Cannondale Lefty Ocho 120 Configuration guide

READ THIS SUPPLEMENT AND YOUR
CANNONDALE BICYCLE OWNER’S MANUAL.
Both contain important safety information. Keep
both for future reference.
Owner’s Manual Supplement
Lefty Ocho 120
English

Safety Messages
In this supplement, particularly important information
is presented in the following ways:
Indicates a hazardous situation which, if
not avoided, may result in death or serious
injury.
NOTICE
Indicates special precautions that must be
taken to avoid damage.
SYMBOLS:
NGLI-2
= Apply NGLI2 Synthetic grease
NYLON
= Suspension grease Buzzy’s Slick
Honey™ or R.S.P. Slick Kick
2
= Loctite® 242
3
= Loctite® 262
5
= Loctite® 222
N·m
= Tightening torque in Newton
meters.

3
CONTENTS
Safety Information....................47
Identification ................................ 8
Technical Information............. 921
Replacement Parts............... 2224
Maintenance ......................... 2526
Limited Warranty ....................... 27
Notes ........................................... 28
Cannondale Supplements
This manual is a “supplement” to your
Cannondale Bicycle Owner’s Manual.
This supplement provides additional and
important model specific safety, maintenance,
and technical information. It may be one of
several important manuals/supplements for
your bike; obtain and read all of them.
Please contact your Authorized Cannondale
Dealer immediately if you need a manual or
supplement, or have a question about your bike.
You may also contact us using the appropriate
country/region/location information.
You can download Adobe Acrobat PDF versions
of any manual/supplement from our website:
http://www.cannondale.com.
Contacting Cannondale
Cannondale USA
Cycling Sports Group, Inc.
1 Cannondale Way,
Wilton CT, 06897, USA
1800726-BIKE (2453)
Cycling Sports Group Europe B.V
CSG Europe (Woudenberg)
Cycling Sports Group Europe B.V.
Geeresteinselaan 57
3931JB Woudenberg
The Netherlands
PH: 00.31.541.200374
International Distributors
Consult our website to identify the appropriate
Cannondale Dealer for your region.
Your Cannondale Dealer
To make sure your bike is serviced and
maintained correctly, and that you protect
applicable warranties, please coordinate all
service and maintenance through your
Authorized Cannondale Dealer.
NOTICE
Unauthorized service, maintenance, or
repair parts can result in serious damage
and void your warranty.

4
Lefty Ocho 120 Owner’s Manual
138227 Rev 1 01/21)
Safety Information
Intended Use
SAFETY INFORMATION
Intended Use
Ocho
Model
Wheel Size
Travel Length
(mm)
ASTM
Condition 3
(Symbol)
Ocho
Carbon
Ocho Alloy
29” / 120mm
Condition 3, Cross-Country, XC
INTENDED
For cross-country riding and racing,
intermediate terrain (e.g., hilly with small
obstacles like roots, rocks, loose surfaces and
hard pack and depressions, relatively short
suspension travel, supporting nimble handling
NOT INTENDED  DO NOT USE:
No large drops, drop-os, wooden structures,
or dirt embankments requiring long
suspension travel or heavy duty components
and hard landings.
For Extreme forms of jumping/riding (e.g.,
hard core mountain, Freeriding, Downhill,
North Shore, Dirt Jumping, Hucking).
No Tandems
No Motorcycles
No Engine powered vehicles
Using the Lefty the wrong way is
dangerous.
Please read your Cannondale Bicycle
Owner’s Manual for more information
about Intended Use ASTM Conditions 15,
and riding conditions defined by each.
The intended use and riding conditions
defined by on-product markings and
owner’s manual for the specific Lefty fork
model MUST match those of the frame.
A mis-match between a Lefty fork and a
frame can lead to failure of the frame or
Lefty fork. Such a failure can lead to a loss
of control, with the risk of serious injury or
death to the rider.
If you have any questions consult a
Cannondale Dealer or professional bike
mechanic with experience in Intended Use
conditions in the bicycle industry.
You can be severely injured, paralyzed
or killed in an accident if you ignore this
warning.

