Gilera SATURNO BIALBERO 350 Workshop Manual page 140

MAINTENANCE TIPS
Continuation
If you have to change the races, the difficult bits are getting the bottom
inner race off the stem and getting the outer races out of the steering
head. There are tools designed to do the job and a local repair shop
MAY lend/hire them to you. Otherwise, you'll need a long punch which
you can put through the head stock and tap the race out, first one side,
then the other, a little at a time. Getting the bottom inner off is tricky.
Carefully tap a slim cold chisel or screwdriver under the race, first one
side, then the other, but go steady. You will probably damage the dust
cap which is under the race, so be sure to replace it (very cheap). The
important thing when refitting the races is to get them fully seated all the
way round. Don't hit them directly with anything metal, use a wooden
drift. The races will probably settle a bit after about 10-20 miles, so check
the adjustments.