Multiflex L4 Mild Steel Adjustable Universal Steering Link Arm Kit

The Multiflex LM-L-4 / L4 Adjustable Link Arm Kit connects the moving end of a compatible mechanical steering cable to an outboard engine steering tiller or rudder. Current Multiflex product data identify an adjustable mild-steel arm with permanently lubricated rod ends, supplied with a dust-wiper boot, Nylock nut and 3/8in mounting bolt. It is intended for many popular outboard engine brands, subject to the steering geometry and mounting requirements of the individual installation.

Product Identification

• Brand: Multiflex
• Model / item code: L4
• Manufacturer part number: LM-L-4
• Product category: Mechanical steering link arm kit
• Alternative description: Adjustable steering cable-to-engine link arm
• Arm configuration: Adjustable length
• Current manufacturer-listed material: Mild steel
• Primary function: Connects a mechanical steering cable to an engine or rudder
• Rod ends: Permanently lubricated
• Mounting bolt: 3/8in / approximately 9.5mm
• Included protection: Dust-wiper boot
• Included retaining hardware: Nylock nut
• Engine compatibility: Many popular outboard engine brands, subject to model and installation compatibility
• Steering type: Compatible mechanical cable steering systems
• Multiflex cross-references: Ultraflex A73SS and A74SS
• Standard stainless-steel alternative: Multiflex LM-L-1 / L1
• Standard mild-steel alternative: Multiflex LM-L-2 / L2

What Is This Steering Link Arm Used For?

The Multiflex LM-L-4 forms the mechanical connection between the moving end of a compatible steering cable and the steering attachment point on an outboard engine or rudder.

As the steering wheel is turned:

1. The steering helm moves the inner steering cable.
2. The steering cable pushes or pulls the LM-L-4.
3. The link arm transfers the movement to the engine steering tiller or rudder.
4. The engine or rudder moves to port or starboard.

The LM-L-4 is one component within the complete mechanical steering system. It does not replace the steering helm, steering cable, engine tilt tube or other installation-specific mounting components.

What Is Included?

This listing is for:

• One Multiflex LM-L-4 adjustable steering link arm
• Permanently lubricated rod-end connections
• Dust-wiper boot
• Nylock nut
• 3/8in mounting bolt

Not included unless expressly stated:

• Mechanical steering cable
• Steering helm
• Dashboard bezel
• Steering wheel
• Engine steering tiller
• Engine tilt tube
• Clamp block
• Splashwell mounting kit
• Transom support bracket
• Engine-specific adaptor
• A second link arm
• Additional installation hardware not identified in the kit
• Other steering-system components

Is the LM-L-4 Adjustable?

Yes. The LM-L-4 is the adjustable link-arm model.

Manufacturer imagery shows a two-section arm with a threaded adjustment area and locking nut. This allows the effective connection length to be set according to the engine, steering cable and mounting geometry before the adjustment is secured.

The adjustable design can assist with:

• Aligning the steering cable with the engine tiller
• Centring the engine relative to the steering travel
• Matching different mounting geometries
• Reducing unwanted angular loading
• Providing clearance around the transom and splashwell
• Correcting the effective link-arm length within the available adjustment range

What Is the LM-L-4 Adjustment Range?

The current Multiflex product data do not publish a numerical minimum or maximum length.

One specialist marine supplier reports:

• Approximate minimum length: 330mm / 33cm
• Approximate maximum length: 360mm / 36cm
• Approximate adjustment range: 30mm

These dimensions are supplier-reported rather than manufacturer-confirmed. Check the physical LM-L-4 where the exact installed length is critical.

The available product data do not define whether the measurement is taken between rod-end centres, mounting-hole centres or the overall ends of the complete assembly.

Which Applications Are Suitable?

The Multiflex LM-L-4 is intended for correctly specified mechanical steering installations including:

• Compatible outboard engine steering
• Compatible rudder steering systems
• Tilt-tube steering arrangements requiring a separate link arm
• New mechanical steering installations
• Replacement of a compatible adjustable link arm
• Installations requiring a 3/8in engine or rudder mounting connection
• Steering arrangements requiring limited link-arm length adjustment
• Installations where a fixed-length arm does not provide correct alignment

The LM-L-4 is not a hydraulic steering tie bar, hydraulic-cylinder rod or throttle and gear-control linkage.

Which Outboard Engines Are Compatible?

Multiflex states that the L4 suits most popular brands of outboard engines, but it does not publish a model-by-model compatibility list.

Compatibility must be confirmed by checking:

• Outboard manufacturer
• Engine model
• Engine production year
• Steering tiller mounting position
• Required link-arm length
• Required adjustment range
• Engine-side mounting-hole diameter
• Steering cable output-end connection
• Tilt-tube arrangement
• Steering travel
• Clearance at full port and starboard lock
• Clearance throughout the engine tilt range

Is the LM-L-4 a Universal Link Arm?

The LM-L-4 is a universal-style adjustable link arm because it is intended for a range of compatible outboard engines and mechanical steering arrangements.

