For this you will need a 10mm socket and a wrench. Given that the bolts are somewhat recessed it can be hard to access them with a regular ring or open ended spanner, so a socket will make your life easier here. Here’s what you should be looking at:

There are four bolts to remove, and a spring which is hooked into the plate:

Grab your 10mm socket and loosen them:

The top-left most bolt is different:

It’s longer as it has to go through the top eye of the cam chain guide, and it’s a 6x30mm hex bolt with the Honda part number 90011-415-000 eBay US or 90003-kn7-671 (eBay US). The other three are identical, and are a 6x16mm flange bolt with the Honda part number 95700-0601600 (eBay US):


Now, leave the spring in place while you carefully remove the cam plate from around the crankshaft:

… and then once the plate is free unhook the spring, leaving you with a separated plate – Honda part number 14623-415-010 (found on eBay) – if you hit the search link you’ll probably see a handful of NOS ones available as of mid-2016 in case yours is damaged:


Possible complications include the cam plate being eaten into enough by the cam chain that it is difficult to get a socket around the bolt head. This can usually be rectified fairly easily by using a thin drift or pick to press the metal back down.
If you are doing this as part of a triple or quadruple bypass, click here to go back to the bypass page.