Operation; Engine Break-In; Engine Break-In Fuel Mixture; Pre-Starting Check List - Mercury 225 Pro XS User Manual

Engine Break‑in
Severe damage to the engine can result by not complying with the engine
break‑in proceedure. Engine damage may not be covered by the limited
warranty.
Avoid loss of boat control or an unsafe boat handling situation. Increasing
trim under can place greater load on an engine and enhance breakin. At
higher speeds, increasing trim under could produce a dangerous boat
handling situation. It is the boat operator's responsibility to always drive
in a safe manner.
Always vary throttle settings during Break‑in
1st Hour
• Allow engine to warm‑up for 30 ‑ 60 seconds.
• Do not idle for more than 5 minutes
• Run the engine the majority of the time between 4000 ‑ 5400 RPM
(approximately three quarter throttle).
• Change engine speed approximately every two (2) minutes.
• Avoid trimming the outboard out (up) beyond a vertical trim position during

operation.

• Avoid using hydraulic jack plate (if equipped) to raise engine during break‑in
cycle.
Next 3 Hours: Change engine speed every 10 minutes.
Engine Break‑in Fuel Mixture
Avoid engine damage. Do not add oil to the gasoline in the fuel tank.
The Propulsion Control Module (PCM) controls oil and fuel mixture during
engine break‑in.
Pre‑Starting Check List
Engine lowered to run position with all water intake holes submerged
OPERATION
CAUTION
!
WARNING
!
Break‑in Procedure
CAUTION
!
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