Originally Posted by printman
bad news what bad news
The crankcase breather hose's location.
HOWEVER, before getting too worried about this, or starting to take the bike apart, check from the front as described below -- while it is not an uncommon problem, it is by no means a certain cause of your cold starting issue. By itself, your low mileage would tend to be against this as the cause, but the old age coupled with the lack of use (rubber drying out) tends to make it more a possibility.
You can see the hose in the photo below (looking toward the rear of the bike from the front forks area; in this pic the Telelever arm has been removed; the hose is visible under the arm when the arm is in place). The hose comes off the stub on the rider's right (left side of the pic, under the main frame backbone) and zig-zags over to the back side of the throttle body stub tubes (common distribution tube).
The throttle rail sits next to the left side of the frame backbone,
so you have to remove the rail to access the tube for replacement (throttle end hose clamps visible in lower right corner of this pic.
A significant pita to replace this hose **IF** this is the problem. A flashlight and an inpsection mirror on the end of a long rod can be used to reach in/view from the fork area before ripping things apart. A tell-tale bit of oil grime in the vicinity of the #4 throttle body is a clue toward this tube being cracked.
Edit: IIRC, if the tank's off, the hose can just be seen under the right side of the frame back bone, looking under the lower part of the electrical box.