I've spent several hours searching the Norton manual
, the "Access Norton" archives back as far as they go, and this forum's archives back to 2006 (177 posts containing the words "air filter") and can't find any information on this question. Maybe it's just too simple.
MKIII with the stock airbox. Took the front plate off, and the filter was installed on the "floor" of the airbox.
So (probably as long as I've had the bike), outside air has been coming straight through the intake horns under the airbox and into the carbs, bypassing the filter element (hence the ring job I'm doing now).
There appear to be three positions, three slots, that the filter can be slid into. One is where it was when I opened it, on the floor of the airbox, useless. There are two more slots above it; when I remove the filter and slide it into the top slot, it appears to be in the right place - air that comes in through the intake horns has to go through the filter to get to the carb mouths.
Am I the only one who ever noticed that there are apparently three ways the filter can go in? I swear there's nothing in the manual
or on any of the forums about it ..... ?
The present filter is not in that great a shape, so I'll see if CBS can get me one in their usual two days. The carbs and head are off now so it's easy to get the filter in and out; is it still possible to change that filter element with the two Amals in place, which they will be tomorrow afternoon I hope?