RB-100 Carburetor Rebuild Kit with Primer Bulb

Key Features

• Comprehensive kit to restore original carburetor performance.
• Includes all necessary gaskets, diaphragms, and hardware for a standard overhaul.
• New primer bulb included for reliable fuel priming.
• Components are manufactured from high-quality paper and rubber for a precise fit and durable seal.

Replaces / Cross-Reference Part Numbers

• Carburetor Kit: ZAMA RB-100
• Primer Bulb: Walbro 188-13, 188-13-1; Stens 615-744, 49-027

Compatibility & Fitment

• Fits Stihl Models:
  • BG45 Blower
  • FS38 Trimmer
  • FS55 Trimmer
  • HS45 Hedge Trimmer
  • MM55 Tiller
  • 4137 Mini Tiller
• For ZAMA C1Q Series Carburetors:
  • C1Q-S69A
  • C1Q-S70
  • C1Q-S71
  • C1Q-S73
  • C1Q-S79
  • C1Q-S93
  • C1Q-S157

When to Replace

• Engine is difficult to start or will not start.
• Engine idles erratically, runs rough, or stalls.
• Fuel is leaking from the carburetor body.
• Noticeable loss of power or poor acceleration.
• Primer bulb is cracked, hazy, or does not return after being pressed.

Installation Tips

• Thoroughly clean all carburetor components with a dedicated solvent before reassembly.
• Note the orientation and order of gaskets and diaphragms during disassembly to ensure correct installation.
• Check and adjust the metering lever height to the manufacturer's specification.
• After installation, a final adjustment of the idle and mixture screws may be necessary for optimal performance.
• Inspect fuel lines for cracks or deterioration and replace if needed.