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13.

JEKYLL SEATPOST MOUNTING

The Jekyll will accept any 27.2mm diameter seatpost. The seatpost must
be inserted with at least the recommended minimum insertion into the
seatube. Grease the seatpost clamp bolt threads and tighten it to 70-80
In-Lbs (8-9 Nm.)

IMPORTANT: Make sure that the end of the seatpost will not come into
contact with the rear shock and/or swingarm as the suspension is com-
pressed. To check, first adjust the seatpost height for the bike’s intended
rider. Then compress the rear suspension as far is possible in order to
bottom out the suspension travel. If necessary, cut the bottom of the
seatpost to provide at least 1/2” of clearance between it and the suspen-
sion parts when the suspension is fully compressed. Repeat this check
each time the seat height is readjusted. A good guide is to make sure
that the bottom of the seatpost doesn’t extend out past the bottom of 
the seat tube.

WARNING: Use only a 27.2mm diameter seatpost and be sure that 
the seatpost is held securely by the seatpost collar. The seatpost collar
clamp bolt must be torqued to 70-80 In-Lbs (8-9 Nm.) Failure to
properly torque the collar could lead to slippage, loss of control and 
risk of serious injury or death.

JEKYLL REAR SUSPENSION PRELOAD ADJUSTMENT

All Cannondale Jekyll models use a uniquely designed Fox shock absorb-
er to provide 120mm of plush rear wheel travel for all terrain riding. To
get the best performance from the rear suspension, the preload pressure
in the rear shock should be adjusted to suit the rider’s weight. The Fox
FLOAT R and FLOAT RC shocks use an air spring to adjust the stiffness
of the rear suspension and oil to damp the suspension movement. Before
adjusting air spring preload, clean any dirt from the area around the
Schrader valve on the shock absorber.

If you can’t easily access the Schrader valve to be able to attach a high
pressure suspension pump, loosen the shock lock ring using a Park red
pin spanner tool, place a 13mm wrench on the forward end of the shock
body, and rotate it to an accessible position.

Summary of Contents for Jekyll

Page 1: ...not receive both the Cannondale Bicycle Owner s Manual and the HeadShok owner s manual please download and print one from the Cannondale website Tech Center or call our customer service line at 1 800...

Page 2: ...e the shock is positioned in the collar Some Jekyll models use Fox rear shocks equipped with compression adjusters which can be used to stiffen the rear suspension for a more race oriented ride COMPON...

Page 3: ...hok headset cups only FRONT DERAILLEUR All Jekylls require a standard bottom pull type front derailleur with a 31 8mm clamp diameter Because the front derailleur mounts to the rear swingarm and has a...

Page 4: ...from chain slap ALTERNATIVE BRAKES Hydraulic and disc brakes are a popular upgrade on many suspension bicycles When selecting a hydraulic brake system for your Jekyll choose one that mounts to the fr...

Page 5: ...hex wrench Once the bolt is removed pivot the swingarm down and the rear of the shock up so that the two don t touch 3 Spin the shock body clockwise when viewed from the front of the bike within the p...

Page 6: ...ost aft position adjust the front derailleur so that the derailleur cage is approximately 1mm above the large chainring when there is no weight on the bike see Fig 2 The rear end of the derailleur cag...

Page 7: ...7 1mm Fig 1 Fig 2 Note Threads...

Page 8: ...should never be used These gear combinations called cross chaining place undue stress on the chain chainrings derailleurs and rear cogs Duplicate or similar gear ratios can be achieved in other combin...

Page 9: ...tside of the Lefty leg and behind to the disc brake See Fig 4 Note that the zip tie loops need to be loose enough to allow the hydraulic brake line to slide freely up and down If equipped with a Fatty...

Page 10: ...DERAILLEUR Run cable housing from the front shifter to the housing stop on the right side of the downtube Run exposed cable to the housing stop a the lower end of the downtube Run cable housing appro...

Page 11: ...the outside of the Lefty leg and behind to the disc brake See Fig 4 If equipped with a Fatty Ultra or Super Fatty fork the tubing from the front brake lever should be directed behind the shock boot an...

Page 12: ...towards the front derailleur REAR DERAILLEUR Run cable housing from the rear shifter to the lower slot in the double housing stop on the left side of the downtube Insert the included plastic cable sto...

Page 13: ...a 27 2mm diameter seatpost and be sure that the seatpost is held securely by the seatpost collar The seatpost collar clamp bolt must be torqued to 70 80 In Lbs 8 9 Nm Failure to properly torque the c...

Page 14: ...e seat It may be easiest for the rider to lean against a wall or post It is important that the rider not bounce the bike Then have the rider carefully dismount the bike again being careful not to boun...

Page 15: ...te the different ride characteristics You may want to change your rebound setting for different riding conditions COMPRESSION DAMPING ADJUSTER Fox FLOAT RC rear shocks also have a compression adjuster...

Page 16: ...l for more details All other components including HeadShok forks suspension parts frame fixtures and finishes paint and decals are warrantied against manufacturing defects in materials and or workmans...

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