“Universal” does not mean that:

• It fits every outboard engine
• Every steering tiller accepts a 3/8in bolt
• Every steering cable uses the same output-end connection
• Its adjustment range covers every installation
• No engine-specific adaptor is required
• The same adjustment position suits all engines
• Steering and tilt clearances can be assumed

Which Steering Cables Are Compatible?

The current Multiflex L4 product data do not identify a specific Multiflex steering cable family or an exact SeaStar, Teleflex or Ultraflex steering cable part number.

The LM-L-4 is intended for a compatible mechanical steering cable with an engine-side output connection matching the link-arm fitting.

Before installation, confirm:

• Steering cable manufacturer
• Steering cable model
• Cable output-end design
• Cable-end mounting-hole diameter
• Steering cable travel
• Required link-arm connection
• Minimum cable bend radius
• Cable condition
• Available steering travel
• Engine or rudder connection geometry

Which Ultraflex Link Arms Cross-Reference to the L4?

Multiflex cross-references the L4 to:

• Ultraflex A73SS
• Ultraflex A74SS

Multiflex states that its cross-reference information is for guidance and that interchangeability must be confirmed before installation.

Ultraflex identifies the referenced products as:

• A73SS / 41255T: Stainless-steel tiller arm for some Mercury outboard engines
• A74SS / 41256V: Stainless-steel tiller arm for some Johnson, Evinrude and BRP outboard engines

The Ultraflex references have different engine-specific applications. The L4 cross-reference does not mean that one mounting position or adjustment setting suits every engine.

Is the LM-L-4 a Direct Replacement for A73SS and A74SS?

The L4 is manufacturer-cross-referenced to A73SS and A74SS, but Multiflex states that users should confirm interchangeability before installation.

Before replacing either Ultraflex link arm, compare:

• Engine manufacturer and model
• Steering cable output connection
• Engine-side mounting point
• Minimum and maximum link-arm length
• Arm shape and offset
• Mounting-bolt diameter
• Rod-end position
• Steering travel
• Engine tilt clearance
• Full-lock clearance
• Material requirement

How Is the Adjustable Length Secured?

Manufacturer imagery shows an adjustment section with a locking nut positioned between the two arm sections. The exact tightening torque and locking procedure are not published on the current product page.

During installation:

• Set the link arm to the required effective length
• Align both rod ends without forcing the steering cable sideways
• Centre the engine and steering cable travel
• Tighten the adjustment lock according to current Multiflex instructions
• Confirm that the arm length cannot change during operation
• Recheck the locking section after the initial steering test

Does the Link Arm Connect to the Steering Helm?

No. The LM-L-4 is installed at the engine or rudder end of the steering system.

A typical mechanical steering arrangement consists of:

• Steering wheel
• Dashboard steering helm
• Mechanical steering cable
• LM-L-4 adjustable link arm
• Outboard steering tiller or rudder connection

What Does the 3/8in Mounting Bolt Connect To?

The kit includes a 3/8in mounting bolt, equivalent to approximately 9.5mm in diameter.

The bolt is used as part of the engine-side or rudder-side connection, subject to the design of the steering attachment point.

Before fitting the bolt:

• Confirm that the mounting hole accepts a 3/8in fastener
• Confirm that the bolt length suits the connection
• Check that the link arm can articulate freely
• Ensure the Nylock nut fully engages the thread
• Do not overtighten the joint
• Follow the engine and steering-system tightening requirements

One specialist supplier also reports 9.5mm engine and steering-cable fixing diameters, but these dimensions are not separately published on the current Multiflex product page.

What Are Permanently Lubricated Rod Ends?

Multiflex describes the L4 rod ends as permanently lubricated. These articulated joints accommodate the changing angle between the steering cable and engine or rudder as the system moves through its steering range.

The rod ends are intended to:

• Transfer steering movement
• Allow controlled angular movement
• Reduce friction at the linkage
• Support smooth steering operation
• Reduce routine lubrication requirements

“Permanently lubricated” does not mean maintenance-free. The rod ends must still be inspected for corrosion, looseness, restricted movement, damage and excessive free play.

The current manufacturer data do not state the rod-end material. Stainless-steel rod ends should not be claimed without checking the supplied item.

What Does the Dust-Wiper Boot Do?

The included dust-wiper boot is fitted around the exposed steering cable or linkage connection area.

It is intended to help shield the connection from:

• Dirt
• Dust
• Salt deposits
• Water spray
• Other contaminants

The boot should be inspected for splitting, hardening, displacement, abrasion, loose fitment and other material deterioration.

Is the LM-L-4 Suitable for Marine Use?

The LM-L-4 is listed by Multiflex as a marine mechanical steering accessory for connecting a steering cable to an engine or rudder.

Because the current manufacturer specification identifies mild-steel construction:

• Inspect the arm regularly for corrosion
• Maintain its protective surface finish
• Remove salt deposits where practical
• Inspect the threaded adjustment area
• Check that the locking nut remains secure
• Check both rod ends
• Inspect the mounting bolt and Nylock nut
• Replace the arm if corrosion reduces its section or restricts movement

How Does the LM-L-4 Differ From the LM-L-1 and LM-L-2?

