A gasoline-powered engine with a crankshaft that extends horizontally from the side of the engine. It is commonly used to power pumps, generators, pressure washers, tillers, mini bikes, go-karts, and other equipment.

Off-road engines are designed for equipment that is not operated on public roads, such as construction, agricultural, industrial, and recreational equipment.

Typical sizes range from:

• 3–7 HP: Small pumps, tillers, mini bikes
• 8–15 HP: Pressure washers, generators, log splitters
• 16–25 HP: Commercial equipment, compact machinery
• 26–40 HP: Heavy-duty industrial and agricultural applications

Regular oil changes, clean air filtration, and proper storage are the biggest factors affecting engine longevity. 

CRX engines are designed for professional outdoor power equipment applications and offer a combination of commercial-grade durability, proven performance, and competitive pricing. With options ranging from single-cylinder engines to V-Twins, dealers can offer reliable power solutions for a wide variety of equipment and repower applications.

CRX engines are commonly used to power:

• Water pumps
• Pressure washers
• Generators
• Log splitters
• Tillers
• Go-karts
• Minibikes
• Concrete equipment
• Agricultural machinery
• Woodchippers

Yes. CRX professional and commercial engine platforms are engineered for demanding environments and feature components such as cast-iron cylinder sleeves, heavy-duty air filtration systems, forged crankshafts, and advanced cooling systems designed to support long service life.

CRX offers dedicated service and support resources, including product registration, service information, and parts support. Dealers can work through their RBI representative to identify replacement parts, warranty resources, and service solutions for customers.

Yes. CRX provides a Repower Cross Reference Guide that helps dealers quickly match CRX engines to competitor models and identify compatible replacement options. This makes it easier for service departments to recommend the right engine, quote repower jobs accurately, and help customers get equipment back in service faster.

1. Check oil level
2. Turn fuel valve ON
3. Set choke (cold starts)
4. Move throttle to START or FAST
5. Pull recoil starter or turn ignition key
6. Gradually open choke after engine warms up

Fresh unleaded gasoline (typically 87 octane or higher).

Avoid stale fuel older than 30–60 days unless stabilized.

Most engines can use E10 (10% ethanol), but prolonged storage with ethanol fuel may cause fuel system issues.

Typically, 1–3 minutes before applying heavy loads.

First Service: 5 - 10 hours

Regular Service: Every 50 - 100 hours

First Service: Inspect after 25 hours

Regular Service: Clean/replace every 25 - 50 hours

First Service: Inspect after 100 hours

Regular Service: Replace every 100 - 300 hours

First Service: Inspect annually

Regular Service: Replace as needed

First Service: Check after 300 hours

Regular Service: Every 300 - 500 hours

Recommended Oil Temperature Above 32°F (0°C)

SAE 30

0°F–100°F (-18°C–38°C)

10W-30

Wide Temperature Range

Synthetic 5W-30

Normal use: Every 50–100 hours.

Dusty or heavy-duty use: Every 25–50 hours.

No. Overfilling may cause smoking, fouled spark plugs, and engine damage.

Possible causes:

• Empty fuel tank
• fuel valve closed
• dirty carburetor
• bad spark plug
• low oil shutdown activated
• Dead battery (electric start)

Possible causes:

• Clogged fuel cap vent
• Dirty carburetor
• Water in fuel
• Choke left on

Possible causes:

• Dirty carburetor
• Air leak
• Restricted fuel flow
• Governor adjustment needed

Possible causes:

• Choke stuck closed
• Dirty air filter
• Rich fuel mixture

Possible causes:

• Excess oil
• Worn piston rings
• Engine tilted excessively

To properly store your CRX engine, follow these steps:

1. Drain fuel or add fuel stabilizer
2. Change engine oil
3. Clean dirt and debris
4. Remove battery (if equipeed)
5. Store in a dry location

Untreated gasoline can begin degrading within 30 days.

No. Gasoline engines produce deadly carbon monoxide. 

No. Allow the engine to cool before refueling. 

No. Guards protect against moving parts and injury. 

When operating the engine for extended periods, use approved hearing protection, selected in accordance with OSHA 29 CFR 1910.95. 

Note: Noise Reduction Ratings (NRR) are determined using ANSI S3.19 test methods.