Marzocchi Z1 Drop-Off QR20 User Manual

Z1
Drop-Off
QR20
INSTRUCTIONS
GENERAL RULES
1. Where specified, assemble and disas-
semble the shock absorption system us-
ing the M ARZOCCHI special tools only.
2. On reassembling the suspension system,
always use new seals.
3. Clean all metal parts with a special,
preferably biodegradable solvent, such
as trichloroethane or trichloroethylene.
4. Before reassembling, lubricate all parts
in contact with each other using silicone
fat spray or a specific oil for seals.
5. Always grease the lip seal rings before
reassembling.
6. Use wrenches with metric size only.
Wrenches with inch size might damage
the fastening devices even when their
size is similar to that of the wrenches in
metric size.

Marzocchi Z1 Drop-Off QR20 Specifications

General

Wheel Size	26 inches
Travel	130 mm
Steerer Tube Diameter	1 1/8 inches
Brake Compatibility	Disc
Spring Type	Coil
Damping	Adjustable rebound
Damper Type	Open bath
Axle Type	QR20 (Quick Release 20mm)
Intended Use	Freeride

Summary

General Rules

Failures, Causes and Remedies

Oil Leaking Through the Top of Slider

Identifies oil leaks from the top of the fork slider, listing causes and remedies.

Oil Leaking Through the Bottom of Slider

Identifies oil leaks from the bottom of the fork slider, listing causes and remedies.

Fork Locked Out After Disuse

Addresses forks locked out after periods of non-use, detailing causes and remedies.

Excessive Play in Stanchions

Details excessive play in stanchions, its cause, and recommended remedy.

Adjuster Position Affects Operation

Troubleshoots issues where adjuster position does not affect fork operation, providing causes and remedies.

Recommendations for Maintenance

Installation

Front Wheel Assembly

Instructions for properly fixing the front wheel to the fork for safe riding and operation.

Disc Brake System Assembly

Guidance for installing a disc brake system, emphasizing safety and component integrity.

Adjustment

Spring Preload

Explains how spring preload affects compression damping and how to adjust it.

Rebound Adjustment

Details how to adjust rebound damping using the adjuster screw on the fork leg.

Disassembly

Spring Change

Procedure for changing the fork springs, referring to specific figures.

Pilot Bushing and Seal Assembly Change

Steps for changing pilot bushings and seals, referencing related diagrams.

Fork Leg Oil Change

Procedure for draining and changing the oil in the fork legs.

Changing Pumping Element Seals

Instructions for replacing seals within the pumping element, referencing diagrams.

Valve Assembly Change

Process for changing the valve assembly, guided by specific figures.

Reassembly

Pilot Bushing and Seal Assembly

Instructions for checking and inserting the pilot bushing into the slider during reassembly.

How to Fill with Oil

Spring and Cap

Procedure for fitting springs into stanchion tubes and installing caps with O-rings.