Ultraflex ND1-MM User manual

Installation manual
(Dr. n° 36511 - 23/09/2020)
ZTF
TILLER SYSTEM
ULTRAFLEX
R
PARTNER
MERCURY MARINE YAMAHA
SUZUKI
M2 Y1, Y2
S2

Dear Customer,
The ZTF Tiller Systems are produced by ULTRAFLEX Company belonging to ULTRAFLEX GROUP.
ULTRAFLEX GROUP is a leader in steering systems for pleasure and professional boats since 1935.
ULTRAFLEX production is since ever synonimous of reliability and safety. All ULTRAFLEX products are
designed and manufactured to ensure the best performance, in accordance to the aim they were man-
ufactured for.
The quality management system involves all the company resources and processes starting from
the design, in order to:
- ensure product quality to the customer;
- maintain and improve the quality standards constantly;
- pursue a continuous process improvement to meet the market needs and to increase the cus-
tomer satisfaction;
- constantly test the products to verify their conformity with EC directives, ISO standards and
ABYC (American Boat and Yacht Council) requirements.
To ensure your safety and to maintain a high quality level, ULTRAFLEX products are guaranteed only
if they are used with original spare parts.
ULTRAFLEX S.p.A.
16015 Casella (Genova) Italia - Via Crose, 2
ULTRAFLEX

ZTF SYSTEM - page 3 of 39
Installation manual
ULTRAFLEX
SECTION 1 - PRODUCT DESCRIPTION
1.1 ZTF SYSTEM DESCRIPTION ����������������������������������������������������������������������������������������������������������������� 7
1.2 OPERATING PRINCIPLE ���������������������������������������������������������������������������������������������������������������������� 8
TABLE OF CONTENTS
SECTION 3 - INSTALLATION
3.1 SAFETY WARNINGS�������������������������������������������������������������������������������������������������������������������������� 12
3.2 INSTALLATION WAYS ����������������������������������������������������������������������������������������������������������������������� 12
3.3 INSTALLATION WITH 75-115 HP MERCURY MARINE ENGINES����������������������������������������������������������� 13
3.4 INSTALLATION WITH 90-115-130 HP YAMAHA ENGINES FROM 2015 TO DATE ����������������������������������� 15
3.5 INSTALLATION WITH 150-175-200 HP YAMAHA ENGINES������������������������������������������������������������������ 17
3.6 INSTALLATION WITH 150-175-200 HP SUZUKI ENGINES ������������������������������������������������������������������� 21
3.7 TILLER HANDLE ASSEMBLY������������������������������������������������������������������������������������������������������������� 25
3.7.1 ORIGINAL BRACKET REMOVAL ��������������������������������������������������������������������������������������������������������� 26
3.7.2 ZTF DEVICE ASSEMBLY ON TILLER HANDLE������������������������������������������������������������������������������������� 27
3.8 TILLER HANDLE DISASSEMBLY FROM OUTBOARD ENGINE ("REFITTING" INSTALLATION) ���������������� 30
3.9 WIRING �������������������������������������������������������������������������������������������������������������������������������������������� 30
SECTION 2 - TRANSPORTATION
2.1 GENERAL WARNINGS������������������������������������������������������������������������������������������������������������������������� 9
2,2 PACKAGING CONTENTS���������������������������������������������������������������������������������������������������������������������� 9
SECTION 4 - MAINTENANCE
4.1 ORDINARY MAINTENANCE���������������������������������������������������������������������������������������������������������������� 31
4,2 ZTF SYSTEM FILLING AND PURGING������������������������������������������������������������������������������������������������� 31
4.2.1 CONNECTING THE BUBBLE BUSTER TO THE SYSTEM������������������������������������������������������������������������ 32
4.2.2 FILLING AND PURGING OPERATION ������������������������������������������������������������������������������������������������� 34
4.2.3 DISCONNECTING THE BUBBLE BUSTER�������������������������������������������������������������������������������������������� 35
4.2.4 CHECK THE ZTF SYSTEM FUNCTIONING�������������������������������������������������������������������������������������������� 35
SECTION 5 - DISMANTLING
5.1 DISMANTLING ���������������������������������������������������������������������������������������������������������������������������������� 36
DOCUMENT REVISIONS���������������������������������������������������������������������������������������������������������������������������������� 4
MANUAL USE AND SYMBOLS USED��������������������������������������������������������������������������������������������������������������� 5
INTRODUCTION LETTER ��������������������������������������������������������������������������������������������������������������������������������� 6
WARRANTY���������������������������������������������������������������������������������������������������������������������������������������������������� 6

