Shindaiwa M254 manual Specifications, Emission Control Exhaust & Evaporative

Specifications

Engine Model	M254
Dry weight (Including attachments)	4.5 kg / 9.9 lb.
Engine type	4-cycle, vertical cylinder, air cooled
Bore x stroke	34 x 27 mm / 1.3 x 1.1 in.
Displacement	24.5 cc / 1.5 cu. in.
Fuel/oil ratio	50:1 with *ISO-L-EGD or JASO FD class engine oil*
Carburetor type	Diaphragm-type
Fuel tank capacity	590 ml / 20.0 oz.
Ignition	One-piece electronic, program contolled
Spark plug*	NGK CMR5H
Electrode Gap	0.6 mm / .024 in.
Torque	16.7 - 18.6 N∙m / 148-165 in • lbf
Air cleaner type	Foam pre-filter; sealed felt main filter
Starting method	Recoil
Stopping method	Slide switch
Transmission type	Automatic, centrifugal clutch w/bevel gear
Idle Speed	3,000 RPM
Clutch Engagement Speed	4,100 RPM
Wide Open Throttle Speed (W.O.T.)	10,500 RPM

Specifications are subject to change without notice.

Emission Control (Exhaust & Evaporative)

EPA 2010 and Later and/or C.A.R.B. TIER III

The emission control system for the engine is EM/TWC (Engine Modification and 3-way Catalyst) and for the fuel tank the Control System is EVAP (Evaporative Emissions) or N (for nylon tank). Evaporative emission may be applicable to California models only.

An Emission Control Label is located on the unit. (This is an EXAMPLE ONLY; information on label varies by en- gine FAMILY).

PRODUCT EMISSION DURABILITY (EMISSION COMPLIANCE PERIOD)

The 300 hour emission compliance period is the time span selected by the manufacturer certifying the engine emissions output meets applicable emissions regulations, provided that approved maintenance procedures are followed as listed in the Maintenance Section of this manual.

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