filter for superior dust and debris protection
  • ECHO Orange enamel with black top cover color scheme for a classic look.


The Echo CS-100 chainsaw was a powerful and reliable tool manufactured by the Kioritz Corporation in Japan from 1965 to 1966. With its 102 cc engine and sturdy construction, it was capable of handling tough cutting jobs. Its automatic oil pump made it easy to operate, while the nylon mesh air filter system helped to keep it running smoothly. Although it is no longer in production, the Echo CS-100 chainsaw remains a popular choice for vintage tool collectors.

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