LIZAPUS 2PCS Primer Bulb & Fuel Line Kit Compatible with YardMax 170cc YG1550 YG1650 Lawn Mower

What It Is

This kit includes two primer bulbs and a fuel line section, designed to replace the worn-out priming system on YardMax 170cc lawn mowers. It restores the bulb’s ability to draw fuel into the carburetor for easier cold starts.

Fitment & Compatibility

Check your mower’s model number—this fits YardMax YG1550 and YG1650 (170cc engines). Measure your existing fuel line inner diameter; the included line is 3/16-inch ID (common for these models). If your mower uses a different ID or has a separate fuel filter, you’ll need to buy that separately. Not compatible with YardMax models using a primer solenoid or electric fuel pump.

Key Things to Know

• Quality: Bulbs are rubber with a firm feel—should last 2–3 seasons with typical use. Fuel line is standard vinyl; replace both at once to avoid future leaks.
• Installation: Easy—remove old bulb, pull off fuel line, push new line onto carburetor nipple, and snap new bulb into housing. No tools required, but a small screwdriver helps if the line is stubborn.
• Gotcha: The kit includes two bulbs, but most mowers only use one. Keep the spare for later. The fuel line may be slightly longer than needed; trim to match your existing length for a clean fit.
• No filter included: Your mower’s inline fuel filter (if equipped) must be reused or replaced separately.

Should You Buy It

Yes, if your YardMax 170cc mower has a cracked, hard, or collapsed primer bulb and you want a quick, low-cost fix. It’s a simple swap that solves starting issues without replacing the entire carburetor. Skip it if your mower uses a different primer system or if the carburetor itself is clogged (you’ll need a carb rebuild kit instead).