Nose bowl & Prop removal (DIY?)

Any time the prop is removed, the plane is unairworthy. (Obviously) What that means is that you need an A&P to sign off getting it put back on. Depending on your relationship with your A&P he/she may or may not trust you to do that.

The work is easy. Remove the spinner. Remove the safety wire. Unbolt the prop. Set it aside (carefully! if you drop it, that's really bad). Remove the cowling and nose bowl. (lots of screws - I recommend dropping them in safety solvent to remove any grime that may have built up over time).

Mess with the breather tube as needed. Get an A&P to sign off that work.

Inspect your front spinner plate for cracks, etc.

Put the whole mess back together. Be VERY careful not to over-torque the prop bolts. I think it's 22-27 ft-lbs. I use 25. Use the specified washers. (there's a slightly oversized one approved by Univair, also). Don't put the spinner on until the prop install is inspected.

Get your A&P to inspect/sign off. Put on the spinner. Go fly!