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Specications
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.
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.
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 Modication 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.