www.iFourWinns.com

Hi!
I've got a Horizon 180 with a 4.3 GL-D (red engine). The engine has been running rich, so I want to retard the distributor a few degrees (after attaching the shunt and using a timing light). The hold-down bolt for the distributor is a tamper-resistant screw/bolt. What it is, is a hex (allen) shape with a pin in the middle of it. It seems to be a 5.5mm. Anybody know what size it exactly is? I called my dealer and they won't sell me the tool. I can find 5 and 6mm tamper resistant hex bits, but not a 5.5mm. I have a 5.5mm allen wrench, and am thinking of knocking out that pin or using an extractor. I hate to go to that extreme, but I'd just like to remove that bolt and replace it with something more common.

Thanks,
Rick

Seen this before on other devises. Very easy to drill out the bump and use a regular allen wrench with the right sized drill bit. Other options would be to notch it, and use a flat blade to remove it and then replace it with the bolt type you prefer. If all else fails, I believe you can find the bit on ebay.

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2007 Horizon 200
4.3L GXi/ SX 225 HP