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Specifications, Emission control (exhaust & evaporative), Epa 2010 and later and/or c.a.r.b. tier iii – Shindaiwa AH254 User Manual

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Specifications

Specifications are subject to change without notice.

Model

AH254

Engine Type

4-cycle, vertical cylinder, air cooled

Engine Bore x Stroke

34 x 27 mm/1.3 x 1.1 in.

Engine Displacement

24.5cc/1.5 cu. in.

Unit Weight, Less Fuel

6.3 kg/14 lbs.

Unit Dimensions (LxWxH)

2360 x 225 x 235 mm / 92.9 x 8.9 x 9.3 in.

Fuel Tank Capacity

590 ml/20.3 oz..

Fuel/oil ratio

50:1 with *ISO-L-EGD or JASO FD class engine oil

Carburetor

Diaphragm type

Ignition

Fully electronic, program controlled

Spark Plug**

NGK CMR5H

Electrode Gap

0.6 mm/ .024 in.

Torque

16.7 - 18.6 N∙m / 148-165 in • lbf

Air Cleaner

Foam pre-filter; sealed felt main filter

Starting Method

Recoil Starter

Stopping Method

Slide switch, grounding type

Blade Length

567 mm/22.3 in

Clutch Type

Automatic, centrifugal clutch with bevel gear

Gear Type

Spur gears

Gear Lubrication

Lithium-based grease

Standard Equipment

Tool kit, blade scabbard.

Idle Speed

3,000 RPM

Clutch Engagement Speed

4,100 RPM

Wide Open Throttle Speed (W.O.T.)

10,500 RPM

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 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.

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