Installation manual
ULTRAFLEX
page 4 of 39 - ZTF SYSTEM
DOCUMENT REVISIONS
Rev.Rev. DateDate Revision descriptionRevision description
0 23/09/2020 First edition

ZTF SYSTEM - page 5 of 39
Installation manual
ULTRAFLEX
MANUAL USE AND SYMBOLS USED
STERN
BOW
STARBOARD PORT
Outboard
Engine
Tiller arm
Throttle
Shift
Lever
The picture aside explains the meaning of some
nautical words included in this manual.
THE INSTALLATION AND MAINTENANCE MANUAL should be kept for regular reference by the owner of the boat
and transferred to any new owner with the boat.
It is necessary to read carefully the manual, before ANY ACTIVITY involving the product, handling and unloading
included.
In this manual the following symbols are used to ensure the user safety and to guarantee the correct operation
of the product:
Immediate hazards which CAUSE severe personal injury or death.
The symbol aside indicates all the operations which must be carried out by
qualified or skilled staff, in order to avoid hazards.
We recommend training the staff in charge of the product installation and
checking their knowledge.
Important information for the correct installation and for maintenance, that
does not cause any damage.
Denotes that a hazard exists which can result in injury or death if proper
precautions are not taken.
Denotes a reminder of safety practices or directs attention to unsafe practices
which could result in personal injury or damage to the craft or components
or to the environment.
CAUTION
WARNING
DANGER
NOTICE
LEGEND
m.p.h. = miles per hour
km/h = kilometres per hour
10 m.p.h. = 8,69 knots
10 m.p.h. = 16,1 km/h
10 knots = 11,5 m.p.h.
10 knots = 18,5 km/h
10 km/h = 6,21 m.p.h.
10 km/h = 5,4 knots

Installation manual
ULTRAFLEX
page 6 of 39 - ZTF SYSTEM
ULTRAFLEX guarantees that its products are well designed and free from manufacturing and material defects, for
a period of two years from the date of manufacturing.
For the products which are installed and used on working or commercial boats the warranty is limited to one
year from the date of manufacturing.
If during this period the product proves to be defective due to improper materials and/or manufacture, the
manufacturer will repair or replace the defective parts free of charge.
Other direct or indirect damages are not covered by this warranty. In particular the company is not responsible
and this warranty will not cover any damage resulting from incorrect installation or use of the product (except for
replacement or repair of defective parts according to the conditions and terms above).
This warranty does not cover the products installed on race boats or boats used in competitions.
Descriptions and illustrations included in this manual should be used as general reference only.
For any further information please contact our Technical Service.
ULTRAFLEX steering systems are marked according to the Directive 2013/53/EU.
We remind you that only marked steering systems must be used on the boats marked .
We inform you that ULTRAFLEXwarranty is null if ULTRAFLEXcomponents are replaced with products of other brands.
WARRANTY
TECHNICAL SERVICE
INTRODUCTION LETTER
North - South - Central America:
UFLEX USA
6442 Parkland Drive
Sarasota, FL 34243
Ph.: +1.941.351.2628
Email: [email protected]
www.uflexusa.com
UFLEX S.r.l.
Via Milite Ignoto,8A
16012 Busalla (GE)-Italy
Ph.: +39.010.962.01
Email: [email protected]
www.ultraflexgroup.it
This installation and maintenance manual is an integral part of the product and should be easily available to staff in charge
of use and maintenance.
The user must know the content of this manual.
ULTRAFLEX declines all responsibility for possible mistakes in this manual due to printing errors.
Although the main features of the type of product described are not subject to change, ULTRAFLEX reserves the right
to modify any parts, details and accessories it deems necessary to improve the product or for manufacturing or commercial
requirements, at any time and without being obliged to update this manual immediately.
ALL RIGHTS ARE RESERVED. Publishing rights, trademarks, part numbers and photographs of ULTRAFLEX products
included in this manual are ULTRAFLEX property.
Great care has been taken in collecting and checking the documentation included in this manual to make it as complete
and comprehensible as possible. Nothing included in this manual can be interpreted as warranty either expressed or
implied - including, not in a restricted way, the suitability warranty for any special purpose. Nothing included in this manual
can be interpreted as a modification or confirmation of the terms of any purchase contract.
WARNING
To ensure the correct product and component operation, the product must be installed by qualified staff.
In case of part damage or malfunction, please contact the qualified staff or our Technical Service.

