MSTEM Guide – Install Front End Steering System Assembly

Step 1: Mount and Secure the Steering Shaft

• • Insert the spud at the bottom of the shaft into the uniball within the steering yoke of the frame.
    
    • • 1.1: Install the washer and nut, then tighten them to secure the shaft base.

• • Remove the steering column bolt from the plastic support and prepare to insert it between the frame uprights.
    
    • • 1.2: Set the column position using the top hole of the frame and the top hole of the support as the typical setting. Note: This can be adjusted later for driver comfort.
    
    
    • • 1.3: Install the upper driver fairing panel bracket during this step to avoid doing it later.
    
    
    • • 1.4: Slide the bolt through the assembly (frame uprights, support, and bracket) to hold everything together.
    
    
    • • 1.5: Tighten the bolt to secure the steering column assembly.

Installing Tie Rods

Step 2: Attach Tie Rods to the Steering Column

• • The tie rods come with pre-installed hardware. Take the side with two bushings (above and below the heim joint) and install it into the steering column.
    
    • • 2.1: Use the middle height hole as the standard setting for the first tie rod.
    
    
    • • 2.2: Repeat the process for the second tie rod on the opposite side of the column, using the same middle height hole.
    
    
    • • 2.3: Note: The spindle side of the tie rods will be attached after installing the spindles in the next step.

Installing Spindles

Step 3: Install Spindles and Connect Tie Rods

• • In your kit, locate the two sets of spindle bolts with 0-degree eccentric bushings and ride height spacers.
    
    • • 3.1: Starting from the top, insert a bushing into the frame.
    
    
    • • 3.2: Align the spindle bolt to drop down through the top bushing.
    
    
    • • 3.3: Place the thin and medium spacers above the spindle and slide them up the bolt while holding it with your hand.
    
    
    • • 3.4: Grab the spindle and slide the bolt down through it.
    
    
    • • 3.5: Position the thickest spacer at the bottom, under the spindle.
    
    
    • • 3.6: Push the spindle bolt through until the head stops against the frame.
    
    
    • • 3.7: Insert the lower bushing into the frame underneath the spindle.
    
    
    • • 3.8: Install the M8 nut onto the spindle bolt.
    
    
    • • 3.9: Use a 6mm Allen key and a 13mm wrench to secure the spindle to the frame.
    
    
    • • 3.10: Repeat sub-steps 3.1–3.9 for the opposite side of the kart.
    
    
    • • 3.11: Attach the spindle side of the tie rods (from Step 2) to the spindles.
        
        • • 3.11.1: On the latest spindle version, use the single hole at the bottom as the standard Ackermann setting.

Installing Steering Hub and Steering Wheel

Step 4: Install the Steering Hub and Wheel

• Slide the steering wheel hub onto the shaft, aligning the hole in the side of the hub with the mounting hole in the shaft.
  
  • • 4.1: Place the M6 bolt through the hub to secure it to the shaft.
      
      • • 4.1.1: Position the bolt so the head is down within the hole of the hub (front side), with the washer and nut against the flat side (back side).
  
  
  • • 4.2: Install the steering wheel using the three M6 conical bolts with washers.
  
  
  • 4.3: Fully tighten the steering wheel to the hub to ensure it’s safe, secure, and free of wobble.