Johnson Evinrude Powerhead Installation
Install .0002" larger jets in carburetors.
Max timing MUST be retarded 2 degrees. Max timing MUST be set with engine running over 4500 RPM & under load. DO NOT STATIC SET MAX TIMING.
Re-torque cylinder heads to specs.
After 1 hour of break-in, allow engine to cool and retorque heads.
On 3 Cylinder engines, replace water pump with new high pressure water pump.
On 3 Cylinder engines, drill and relocate overboard sensors.
On 3 Cylinder engines, check latest OMC service bulletins and jet carburetors accordingly. THIS IS VERY IMPORTANT.
Use 92-94 octane premium fuel.
Clean and refill oil tank with TCW-3 oil.
Mark oil tank to verify oil comsumption during double oil usage of break-in period.
Run double oil during the first 30 gallons of fuel.
If running oil injection use 1 pint oil per 6 gallons gas.
If no oil injection, use 1 quart oil per 6 gallons gas.
Crowley Marine recommends installing water pressure gauge to monitor water flow.
Crowley Marine suggests removal of oil injection system or updating to latest VRO pump.
Crowley Marine recommends you replace water pump and gasket at time of powerhead replacement and every 2 years afterwards.
BRP292R - Johnson/Evinrude Two Cylinder 40-55HP 1989-2005
BRPC494R - Johnson/Evinrude V4 Bubbleback 110-140HP 1978-1998
BRPD401R - Johnson/Evinrude V4 60° Carbureted 90-115HP 1995-2006
BRPD404R - Johnson/Evinrude V4 60° FICHT 75-115HP 1998-2006
BRPL412R - Johnson/Evinrude V4 90° Looper 120-140HP 1985-2001
BRPC489R - Johnson/Evinrude V4 Flatback 88-115HP 1978-1998
BRPL619R - Johnson/Evinrude V6 90° FICHT 200-250HP 1999-2005
BRPL612R - Johnson/Evinrude V6 90° Looper Carb 200-250HP 1986-2001