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The Scooter Parts Registry

EPA engine family

Engine family ASHKX.250AML

If this code is printed on your emission label, this is your machine's federal record: sold under Shenke Usa, Inc., with an engine built by Chongqing Zonshen Engine Manufacture Co., Ltd, certified as ATVs.

Displacement
—
Model years
2010
Models certified
16
Certificates
1

What this record says

Sold in the US by
Shenke Usa, Inc.
Engine built by
Chongqing Zonshen Engine Manufacture Co., Ltd.
Vehicle category
ATVA-Meet EPA & ARB ATV Definition
Certificate numbers
ASHKX.250AML-001

What the number itself says

Reading ASHKX.250AML left to right: A is the model-year letter for 2010, SHK is the three-character code the EPA assigned to Shenke Usa as certificate holder, X marks an off-road certification, .250 is the displacement in litres, so 250cc and AML is Shenke Usa's own sequence for that year. Nothing in the number names the factory — that comes from the certificate itself.

The engine, as described on the certificate

The test vehicle Shenke Usa submitted for this family (model SK250ATV-1) carried engine code 167FMM. In the Chinese engine-model convention that reads as one cylinder with a nominal 67 mm bore, FMM series.

The certificate describes a four-stroke, single-cylinder engine with 2 valves per cylinder fed by carburettor, run by an ignition control module (CDI-type ignition). There is a catalytic converter in the exhaust, recorded as "oxidizing catalyst only". The head carries a pulse secondary-air (PAIR) valve.

Rated power on the record is 10 kW (about 13 hp) at 8,000 rpm, driving through a 5-speed manual gearbox.

Engine code on test vehicle
167FMM
Nominal bore (from the code)
67 mm
Cylinders / valves
1 · 2 per cylinder
Cycle
four-stroke
Fuel delivery
carburettor
Oxygen sensor
no
Engine control
ICM
Catalytic converter
oxidizing catalyst only
Air injection
PAIR
Rated power
10 kW (≈13 hp)
Rated speed
8,000 rpm
Transmission
5-speed manual gearbox
Sales area
50S
Vehicle built by
Zhejiang Jonway Motorcycle Manufacturing Co., Lt.d.
Test vehicle model
SK250ATV-1

Filing history and where it was sold

Shenke Usa filed one certificate under this family, for model year 2010, sold as 50-state, California included.

The vehicle itself is recorded as built by Zhejiang Jonway Motorcycle Manufacturing Co., Lt.d. in China, while the engine came from Chongqing Zonshen Engine Manufacture Co., Ltd. Chassis parts and engine parts therefore have different origins.

Certified emission levels: CO 10.8, HC 0.30, NOx 0.21 g/km.

Other records carrying the same engine code

Shenke Usa certified an engine with this code under 3 other family numbers — the same engine filed again in another year, or in an off-road and a street version:

Other certificate holders whose test vehicle carried the same engine code (10 of 24 shown):

A shared code from the same factory is a strong search lead. From a different factory it is as often a naming coincidence. Either way it narrows the search; it does not settle it — measure before you buy.

Models certified under ASHKX.250AML

Every model designation the importer listed on this certificate. If your machine's model name appears here, this is the right record — even if the name on the bodywork is slightly different.

SK200ATV-1 · SK200ATV-2 · SK200ATV-3 · SK200ATV-4 · SK200ATV-5 · SK200ATV-6 · SK200ATV-7 · SK200ATV-8 · SK250ATV-1 · SK250ATV-2 · SK250ATV-3 · SK250ATV-4 · SK250ATV-5 · SK250ATV-6 · SK250ATV-7 · SK250ATV-8

Related in the registry

Source. US EPA annual certification data — EPA Certified Highway Motorcycle Test Results, MY2006-present; EPA Certified Off-Road Motorcycle / ATV / UTV / Rec Vehicle, MY2006-present. Retrieved 2026-09-07. Full provenance and method.