5
Safety Information
Important Composites Message
Important Composites
Message
Your bike (frame and components) is made
from composite materials also known as
“carbon fiber.”
All riders must understand a fundamental
reality of composites. Composite materials
constructed of carbon fibers are strong
and light, but when crashed or overloaded,
carbon fibers do not bend, they break.
For your safety, as you own and use the
bike, you must follow proper service,
maintenance, and inspection of all the
composites (frame, stem, fork, handlebar,
seat post, etc.) Ask your Cannondale
Dealer for help.
We urge you to read PART II, Section D.
“Inspect For Safety” in your Cannondale
Bicycle Owner’s Manual BEFORE you ride.
You can be severely injured, paralyzed
or killed in an accident if you ignore this
warning.
Crash/Impact Damage
Inspection
After A Crash Or Impact:
Inspect the entire bike, all parts; Look
carefully for damage. See “Inspect For
Safety” section in the Cannondale Bicycle
Owner’s Manual. See Support at www.
cannondale.com
Any of the following conditions indicate
that serious fork damage is present:
• Any “klunking,” creaking, knocking or
unexplained noises.
• A change in travel, and/or function.
• Loss of adjustment features, oil or air
leaks, or loose/broken parts.
• Crash or impact damage (cracking,
deep scratches, gouges, dents, or
bending)
• Carbon which has a soft feel or
altered shape, or broken, splintered, or
delaminated carbon fiber.)
• Visible cracks, a white or milky color
present in carbon fiber section
Continuing to ride a damaged frame /
fork increases the chances of frame /fork
failure, with the possibility of injury or
death of the rider.

6
Lefty Ocho 120 Owner’s Manual
138227 Rev 1 01/21)
Safety Information
Minimum Tire-to-Crown Clearance
Minimum Tire-to-Crown
Clearance
Modification or installation of damping
cartridge/spacers other than specified; or
installing over-sized tires can result in
incorrect tire-to-crown clearance
Check minimum tire fork/frame
clearance with all air released from lefty
and fully compressed.
Measure between the top of the properly
inflated tire (1) and the bottom of the fork
crown (2).
2
1
≥ 3mm
If tire clearance is less than the minimum
specified, the rotating tire could come into
contact with with the fork crown or frame
causing the wheel to stop suddenly. This
can throw a rider o the bicycle or result in
a loss of control and crash.
Compression Assembly
55mm
1
5
2
3
4
For carbon steerer models, use only the
headset compression assembly (1)
specified for the model. See
“Specifications.”
Do not use other headset compression/
preload adjusters, shims, and do not
modify the steerer.
Do not Stack spacers (3) on top of the
stem (2) or exceed the 55 mm Maximum
Stack Height (total spacer height stacked
between the top of the head tube (5) and
the stem (2). Exceeding maximum stack
height with spacers (3) or locating spacers
on top of the handlebar stem can place
significant stress on the steerer tube (4). It
could break.
Follow the Cannondale compression
assembly installation instructions.
Use a torque wrench to tighten. Follow
stem manufacturer’s torque specifications.

7
Safety Information
Front Brake
Making External Adjustments
Make any external adjustments only when
stopped. Attempting to adjust while riding
can result in a loss of control.
You can be severely injured, paralyzed, or
killed in an accident if you ignore these
warnings.
Disassembly or Modification
Modifications can lead to serious fork
damage or serious personal injury.
Do not modify the Lefty in any way.
Use only original equipment (OE)
replacement parts. See “Replacement
Parts.”
Do not attempt damage repair yourself.
Have any required repair services or
procedures perform by an Authorized
Cannondale Dealer or Cannondale
Authorized Service Center.
You can be severely injured, paralyzed
or killed in an accident if you ignore this
warning.
Front Brake
The brake mount (1) is compatible with post
-mount type brake systems.
2
1
Before riding, make sure the StopLock
release lever is in the locked position
(shown). See “Front Wheel” removal and
installation instructions.
Follow brake manufacturer’s instructions
when mounting the brake caliper.
Do not ride without a front brake system
attached to the Lefty. A brake system
(disc/caliper) is an important secondary
wheel retention system. If the brake
system is missing or improperly installed,
and/or if the wheel hub axle bolt should
loosen, the front wheel could slide o the
spindle end.
You can be severely injured, paralyzed,
or killed in an accident if you ignore this
warning.