ZTF SYSTEM - page 7 of 39
Installation manual
ULTRAFLEX
1 PRODUCT DESCRIPTION
1.1 ZTF Tiller System description
The ZTF Tiller System is an hydraulic device that counters the propeller torque of outboard engines on the tiller
handle while the operator is not actively making a steering route change. It enables the driver to maintain the
right route without relevant physical effort.
The hydraulic valve gets opened when the operator makes a steering route change and the propeller torque is
present on the tiller handle. It is important that the operator keeps a firm grip on the tiller handle all time long
while operating the boat; specifically during steering route changes.
The ZTF Tiller System is made of four main components:
1Tiller handle (supplied directly by the engine man-
ufacturer or any dealer)
2Main valve device
3UC130-ZTF hydraulic cylinder
4Hydraulic hoses
NOTICE
The ZTF Tiller System is always supplied oil-filled, purged, functioning and with properly connected hoses.
CAUTION
Avoid twisting, damaging, bending and disconnecting the hoses.
CAUTION
The ZTF Tiller System is meant to be used with:
- Mercury Marine outboard engines of the 75 through 115 horsepower EFI four stroke family of engines built since 2014.
- Yamaha outboard engines of 90-115-130 HP produced from 2015 to date, and engines of 150-175-200 HP - models 2.7L
F150 Mechanical, VF150 V MAX SHO, F175, VF175 V MAX SHO, and F200 Mechanical
- Suzuki DF150A/175A/200A
and must be installed only on boats specifically designed and suitably equipped for being steered with the tiller
handle. The installer and the driver are responsible for ensuring the proper functioning of the ZTF Tiller System
on the boat, bearing in mind factors like speed, torques and working conditions.
CAUTION
Do not use this device for purposes other than those it was made for, as specified in the installation manual.
CAUTION
For installations other than the ones required for above-mentioned Mercury Marine, Yamaha and Suzuki engines,
please contact ULTRAFLEX Technical Service.
123
4
YAMAHA
123
4
SUZUKI
MERCURY MARINE
12
4
3

