Marzocchi Bomber User manual

SHOCK OWNER’S GUIDE

TABLE OF CONTENTS
ENGLISH 3
FRANÇAIS 9
ITALIANO 15
DEUTSCH 21
ESPAÑOL 27
PORTUGUESE 33
CHINESE 39

3
CONGRATULATIONS!
Thank you for choosing a Marzocchi suspension product for your bicycle. Marzocchi suspension products
are designed and tested by the finest professionals in the industry, in Santa Cruz County, California, USA.
Follow the guidelines and instructions provided in this owner’s guide, so that you are able to properly set
up, use, and maintain your new Marzocchi product.
More information and videos are available at www.Marzocchi.com, or call Marzocchi US at 1.800.369.7469,
or contact an Authorized International Marzocchi Service Center at www.Marzocchi.com. If access to the
Internet is not available to you, contact Marzocchi to order a paper copy of the online Marzocchi owner’s
manual for your product, free of charge.
WARNING AND SAFETY INFORMATION
Marzocchi products should be installed by a professional
bicycle service technician, in accordance with Marzocchi
installation specifications. Improperly installed forks can
fail, causing the rider to lose control resulting in SEVERE
INJURY OR DEATH.
Modification or alteration of a Marzocchi product can
cause product failure resulting in SEVERE INJURY OR
DEATH. Never modify or alter ANY part of a Marzocchi
product.
Marzocchi bicycle suspension products may also be used
on pedal-assisted motorized cycles or motorized vehicles
that produce less than 250 watts of power. DO NOT use
Marzocchi Bicycle suspension products on vehicles that
produce 250 watts of power or more.
DO NOT use any Marzocchi bicycle suspension products
on any pedal-assisted motorized cycle or motorized
vehicle that produces more than 500 watts of power. DO
NOT use any Marzocchi bicycle suspension product on
any throttle-equipped motorized vehicle.
Misuse of Marzocchi suspension products may cause
the suspension to fail, resulting in property damage or
SERIOUS INJURY OR DEATH, and void the warranty.
DO NOT use Marzocchi bicycle suspension products on
any vehicle carrying more than one operator or rider,
such as a tandem bicycle or heavy utility bicycle.
Improper service, or use of non-Marzocchi replacement
parts with Marzocchi shocks may cause the product to
malfunction, resulting in SEVERE INJURY OR DEATH.
Never use a power washer to clean your Marzocchi
product.
Follow your brake manufacturer’s installation instructions
for proper installation and adjustment of the brake
system. Failure to properly install and adjust your brakes
can lead to a loss of control of the bicycle, which can
result in SEVERE INJURY OR DEATH.
Your shock may fail under conditions that cause bending
and/or breaking to any part of the shock. Any condition
that causes a loss of air and/or oil, such as a collision or
extended periods of non-use, may also cause your shock
to fail. A damaged and/or leaking shock can fail, resulting
in a crash and SEVERE INJURY OR DEATH. If you suspect
your shock has been damaged, stop riding immediately
and contact Marzocchi for inspection and repair.
Never attempt to pull apart, open, disassemble, or service
a Marzocchi shock that is in a “stuck down” condition.
A “stuck down” condition results from a failure of the
dynamic air seal (located between the positive and
negative air chambers within the shock air sleeve),
resulting with the negative chamber retaining a higher
pressure than the positive chamber. To test whether the
shock is in fact “stuck down”:
Remove the air cap and depress the Schrader valve,
to completely release air pressure from the positive
chamber of the shock.
If the shock body retracts into the air sleeve near
bottom-out after the air is released from the positive
chamber, attach a high-pressure pump and pressurize the
shock to 250 psi (17 bar).
If the shock does not fully extend, it is in a “stuck down”
condition.
Any attempt to service Marzocchi air shocks in the
“stuck down” condition can lead to SERIOUS INJURY
OR DEATH. Contact Marzocchi or an Authorized Service
Center for repair.
ENGLISH

4
REAR SHOCK INSTALLATION
WARNING
Rear shock setup and configuration varies greatly between dierent bicycle manufacturers. Be sure to
refer to the owner’s manual for your bicycle. Marzocchi products should be installed by a qualified bicycle
service technician, in accordance with Marzocchi installation specifications. Improperly installed shocks
can fail, causing the rider to lose control, resulting in SERIOUS INJURY OR DEATH.
If you are installing your shock on a bike for which the shock was not original equipment, follow the steps
below to ensure proper clearance before riding.
AIR SHOCKS
1. Install the shock onto your frame according to your frame manufacturer’s instructions.
2. Remove the air cap, attach a shock pump, then SLOWLY release all air out of the main air chamber.
3. Slowly compress the suspension through its entire travel.
4. Check that the shock does NOT contact any portion of your frame or linkage as it cycles through
its travel.
5. Set the sag according to the following instructions.
SAG SETTING
To achieve the best performance from your Marzocchi suspension, adjust the air pressure to attain your
proper sag setting. Sag is the amount your suspension compresses under your weight and riding gear. Sag
range should be set to 25–30% of total shock travel.
1. Turn the compression adjuster fully counter-clockwise to the Open mode.
2. Start by setting the shock air pressure (psi) to match your weight in pounds. With the air pump
attached to the shock valve, slowly cycle your shock through 25% of its travel 10 times as you reach
your desired pressure. This will equalize the positive and negative air chambers and will change the
pressure on the pump gauge.
3. Do not exceed maximum air pressure: BOMBER AIR shocks have a maximum air pressure of 350 psi.
4. Remove the pump.
5. Sit still on the bike in your normal riding position, using a wall or
a tree for support.
6. Pull the sag indicator o-ring up against the rubber air sleeve
seal.
7. Carefully dismount the bike without bouncing.
8. Measure the distance between the sag indicator o-ring and
the rubber air sleeve seal. Compare your measurement to the
‘Suggested Sag Measurements’ table.
9. Add or remove air pressure until you reach your desired sag
measurement.
TOTAL SHOCK TRAVEL
RUBBER AIR
SLEEVE SEAL
25-30 % SAG RANGE

5
AIR SLEEVE
ADDING AIR PRESSURE
Equalize the positive and negative air chambers by slowly compressing the shock through 25% of its travel
10-20 times after every 50 psi addition. Failure to equalize the chambers can result in greater pressure
in the positive air chamber than the negative chamber. If the shock feels very sti and is in the topout
position, compress the shock until you hear or feel air transfer. Hold the shock in this compressed position
for a few seconds.
RELEASING AIR PRESSURE
Release air slowly so the air from the negative chamber can also be released through the Schrader valve.
Releasing the air pressure too quickly can cause the negative chamber to have more pressure than the
positive chamber. If the shock is compressed into its travel and does not fully extend, add air pressure
until the shock extends, then slowly compress the shock through 25% of its travel 10-20 times.
Suggested Sag Measurements
Travel 25% sag (Firm) 30% sag (Plush)
45 mm (1.7 in) 11.25 mm (0.44 in) 13.5 mm (0.53 in)
55 mm (2.16 in) 13.75 mm (0.54 in) 16.5 mm (0.65 in)
65 mm (2.56 in) 16.25 mm (0.64 in) 19.5 mm (0.77 in)
75 mm (2.95 in) 18.75 mm (0.74 in) 22.5 mm (0.88 in)
Do not exceed maximum air pressure:
BOMBER AIR maximum air pressure is 350 psi.