I-Convert acorn nuts
Moto Guzzi V7 Sport, 750 S, 750 S3, 850 T, 850 T3, 850 T3 California, V1000 I-Convert, V1000 G5, 1000 SP, Le Mans, Le Mans II, Le Mans CX 100, Le Mans III, Le Mans 1000, 1000 SP III, 1000 S, California II, California III, California 1100, California Jackal, California EV, California EV Touring, California Aluminium, California Titanium, California Special, California Special Sport, California Stone-Metal, California Stone-Touring, California Classic, California Touring, and California Vintage models
Thanks to Darrell Dick for providing information about where to source these acorn nuts on the old Yahoo! MGconvert news group (which has now moved to Groups.io).
The two hoses connected to the transmission on the right side are secured in place with acorn nuts. The original acorn nuts were constructed from two pieces and were prone to leakage if they bottomed out on the posts when being tightened. The solution is to use two or three extra crush washers to prevent bottoming out. If yours have already been turned into leakers, then you need new ones. As an alternative to purchasing the same original design as NOS, consider part number AN-124 from Colony Machine. These are chrome plated and while I would rather have stainless steel, I've been unable to source stainless steel acorn nuts in the required size (12 mm × 1.25 mm). I purchased these acorn nuts on eBay.