Installation manual
ULTRAFLEX
page 8 of 39 - ZTF SYSTEM
1.2 Operating principle
The hydraulic valve and corresponding cylinder of the ZTF Tiller System opens and closes when the pilot pushes
or pulls the tiller handle. When the pilot steers straight (keeping the steering route), the hydraulic valve is closed
thus removing the steering load from propeller torque on the tiller handle.
WARNING
The operator MUST maintain a firm grip on the tiller handle under ALL operating conditions; either actively
changing route or when maintaining a fixed route (with valve closed) as sea conditions, floating debris, or other
factors could suddenly change the steering route despite pilot's will.
The ZTF Tiller has a By-Pass Knob underneath the primary as-
sembly that can be used to engage or disengage the hydraulic
valve. Turning the knob clockwise completely will activate the
ZTF valve - locking out the propeller torque while not actively
changing steering route. Turning the knob counter-clockwise
will disengage the ZTF Tiller valve which will allow the propeller
torque to reach the tiller handle - even when not actively making
a steering route change.
WARNING
It is essential that the pilot confirms the functionality and status
of the ZTF Tiller System before using it.
To determine whether the system works properly, first check if
the By-Pass Knob is firmly closed by turning the By-pass Knob
clockwise. Then firmly push on the back of the engine to simu-
late a steering change (without pushing on the tiller handle simultaneously). If the engine does not turn in either
direction, the ZTF is engaged.
If the engine moves, tighten the By-Pass Knob in the clockwise direction and check again to see if the engine
moves. If it keeps moving, do not use the boat and contact our technical service for support.
Internal valve
open
Internal valve
open
Internal valve
closed
Propeller torque
No effort
=
Zero torque feedback
Propeller torque Propeller torque
ZERO TORQUE
FEEDBACK OFF
ZERO
TORQUE
FEEDBACK
ON

ZTF SYSTEM - page 9 of 39
Installation manual
ULTRAFLEX
2.1 General warnings
2 TRANSPORTATION
The product weight with its packaging is around 20kg (44 lbs.). Therefore, it can be handled manually.
2.2 Packaging contents
Before using the equipment check that the product has not been damaged during transportation. Make also sure
that all the standard components are in the packaging. In case of damage, do not use the ZTF Tiller System and
notify the freight carrier and your dealer/distributor immediately.
The ZTF Tiller System is provided with the following items:
WARNING
The staff in charge of handling must operate with protective gloves and safety shoes.
1Main system
2Accessory kit based on installation type, (see the following chart with related drawings and paragraph 3.2)
Hoses
Valve assembly Cylinder
MERCURY YAMAHA SUZUKI
KIT ND1-MM
(75-115 HP
ENGINES)
KIT ND1-Y
(90-115-130 HP
ENGINES FROM
2015)
KIT QU1-Y
(150-175-200 HP
ENGINES)
KIT QU1-S
DF150A / 175A /
200A ENGINES)
PROVIDED IN THE KIT M2 Y1 Y2 S2
1. Bracket
2. Hardware fastening the device to the bracket (2
screws M12, 2 nuts, 4 washers)
3. Hardware fastening the cylinder link arm to the
engine arm (2 special bolts ULTRABOLT, 2 high
nuts, 4 washers)
4. Hardware fastening the cylinder link arm to
the engine arm (1 SVS bolt ULTRABOLT, 1 SVS
washer, 1 thin nut)
5. Hardware fastening the bracket to the engine
arm (2 pivots, 2 washers, 2 nuts)
CAUTION: this hardware is always included in
Yamaha tiller handles
6. Hardware fastening the cylinder link arm to
the engine arm (1 SVS bolt ULTRABOLT, 1 SVS
washer, 1 thin nut)
7. Hardware fastening the bracket to the engine
arm (2 screws, 2 washers) CAUTION: washers
always included in Mercury Marine tiller handles
8. 2 Caps
9. Throttle cables and shift cables

Installation manual
ULTRAFLEX
page 10 of 39 - ZTF SYSTEM
KIT ND1-MM
1
2
6
7
KIT QU1-Y
1
2
3
9
KIT ND1-Y
1
2
4
5
9
9

ZTF SYSTEM - page 11 of 39
Installation manual
ULTRAFLEX
CAUTION
The packaging must be disposed of according to the existing laws.
Yamaha® tiller handle (not in-
cluded but directly supplied by
the engine dealer)
Mercury Marine tiller handle (not
included but directly supplied by
the engine dealer)
Suzuki tiller handle (not included
but directly supplied by the en-
gine dealer)
NOTICE
If engine manufacturer's is new it will be supplied with original bracket and the required fastening screws. It will
be necessary to remove the original bracket in order to install the ZTF system.
ORIGINAL
BRACKET
ORIGINAL
BRACKET
ORIGINAL
BRACKET
1
2
3
9
KIT
QU1-S
8

