Engine Break-In Procedure

1. Phase 1: Pre-Start & Initial Heat Cycle

   • Fluid Check: Fill the engine with a high-quality OEM Spec. oil or any break-in oil supplied by Oregon Precision Powersports.  Ensure coolant is filled and bleed off all air pockets in head using bleed screw. Some Smoke is expected during the first few runs as it takes time for the rings to seat.

   • Initial Startup: Start the engine in a well-ventilated area. Keep the RPM's between 2500 and 3000. Do not high rev the engine. Listen closely for any abnormal noises.

   • Visual Inspection: While the engine is running, immediately inspect the entire engine area for oil, coolant, or exhaust leaks.

   • First Heat Cycle: Keep the engine rpm's between 2500-3000 until it reaches normal operating temperature (typically when the radiator fan cycles on). Once operating temperature is reached, shut the engine off completely. Bleed off the Head. If your engine temperature starts to climb above 210 degrees that means you still have air in the system. Shut the engine down and bleed off the air in the head.  Allow to completely cool. Start Phase 1 again.

   • Complete Cool-Down: Allow the engine to cool down completely to ambient room temperature. This first heat cycle is vital for the engine components to expand and contract together.

   Phase 2: The First 2 Hours (or 20–30 Miles)

   • Vary Your RPMs: Begin driving the UTV under light to medium acceleration. Never hold a constant RPM or steady speed for more than a few minutes. Constantly varying the engine speed creates the necessary vacuum and pressure to seat the piston rings.

   • Limit Maximum RPM: Do not exceed 50% of the engine's maximum RPM capability.

   • No Heavy Loads: Do not tow trailers, haul heavy cargo, or carry passengers during this phase. Avoid deep mud or steep hill climbs that place excessive load on the drivetrain.

   • Avoid Wide Open Throttle (WOT): Keep throttle inputs smooth and deliberate. Do not "floor it."

   Phase 3: Hours 2 through 10 (or up to 100 Miles)

   • Increase Engine Load: You may gradually increase your maximum RPM up to 75% of the engine's limit.

   • Short Bursts of Acceleration: Short, 2-to-3 second bursts of heavier acceleration (up to 3/4 throttle) followed immediately by deceleration are highly encouraged during this phase. The deceleration (engine braking) pulls oil up into the cylinders to wash away wear particles and helps finalize the ring seal.

   • Continue Varying RPMs: Avoid highway cruising or locking in a steady speed.

   • Heat Cycling: Continue to allow the machine to cool down completely between rides.

   Phase 4: The 10-Hour Crucial First Service

   Once the engine reaches 10 hours of run time or 100 miles, the initial break-in period is complete. You must perform the following service:

   1. Drain the Break-in Oil: Drain the oil while the engine is warm. Note: It is completely normal to see a fine, metallic "glitter" in the break-in oil as the new machined parts wear into each other.

   2. Replace the Oil Filter: Install a new, high-quality OEM or equivalent oil filter.

   3. Switch to Synthetic: Refill the engine with the manufacturer's recommended high-quality 5w-50 full-synthetic powersports oil.

   4. Inspect Air Intake: Verify that the air filter is clean and the intake tract is 100% free of dust or debris. 

Disclaimer: Always check your oil and coolant levels before every ride. Lack of lubrication or an overheated engine (as indicated by our proprietary heat tag) will immediately void your warranty.