CRX J1349 Single Cylinder Engines User Manual
- June 13, 2024
- CRX
Table of Contents
CRX® 420
Single Cylinder Engines
User Manual
J1349 Single Cylinder Engines
- Weights are approximate and can vary with options
- Net power levels per SAE code J1349
| Description | Rating/Performance |
|---|---|
| Engine Type | Air-Cooled, Single Cylinder, OHV |
| Bore x Stroke | 3.54″ x 2.60″ (90 x 66 mm) |
| Displacement | 25.63 cu in (420cc) |
| Compression Ratio | 8.3:1 |
| Net Power | 9.0 kW @ 3600 rpm |
| Net Torque | 27 Nm @ 2800 |
| PTO Shaft Rotation | Counterclockwise |
| Ignition System | Transistor Magneto |
| Adjustable Throttle | Yes |
| Starting System | Recoil |
| Recoil Color | Black |
| Key Start/E-Start | E-Start Available |
| Low Oil Shutdown | Standard |
| Carburetor | Naturally Aspirated |
| Lubrication System | Splash |
| Governor System | Mechanical |
| Air Cleaner | Dual Element |
| Oil Capacity | 0.29 gal |
| Fuel Tank Size | 2.0 gal |
| Evaporative Emissions | Yes |
| Exhaust Emissions | 50 State |
| PTO Shaft Dimensions | 1″ (25.4 mm) |
| PTO Flange | SAE J609 Flange B |
| Engine Dry Weight | 67 lbs |
| Dimensions | 17.25” x 16” x 17.9” |
| Warranty | 3yr Commercial |
POWER MEASUREMENT
SAE J1349 POWER STANDARD
The SAE J1349 standard measures net power with the manufacturer’s production
muffler and air cleaner in place. Net power more closely correlates with the
power the operator will experience when using a CRX engine powered product.
The power rating of the engines indicated in this document measures the net
power output at 3600 rpm and net torque at 2500 rpm, as tested on a production
engine. Mass production engines may vary from this value.
Actual power output for the engine installed in the final machine will vary
depending on numerous factors, including the operation speed of the engine in
application, environmental conditions, maintenance and other variables.