Thanks to all who have contributed here. The last of my parts came on Friday, so yesterday it was time to dive in. I had a complete seal kit (for bosch ve pumps), a new fuel pipe assy, and of course the compensator itself.
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I should preface by saying I did this all in situ. Its doable, but awkward at times.
First things first. Remove the old cap. The FSM shows so-so detail, but in essence, you need to remove the four perimeter bolts (5mm allen key I think), and also the a/c vacuum idle up thingy on the side (three more bolts). Pulling the forward battery and the throttle linkage is also a good idea for access. And of course the two fuel hoses have to be detached.
View attachment 3148203At this point you can lift the cover partway off, but don't get carried away. Once you've lifted one edge, detach the spring from under the cover. The details of this spring are in the service manual, but the other end has another spring and a pin, so be careful. Lots of small parts to go flying.
Okay, the cover can come off now, and you can dive into the bag of washers, orings and seals.
I replaced the main cover seal, as well as the oring on the throttle control shaft once I removed it from the old cover (required light tapping to get it out, with soft hammer). Also fitted new copper washers either side of the fuel pipe, and a new washer behind the fuel screw. I counted the turns on the fuel screw as I removed it, so I could get it back in approximately the same spot.
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I mistakenly thought that the idle and max speed limit screws would go back in the same place but as the pic above shows (where I have them in wrong) the covers differ in their castings in that area, so I had to reinstall both screws after the fact. I was worried about the hoses not being the right length so I clocked the new fuel pipe until it seemed to work with both, although the smaller diameter hose up top was a trifle long (that's a good problem). Here's the orientation that seemed to work:
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I did notice a little dirt in the banjo bolt so I picked and sprayed it out thoroughly before reinstall.
Then it was time for reinstall. I had removed the throttle control plate before removing the cover, but this would have been better done on the bench for both removal and reinstall, methinks?
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At this point, you have to somehow get the spring reattached to the linkage, clear the intake with your new taller stack, and get the bolts back in, while overcoming the resistance of the springy linkage pushing up on the underside. Not easy.
