Robin America EK13, Service Manual

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3. FEATURES
1. EK Series has newly developed combustion system and resulting in high performance. And its inclined
cylinder offers compactness.
2. In addition to high output and fuel efficient, clean emission, less vibration and low noise promises
environmental friendly, easiness in use and reliability.
3-1 ENVIRONMENTAL FRIENDLY
High performance with fuel efficient and less oil consumption.
Cross flow ports design enables engine
’
s high output and
Pent-roof combustion chamber makes lean burning possible and realized fuel efficient,
(EK13/17/20/28)
Lens shape combustion chamber, napier ring for second ring and optimum setting of the carburetor
resulted in fuel efficient and less oil consumption.
（
EK30
）
3-2 USER FRIENDLY
Remarkably silent among same range of engines.
Suitable clearance in between rocker arm and rocker shaft, in addition cylinder head cover with double
metal sheets enables less valve noise. (EK13, 17, 20, 28)
Unlike above noted models, pivot type rocker arm is adopted as simple construction and achieving low
noise.
（
EK30
）
3-3 EXTREMELY EASY START
Mechanical automatic de-comp system and suitable combustion timing needs less starting power,
ladies and seniors can start engine easily without any problem.