Installation manual
ULTRAFLEX
page 12 of 39 - ZTF SYSTEM
3 INSTALLATION
3.2 Installation ways
The ZTF system has two different installation ways:
1) NEW INSTALLATION: The Customer purchases a new engine manufacturer's tiller handle.
2) REFITTING: Customer's tiller handle has been already installed on outboard engine.
Moreover, the installation procedure changes according to the type of an outboard engine on which the ZTF system
is installed, as described in the following scheme:
3.1 Safety warnings
Strictly follow the precautions and the safety warnings throughout this entire manual. Failure to do so could result
in loss of steering with possible damage, injuries and death.
ULTRAFLEX declines all responsibility for errors during installation, mis-application, mis-use, neglect, or lack of
maintenance or routine inspection.
DANGER
- DO NOT PUT HANDS BETWEEN THE MOVING PARTS.
- Do not disable in any way the safety devices.
- Do not modify or add devices to the system, without ULTRAFLEX written authorization or technical intervention
which will prove the modification.
- Installation should only be performed by well experienced and trained marine technicians.
NEW INSTALLATION
TILLER HANDLE
ASSEMBLY
(see par. 3.7)
CONNECTING SHIFT AND
THROTTLE CABLES
(see par. 3.9)
Dismantling
the tiller handle
from the out-
board engine
(see par. 3.8)
REFITTING
(the Customer's
tiller handle has
been already
installed on
the outboard
engine)
ENGINE TYPE
150-175-200 HP
ENGINE TYPE
DF150A / 175A /
200A
ENGINE TYPE
75-115 HP
USE OF KIT
Y2 (accessory kit
QU1-Y included)
USE OF KIT
S2 (accessory kit
QU1-S included)
USE OF KIT
M2 (accessory kit
ND1-MM included)
FOLLOW THE IN-
STALLATION IN-
STRUCTIONS FOR
200 HP ENGINES
(see par. 3.5)
FOLLOW THE
INSTALLATION
INSTRUCTIONS FOR
DF150A / 175A / 200A
ENGINES (see par. 3.6)
FOLLOW THE
INSTALLATION
INSTRUCTIONS FOR
75-115 HP ENGINES
(see par. 3.3)
ENGINE TYPE
90-115-130 HP
FROM 2015
YAMAHA SUZUKI
MERCURY MARINE
USE OF KIT Y1
(accessory kit ND1-Y
included)
FOLLOW THE IN-
STALLATION IN-
STRUCTIONS FOR
130 HP ENGINES
(see par. 3.4)
INSTALLATION
TYPE

ZTF SYSTEM - page 13 of 39
Installation manual
ULTRAFLEX
CAUTION
Apply grease to the screw shafts before tightening the nuts.
CAUTION
The bracket must be oriented as shown in the picture.
3.3 Installation with 75-115 HP Mercury Marine engines
The ZTF installation requires the use of KIT ND1-MM (see
also par. 2.2).
1 Fasten bracket (1) on device (2) using screws (3) and nuts (4) after having properly placed washers (5).
Lock using 2 18mm wrenches with a tightening torque of 80 Nm (59 lb.-ft.).
NECESSARY TOOLS
(2 x) Open end
wrench
18 mm
Torque
wrench
MOLYKOTE® 1000
KIT ND1-MM
Open end wrench
9/16"
Open end wrench
14 mm
1
4
5
3
910
11
7
4
2
51
3
BOW
STERN

