Transmission breather hose routing

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 III Fuel Injection, California III Full Fairing, 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

It may seem natural to route the transmission breather hose directly to ground. However, this is a sure way to dribble gear oil everywhere you go. Instead, route the hose upward as high as it will go under then frame. Then route it rearward and the back down to the ground.

This approach allows the transmission to breathe and for the oil that gets flung up into the hose to return to the transmission via gravity.

The early 5-speed transmission vent did not have a hose attachment. You'll want to source a vent with a hose attachment...or modify your original.