8
Lefty Ocho 120 Owner’s Manual
138227 Rev 1 01/21)
Identification
Parts of the Ocho
18
20
7
6
11
15
19
1
2
3
10
16
5
4
21
23
22
13
12
14
9
8
17
25 26
24
Lefty 60
1. Steerer
2. Integrated crown race (carbon only)
3. Crown
4. Outer Tube
5. Inner Tube
6. Lockout, Remote
7. Compression, Dial
8. Brake Cable Guide, Upper
9. Brake Guide Tube
10. Wiper Seal
11. O-ring, travel indicator
12. StopLock Brake Mount
13. StopLock Release Lever
14. Wheel Spindle
15. Rebound Adjuster
16. Air Valve
17. Serial Number
18. Wheel Size/Travel
19. Lefty 60 Hub
20. Bolt, axle
21. Label, Warning
22. Serial Number Label
23. Compression Assembly K35009
24. Travel Length (mm)
25. Oset (mm)
26. Wheel Dia. (inches)
Parts of the Ocho
Identification

9
Technical Information
Specifications
Technical Information
Specifications
Item Specification
Carbon
Travel Length 120mm 110mm
Wheel Size 29in.
External Adjustments Air Pressure, Rebound, Compression, Lockout
Remote Compatibility “FOX 2 POS (Fox p/n 8200701250, R) Rockshox OneLoc”
Recommended Sag 25% 30mm 27.5mm
Axle-to-Crown 530mm 520mm
1Minimum Tire-to-Crown Clearance 3mm
Fork Oset 50mm
“StopLock Brake Adapter Mount
(disc dia./ adapter)
Minimum: 160mm/ K53131
Maximum: 203mm/ K53131+20mm Post Mount Adapter
Hub Compatibility Lefty 60
2Maximum Tire Size:
(Dia./Width)”
760mm x 65mm
Headset Compression Assy. Only Cannondale
p/n K35058/K35009
Maximum Stack Height 55mm
Stem Clamp Dia. 28.6mm
Steerer: Type/ Taper Length/ Overall
Length
Tapered 1.5in - 1 1/8in/ 86mm/ 330mm
Crown Race: Type/Bearing/Degree Bonded 1.5in. / 36 degree
Manual Reset Length +/- 3mm 4mm
Air Pressure Limits Minimum: 50 psi/2.4 bar
Maximum: 250 psi / 17 bar
Intended Use ASTM CONDITION 3: Cross Country, Marathon, Hardtails
Max. Weight Limit Total
(Rider+All Equipment)
305 lbs/ 138kg
Key:
- Indicates a safety related. Read and follow instructions carefully.
(1) - Measure with all air pressure released and Lefty fully compressed. “See page 6.”
(2) - The “maximum width” of a specific tire will change with the tire type/manufacturer/model. A tire width will vary across
dierent point on the tire as well as with the tire ranges of inflation pressure and while riding. This specification is only a guide. Any
installed tire, must not be able to contact the Lefty and 3mm of any part of the Lefty maintained.
Product and Specifications are subject to change without notice.

10
Lefty Ocho 120 Owner’s Manual
138227 Rev 1 01/21)
Technical Information
Adjustments
Adjustments
Air Pressure
Set the initial air pressure according to your
weight (including the weight of riding gear)
based upon the following table. Then, adjust
air pressure in small amounts for your riding
preference.
Adding more air will result in a stier
suspension feel. Less air pressure will result in
a softer suspension feel. Stay within the
minimum and maximum air pressure limits.
2
1
Figure 2
To set air pressure:
1. Clean the area around the valve and the
pump end to remove dirt or contaminants.
2 Remove the valve cap (1), attach a
high-quality suspension pump to the valve
(2) .
3. Pressurize to the recommended air
pressure
4. When completed, remove the pump;
replace the valve cap.
Air Pressure/Rebound
Recommendation
RIDER WT. Air Pressure
(psi)
Rebound
(Clicks out
from slow)
Lbs Kg
120 55 68 17
130 59 81 16
140 64 94 15
150 68 107 14
160 73 120 13
170 77 132 11
180 82 145 10
190 86 158 9
200 91 171 8
210 95 184 7
220 100 197 6
230 105 209 5
Air Pressure Limits:
Minimum: 50 psi/ 3.5 bar
Maximum: 200 psi/ 13.75 bar
Air Pressure Limits:
Minimum: 50 psi/ 3.5 bar
Maximum: 200 psi/ 13.75 bar
NOTICE
• Stay within Air pressure limits.
• Attach pump only if valve and pump
are clean.