Installation manual
ULTRAFLEX
page 14 of 39 - ZTF SYSTEM
4 Complete the assembly of UC130 cylinder on the outboard engine by following what is reported
on the installation and maintenance manual of the cylinder itself, except for the fastening phase of
the cylinder link arm to the engine arm, which is described in the previous points.
WARNING
Do not disconnect the hydraulic hoses for any reason.
5 Assemble the tiller handle on the ZTF device as described in paragraph 3.7.
2 Fasten the device with the bracket on the engine arm using screws (7) and interposing washers (Y), fol-
lowing the tightening torque and the instructions included in the manual of the tiller handle.
CAUTION
During this operation, be careful not to damage, bend and disconnect the hydraulic hoses.
7
Y
3 Fasten the cylinder link arm (8) to the engine arm (6) by screwing a 3/8" ultrabolt (9) by interposing washer
(10): tighten the ultrabolt using a
14 mm wrench with a torque of 54
Nm (40 lb.-ft.).
Screw the self-locking nut (11)
with a 9/16" wrench and tighten it
with a torque of 27 Nm (20 lb.-ft.).
After having fastened the nut (11),
recheck that the tightening torque
- 54 Nm (40 lb.-ft.) - of the screw
(11) is correct.
CAUTION
Apply grease to the screw shafts
before tightening the nuts.
9
6
10
11
8

ZTF SYSTEM - page 15 of 39
Installation manual
ULTRAFLEX
CAUTION
Apply grease to the screw shafts before tightening the nuts.
CAUTION
The bracket must be oriented as shown in the picture.
3.4 Installation with 90-115-130 HP Yamaha engines from 2015 to date
The ZTF installation with 90-115-130 HP engines from 2015
requires the use of KIT ND1-Y (see also par. 2.2).
1 Fasten bracket (1) on device (2) using screws (3) and nuts (4) after having properly placed washers (5).
Lock using 2 18mm wrenches with a tightening torque of 80 Nm (59 lb.-ft.).
NECESSARY TOOLS
2 Screw and lock the studs (7) to the engine arm (6) follow-
ing the tightening torque and the instructions included in the
manual of engine manufacturer's tiller handle.
(2 x) Open end
wrench
18mm
Torque
wrench
MOLYKOTE® 1000
KIT ND1-Y
Open end wrench
9/16"
Open end wrench
14mm
1
4
5
3
910
11
7
4
2
51
3
6
7
BOW
STERN

Installation manual
ULTRAFLEX
page 16 of 39 - ZTF SYSTEM
4 Fasten the cylinder link arm (8) to the engine arm (6) by screwing a 3/8" ultrabolt (9) in the closest hole to
the stern, by interposing washer (10): tighten the ultrabolt using a 14 mm wrench with a torque of 54 Nm (40
lb.-ft.).
Screw the self-locking nut (11) with
a 9/16" wrench and tighten it with
a torque of 27 Nm (20 lb.-ft.). After
having fastened the nut (11), recheck
that the tightening torque - 54 Nm (40
lb.-ft.) - of the screw (11) is correct.
CAUTION
Apply grease to the screw shafts
before tightening the nuts.
5 Complete the assembly of UC130 cylinder on the outboard engine by following what is reported
on the installation and maintenance manual of the cylinder itself, except for the fastening phase of
the cylinder link arm to the engine arm, which is described in the previous points.
WARNING
Do not disconnect the hydraulic hoses for any reason.
6 Assemble the tiller handle on the ZTF device as described in paragraph 3.7.
3 Fasten the device with the bracket on the engine arm using nuts (X) and interposing washers (Y), follow-
ing the tightening torque and the instructions included in the manual of engine manufacturer's tiller handle.
Apply grease to the pivots before tightening the nuts.
CAUTION
During this operation, be careful not to damage, bend and disconnect the hydraulic hoses.
X
Y
9
6
10
11
8

