5 Primer Bulbs 791-181701 for Echo Stihl Roybi Cub Cadet Troy Bilt Trimmers

Product Overview

This primer bulb is a direct replacement for use in string trimmers and other handheld outdoor power equipment. It provides reliable fuel priming to help start the engine quickly and efficiently. Ideal for homeowners and professionals maintaining Echo, Stihl, Ryobi, Cub Cadet, or Troy Bilt trimmers.

Key Features & Performance

• Constructed from flexible rubber compound for long service life
• Direct fit for multiple trimmer models using OEM part 791-181701
• Simple push-and-release operation for consistent fuel delivery
• Resistant to fuel and weather deterioration
• Pack of 5 bulbs provides backup or multipurpose use

Fitment & Compatibility

• Compatible with selected Echo, Stihl, Ryobi, Cub Cadet, and Troy Bilt trimmers
• Replaces OEM part numbers 791-181701, 791181701
• Verify specific model compatibility before purchase

Common Uses

• Replacing worn or cracked primer bulbs on gas string trimmers
• Used on weed eaters, brush cutters, and handheld blowers
• Ideal for maintenance during spring tune‑ups or engine start issues

Technical Specifications

• Part Number(s): 791-181701, 791181701
• Material: Rubber
• Quantity: 5 bulbs per pack

Frequently Asked Questions

Q: Will this primer bulb fit my Stihl FS 80 R? A: It fits many Stihl trimmers using the 791-181701 part, but please check your model’s OEM part number for exact compatibility.

Q: Are these bulbs universal for all trimmer brands? A: No, they are designed specifically for the listed brands and models that use the 791-181701 style bulb; other brands may require different part numbers.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.