3.
HEADSET BEARINGS:
Every few rides, or every time that the bicycle is exposed to water (rain,
mud, or washing) a few drops of lightweight oil should be applied to the
upper headset bearing seal (located just below the stem.) This seal must
be kept lubricated, as it protects the headset cartridge bearings from
contamination by water and dirt. Failure to keep the headset bearing
seal lubricated will result in premature bearing wear.
SUSPENSION FORK BOOT:
Frequently inspect the rubber boot at the base of the headtube for tears
or cuts which could allow contamination. If the boot is damaged in any
way, it must be replaced immediately. Since boot replacement requires
the suspension fork be removed from the frame, this job should be per-
formed only by an experienced bicycle mechanic at an Authorized Head-
Shok Service Center. Damage to the HeadShok due to contamination by
water or dirt will not be covered under warranty.
HYDRAULIC CARTRIDGE OIL OR SEAL REPLACEMENT:
The oil in the HeadShok hydraulic cartridge should be replaced every 80
hours of riding, or at least once a year. The seals in the cartridge require
less frequent attention, and should be replaced every two years or when-
ever significant oil loss occurs. These procedures require unique tools
and substantial expertise and training with hydraulic suspension systems.
Therefore, they should be performed only by an experienced mechanic
at an Authorized HeadShok Service Center.
NEEDLE BEARING LUBRICATION:
The needle bearings which provide the smooth travel of the suspension
in the HeadShok fork should be lubricated every two months or 40 hours
of riding. This procedure requires partial disassembly of the suspension
fork, and therefore must be performed only by an experienced bicycle
mechanic at an Authorized HeadShok Service Center.
'99 SL-Fork Instructions 8/25/98 3:33 PM Page 3