ZTF SYSTEM - page 17 of 39
Installation manual
ULTRAFLEX
1 Fasten bracket (1) on device (2) using screws (3) and nuts (4) after having properly placed washers (5).
Lock using 2 18mm wrenches with a tightening torque of 80 Nm (59 lb.-ft.).
CAUTION
Apply grease to the screw shafts before tightening the nuts.
CAUTION
The bracket must be oriented as shown in the picture.
3.5 Installation with 150-175-200 HP Yamaha engines
The ZTF installation with 150-175-200 HP engines re-
quires the use of KIT QU1-Y (see also par. 2.2).
NECESSARY TOOLS
(2 x) Open end
wrench
18mm
Torque wrench
MOLYKOTE® 1000
KIT
QU1-Y
Open end wrench
9/16"
1
34
7813
14
11
10
5
6
24
5
1
3
BOW
STERN
1 Fasten bracket (1) on device (2) using screws (3) and nuts (4) after having properly placed washers (5).
Lock using 2 18mm wrenches with a tightening torque of 80 Nm (59 lb.-ft.).
CAUTION
Apply grease to the screw shafts before tightening the nuts.
CAUTION
The bracket must be oriented as shown in the picture.
The ZTF installation with 150-175-200 HP engines re-
quires the use of KIT QU1-Y (see also par. 2.2).
NECESSARY TOOLS
(2 x) Open end
wrench
18mm
Torque wrench
MOLYKOTE® 1000
KIT
QU1-Y
Open end wrench
9/16"
1
34
7813
14
11
10
5
6
24
5
1
3
BOW
STERN

Installation manual
ULTRAFLEX
page 18 of 39 - ZTF SYSTEM
2 Insert the two ultrabolts (6) and (7) with washers (8) into the engine arm (9) up to half of their length.
NOTICE
The screws must protrude from the engine arm by around 15 mm (0,59").
3 Assemble the device with
bracket (1) on the engine arm (9).
CAUTION
Be careful not to bend, kink or dis-
connect hydraulic hoses.
4 Place washer (10) on the front
ultrabolt (6), which is the closest to
the device and tighten manually the
self-locking nut (11).
CAUTION
Apply grease to the screw shafts
before tightening the nuts.
9
8
7
6
19
6
10
11
0,69"
2 Insert the two ultrabolts (6) and (7) with washers (8) into the engine arm (9) up to half of their length.
NOTICE
The screws must protrude from the engine arm by around 15 mm (0,59").
3 Assemble the device with
bracket (1) on the engine arm (9).
CAUTION
Be careful not to bend, kink or dis-
connect hydraulic hoses.
4 Place washer (10) on the front
ultrabolt (6), which is the closest to
the device and tighten manually the
self-locking nut (11).
CAUTION
Apply grease to the screw shafts
before tightening the nuts.
9
8
7
6
19
6
10
11
0,69"

ZTF SYSTEM - page 19 of 39
Installation manual
ULTRAFLEX
5 Place the cylinder link arm (12)
on the rear screw (7).
NOTICE
In order to complete the fastening
process of the cylinder to the en-
gine hose, refer to the instructions
included in the manual of the
cylinder.
6 Screw ultrabolt (7) letting it
protrude from the cylinder link arm
by at least 5 mm (0,19"), then place
washer (13) (see picture below).
7 Manually tighten the self-lock-
ing nut (14) on screw (7).
CAUTION
Apply grease to the screw shaft
before tightening the nut.
7
12
7
7
14
13
0,19"

Installation manual
ULTRAFLEX
page 20 of 39 - ZTF SYSTEM
8 Bring the two ultrabolts into contact with
the engine tiller arm and fasten them using a
9/16" wrench with a torque of 54 Nm (40 lb.-ft.).
CAUTION
This operation requires careful attention.
9 Afterwards, while holding a screw with a
9/16" wrench, fasten the corresponding nut
with a torque of 54 Nm (40 lb.-ft.). Repeat this
operation on the other nut always by holding
its screw.
Double-check the tightening of screws and
nuts by repeating the same procedure de-
scribed in points 8 and 9 (fastening screws
and nuts while holding screws).
CAUTION
This check requires careful attention.
10 Complete the assembly of UC130 cylinder on the outboard engine following what is reported on
the installation and maintenance manual of the cylinder itself, except for the fastening phase of the
cylinder link arm to the engine arm, which is described in the previous points.
WARNING
Do not disconnect the hydraulic hoses for any reason.
11 Assemble Yamaha tiller handle on the ZTF device as described in paragraph 3.7.