Carburetor Compatible for Briggs and Stratton 19.5 HP Model 42E707 Type 2631-E1 No: 19306 693480 Craftsman LT1000 917270821 V-Twin

What It Is

This is a complete aftermarket carburetor assembly designed to replace the original on Briggs & Stratton V-twin engines, specifically the 19.5 HP Model 42E707 Type 2631-E1. It fits Craftsman LT1000 and similar lawn tractors (e.g., model 917270821) that use this engine, restoring fuel delivery when the original carb clogs or fails.

Fitment & Compatibility

Before buying, verify these three things:

• Engine model/type: Must match “Briggs & Stratton 42E707 Type 2631-E1” and code 19306 or 693480. Check the engine shroud sticker, not the mower deck model.
• Mower model: Confirmed for Craftsman LT1000 (model 917270821) and many other tractors using this B&S V-twin. Not universal—cross-check your mower’s engine spec.
• OEM vs aftermarket: This is a non-OEM part. It includes gaskets, but the fuel bowl and float may differ slightly from original. Measure mounting bolt spacing (typically ~2.5 inches center-to-center) and compare to your old carb.

Key Things to Know

• Quality: Generally good for the price, but some units arrive with loose screws or debris in the bowl. Inspect and clean before install.
• Installation difficulty: Moderate. You’ll need to remove the air filter assembly, fuel line, and throttle/governor linkage. Take photos before disconnecting wires or springs.
• Common gotchas: The choke linkage may need bending to align properly. The included gaskets are thin—use a small amount of grease to hold them in place during reassembly. Replace the fuel line filter if it’s old.
• Adjustment: After install, you may need to tweak the idle mixture screw (typically 1.5 turns out from lightly seated). Expect a short break-in period of 1–2 hours before the engine smooths out.

Should You Buy It

This is a solid budget fix if your original carb is beyond cleaning (varnish, stripped threads, or warped body). It’s ideal for DIYers comfortable with basic engine work who want to avoid the $80–100 OEM replacement. Not for you if you need exact OEM fit with zero tinkering, or if your engine has other fuel issues (bad pump, clogged tank). For the price, it’s worth trying before buying a new mower.