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Conduct regular inspection
(maintenance and service plan)
Measure idle speed emission(Remark 1)
Adjust the carburetor(Remark 2)
Disassemble and clean the carburetor
(SJ,MJ,SAJ,MAJ and so on)
Change the carburetor
Disassemble and repair the engine
•valve
(leak)
•piston
(wear)
•combustion chamber
Qualified
for delivery
Qualified
Qualified
Qualified
Qualified
Qualified
15.5 Countermeasure of idle speed emission exceeding specified
value(two-stroke)
Remark 1: Measure with idle speed measuring procedure.
Remark 2: Adjust the engine speed within the stipulation with a set screw and measure idle speed CO/HC.
Meanwhile adjust the air bolt so that CO concentration reaches 1.5-4.5%.
Qualified