EPA engine family

Engine family RJYMC.169ZPG

If this code is printed on your emission label, this is your machine's federal record: sold under Jymoto Enterprises Inc., with an engine built by Zhejiang Jianying Locomotive Co., Ltd, certified as street-legal scooters and motorcycles.

Displacement: —
Model years: 2024
Models certified: 19
Certificates: 1

What this record says

Sold in the US by: Jymoto Enterprises Inc.
Engine built by: Zhejiang Jianying Locomotive Co., Ltd.
Vehicle category: Highway Motorcycle - Ib (50-169cc)
Certificate numbers: RJYMC.169ZPG-001

What the number itself says

Reading RJYMC.169ZPG left to right: R is the model-year letter for 2024, JYM is the three-character code the EPA assigned to Jymoto Enterprises as certificate holder, C marks a highway (street-legal) certification, .169 is the displacement in litres, so 169cc and ZPG is Jymoto Enterprises' 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 Jymoto Enterprises submitted for this family (model MS) carried engine code 1P61QMK. In the Chinese engine-model convention that reads as one cylinder, horizontal (flat) cylinder, with a nominal 61 mm bore, QMK series.

The certificate describes a four-stroke, single-cylinder engine with 2 valves per cylinder fed by carburettor. There is a catalytic converter in the exhaust, recorded as "TWC, single bed, open loop". The head carries a pulse secondary-air (PAIR) valve.

Rated power on the record is 7 kW (about 9 hp) at 6,500 rpm, driving through a CVT (belt and variator).

Engine code on test vehicle: 1P61QMK
Nominal bore (from the code): 61 mm
Cylinders / valves: 1 · 2 per cylinder
Cycle: four-stroke
Fuel delivery: carburettor
Oxygen sensor: no
Catalytic converter: TWC, single bed, open loop
Air injection: PAIR
Rated power: 7 kW (≈9 hp)
Rated speed: 6,500 rpm
Transmission: CVT (belt and variator)
Sales area: 50S
Vehicle built by: ZHEJIANG JIANYING LOCOMOTIVE CO., LTD.
Test vehicle model: MS

Filing history and where it was sold

Jymoto Enterprises filed one certificate under this family, for model year 2024, sold as 50-state, California included.

The vehicle itself is recorded as built by the same company, ZHEJIANG JIANYING LOCOMOTIVE CO., LTD. in CHINA — engine and chassis from one source.

Certified emission levels: CO 8.4, HC 0.3 g/km.

What this configuration means when you shop for parts

Jymoto Enterprises certified the 1P61QMK with a carburettor, so the fuel-side wear items are the carburettor, its jets and float needle, the intake boot and the choke. The 61 mm bore in the code gives the engine size, not the carburettor size — measure the intake bore and the mounting on the 1P61QMK before ordering.

The CVT behind the 1P61QMK makes its drive belt, variator rollers and clutch shoes the consumables, so measure the old belt on the MS rather than ordering by displacement.

The PAIR valve Jymoto Enterprises lists on the 1P61QMK is an emissions part; its hoses perish and are the usual cause of popping on the overrun.

The exhaust on Jymoto Enterprises' RJYMC.169ZPG carries a catalyst, so a replacement silencer without one changes what the 1P61QMK was certified with.

Other records carrying the same engine code

Jymoto Enterprises certified an engine with this code under 4 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 17 shown):

Apex Motosports IncTAPXC.169MC12026 · different engine factory
Apex Motosports IncSAPXC.169MC12025 · different engine factory
Gst Motor LLCTGSTC.169MCA2026 · different engine factory
Gst Motor LLCSGSTC.169MCA2025 · different engine factory
Gst Motor LLCRGSTC.169MCA2024 · different engine factory
Lil Pick Up Inc.FLLPX.169AAA2015 · different engine factory
Pacific Rim International West, Inc.RHALC.169GSE2024 · different engine factory
Scooterstar Motors LLCSSSTC.169MCA2025 · different engine factory
Taro Motorcycle LLCVTM3C.169MCA2027 · different engine factory
Taro Motorcycle LLCTTM3C.169MCA2026 · different engine factory

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 RJYMC.169ZPG

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.

ADV-200 · ANGLE-150 · FALCON-200 · FEIDU-150 · FLASH-150 · JOYNEW-150 · KALA-200 · MONNA-200 · MS · NAVY-150 · NVX-200 · ORION-200 · TANK-200 · TANKY-200 · TIGER-200 · TSL-150 · UBER-200 · WYAN-200 · ZUMA-200

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.