110 mm
Minimum
from the tire (see Fig. 10). Mark the fork leg
at this point with a marker or tape. This is the
lowest safe adjustment for the fork clamps. Do
not scribe or scratch the fork leg with an awl,
file, or similarly sharp object.
Caution: This lowest safe adjustment point
will change if you change the front tire. If you
change to a larger front tire, you must again
check that you have at least 110mm of clear-
ance between the bottom of the lower crown and
the tire before riding the bike.
2. Adjust the fork leg in the clamps within the
range defined by the upper collar on the top of
the leg and the mark which you made indicat-
ing the lowest safe position for the clamps.
WARNING: If the Lefty fork clamps are set
with less than 110mm of clearance between the
tire and the bottom of the lower clamp, there is a
risk of contact between the tire and the lower
clamp when the fork is completely compressed.
If such tire / clamp contact occurs while riding,
the front wheel could stop suddenly and throw
the rider over the handlebars, with risk of serious
injury or death.
3. Apply grease to the threads of all four clamp
bolts and using a 5mm hex wrench tighten the
bolts to 55-65 In-Lbs (6.25-7.25 Nm).
HEADSHOK SCHEDULED MAINTENANCE
It is recommended that you take your Lefty
fork to your Authorized HeadShok Service
Center for a regular tune up every two months
or 40 hours of riding. Your fork is a high per-
formance suspension system and needs regu-
lar inspection, lubrication, and maintenance.
Your mechanic will check the following items
and service the fork as necessary. Between
these tune-ups, you will also want to occasion-
Upper
ally check your HeadShok as outlined below.
Collar
Upper
FRAME AND FORK
Clamp
Once a month, or every few rides, clean and
Lower
inspect the entire frame and fork for any dents,
Clamp
cracks, or other damage. If any damage to the
frame or fork is found, do not ride the bicycle.
Have the damage inspected and assessed by a
Cannondale or HeadShok dealer.
HEADSET BEARING SEAL
All Lefty forks and all other forks which come
Fig.10
with the new lightweight HeadShok stem
(which can be identified by its two clamp
bolts) use a secondary black rubber seal on
top of the top headset bearing. For the Lefty
fork this seal goes below the top clamp,
against the headset bearing. Single crown
forks use the seal below the stem, against the
bearing. This seal will keep water and dirt out
of the headset bearing.
SUSPENSION FORK BOOT
Frequently inspect the rubber boot at the base
of the leg of the Lefty fork for tears, cuts, or
broken zip ties that could allow contamina-
tion. The fork boot protects the needle bear-
ings and bearing races from water, dirt, and
other contaminants. Make sure that the brake
tubing has not rubbed a hole in the boot. If
the tubing is rubbing on the boot, you should
re-route it to eliminate the contact. Your local
Cannondale retailer can help you with this pro-
cedure.
If the boot is damaged in any way, it must be
replaced immediately. On the Lefty fork, it is
necessary to remove the front brake, loosen
the leg clamps using a 5mm hex wrench,
remove the upper collar from the top of the
Lefty leg (using a 40mm headset wrench),
drop the fork leg out of the clamps, and
replace the boot. To reinstall the leg, see the
"Head Tube Angle Adjustment" section of the
instructions below. Your local Cannondale
dealer can help you with these procedures.
Damage to the HeadShok due to contamina-
tion by water or dirt will not be covered under
warranty.
Caution: The upper collar with 40mm wrench
flats on the top of the Lefty DLR and Lefty M is
not for any kind of adjustment, it is to allow the
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