How to Remove the Powerhead from a Yamaha F225 Outboard

Extreme problems with an outboard call for extreme measures, like pulling off the powerhead to work on the engine.

Although removing the powerhead from a Yamaha outboard is rather simple, we recommend watching our Yamaha F225 powerhead removal video above before you start. The good news is you won't need any parts or special tools for this job, just a handful of basic tools.

Use our Yamaha F225TXRC exploded parts diagrams for additional reference. 

Tools Needed - Yamaha Outboard Powerhead Removal 

  • Ratchet and extensions
  • Socket set
  • Pliers
  • Screwdrivers

Yamaha F225 outboard powerhead removal

Removing a Yamaha F225TXRC Outboard Powerhead

Step 1. Remove the top cowling; the flywheel cover from the top of the motor; the ignition coil cover from the rear of the powerhead; and the intake silencer assemblies from the front left and front right of the powerhead.

Yamaha outboard powerhead removal

Step 2. Disconnect the positive and negative power cables from the battery first, followed by the fuel lines.

Step 3. Disconnect the throttle and shift cables.

Step 4. Remove the dipstick and the dipstick tube that runs down to the oil reservoir.

Yamaha F225TXRC powerhead removal

Step 5. Disconnect the main wiring harness running to the controls and all the other wires, cables and sensors that lead from the outboard to the boat.

Yamaha outboard motor powerhead removal

PRO TIP: Make notes and take pictures of where and what all the wires and cables were attached to and how they were oriented so you can reinstall them correctly when you rebuild the motor.

Step 6. Remove the left-side and right-side aprons and the rear cover that forms the lower cowling.

Yamaha F225 outboard lower cowling parts diagram

PRO TIP: Take the sets of nuts, bolts, washers and screws that you remove from various parts and put them in individual zip-lock bags, then label what's in each bag. If you don't keep everything separated and sorted, it'll be much harder to remember exactly what goes where when it's time to reassemble everything.

Step 7. Remove the six long bolts that run from the top of the upper casing to the powerhead and join them together.

Yamaha F255 outboard engine powerhead diagram

Step 8. Lift the powerhead off from the upper casing and you're done.

Yamaha F225 outboard motor powerhead removal

Ready to do a compression test for your Yamaha F225 outboard engine? Watch the video below to see how to test compression on an outboard motor




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