Multiflex LM-L-4 / L4

• Adjustable-length construction
• Mild-steel construction
  
• Permanently lubricated rod ends
• Dust-wiper boot included
• Nylock nut included
• 3/8in mounting bolt included
• approximate length of 330-360mm

Multiflex LM-L-1 / L1

• Standard link arm
• Stainless-steel construction
• Permanently lubricated rod ends
• Dust-wiper boot included
• Nylock nut included
• 3/8in mounting bolt included

Multiflex LM-L-2 / L2

• Standard link arm
• Mild-steel construction
• Permanently lubricated rod ends
• Dust-wiper boot included
• Nylock nut included
• 3/8in mounting bolt included

Is This a Complete Steering System?

No. The LM-L-4 is an engine or rudder connection kit only.

A complete mechanical steering system may also require:

• Steering wheel
• Steering helm
• Dashboard bezel
• Correctly measured steering cable
• Engine tilt tube
• Steering-cable support
• Clamp block or splashwell mounting kit
• Engine-specific attachment components
• Suitable transom and steering clearances

Construction and Design

• Multiflex adjustable steering link arm kit
• Model L4
• Manufacturer reference LM-L-4
• Current manufacturer-listed mild-steel construction
• Adjustable effective arm length
• Threaded adjustment section shown in manufacturer imagery
• Adjustment locking nut shown in manufacturer imagery
• Connects a mechanical steering cable to an engine or rudder
• Permanently lubricated rod ends
• Articulated steering connections
• Dust-wiper boot included
• Nylock nut included
• 3/8in / approximately 9.5mm mounting bolt included
• Suitable for many popular outboard engine brands, subject to fitment
• Multiflex cross-reference to Ultraflex A73SS
• Multiflex cross-reference to Ultraflex A74SS
• No hydraulic components
• No electrical components
• Supplier-reported approximate adjustment from 330mm to 360mm
• Manufacturer-published adjustment range not stated
• Surface coating or plating specification not stated
• Maximum steering load not stated
• Model-specific engine compatibility list not published

Installation and Safety

Before installing the Multiflex LM-L-4:

• Confirm that the product is the L4 / LM-L-4 adjustable link arm
• Verify the material of the supplied product where this is important
• Confirm compatibility with the steering cable output end
• Confirm compatibility with the engine or rudder attachment point
• Check that the required installed length falls within the available adjustment range
• Confirm that the 3/8in bolt suits the mounting hole
• Inspect the arm, rod ends, boot, nut and bolt
• Adjust the link arm without exceeding its usable engagement
• Do not extend the adjustment beyond the manufacturer's permitted limit
• Keep sufficient thread or tube engagement at the adjustment section
• Align the link arm without forcing the steering cable sideways
• Centre the engine relative to the steering-cable travel
• Tighten the adjustment lock securely
• Ensure the link-arm length cannot change during operation
• Fit the dust-wiper boot correctly
• Ensure the Nylock nut fully engages the bolt thread
• Follow the engine and steering-system tightening instructions
• Do not overtighten the articulated rod-end connections
• Confirm that both rod ends move freely
• Turn the steering fully from port to starboard
• Check clearance at both full steering locks
• Tilt the outboard fully upward and downward
• Repeat the clearance check throughout the engine tilt range
• Ensure the link arm does not contact the transom, splashwell or engine
• Confirm that the steering cable is not kinked, crushed or overextended
• Recheck the adjustment lock and mounting fasteners after the initial test
• Inspect the complete linkage regularly
• Replace corroded, bent, loose or damaged components
• Do not operate the boat if the linkage binds or has excessive free movement

Marine steering is a safety-critical system. Installation and adjustment should be completed according to the current Multiflex, steering-cable and engine instructions by a competent marine technician.

Key Features

• Multiflex LM-L-4 adjustable steering link arm kit
• Model L4
• Connects a steering cable to an outboard engine or rudder
• Designed for compatible mechanical steering systems
• Adjustable effective length
• Threaded adjustment section
• Adjustment locking nut
• Current manufacturer-listed mild-steel construction
• Suitable for many popular outboard engine brands, subject to fitment
• Permanently lubricated rod ends
• Dust-wiper boot included
• Nylock nut included
• 3/8in / approximately 9.5mm mounting bolt included
• Supplier-reported approximate adjustment from 330mm to 360mm
• Supplier-reported 9.5mm engine fixing
• Supplier-reported 9.5mm steering-cable fixing
• Multiflex cross-reference for Ultraflex A73SS
• Multiflex cross-reference for Ultraflex A74SS
• Cross-references must be verified before installation
• Steering cable supplied separately
• Steering helm supplied separately
• Steering wheel supplied separately
• Engine-specific hardware supplied separately unless expressly stated
• Material descriptions conflict between manufacturer and supplier sources
• Stainless-steel construction should be verified before publication
• Manufacturer adjustment range not published
• Maximum steering load not published
• LM-L-1 is the standard stainless-steel alternative
• LM-L-2 is the standard mild-steel alternative

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