Carburetor MIA11474 for John Deere LA105 42-Inch 19.5HP Mower with Briggs 31-Series Engine
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
- John Deere LA105 42-inch 19.5-hp applications with a matching Briggs 31-series engine
- Select John Deere L107, L108, and L115 applications using the same carburetor
- Select John Deere LA115 and LA125 applications using the same carburetor
- Select John Deere D110 applications using the same carburetor
- Briggs & Stratton 31A507, 31A607, 31A707, and 31A777 applications after type/code verification
Product Overview
A single-cylinder lawn tractor that surges, runs only with choke, floods, or loses power when the 42-inch deck is engaged may have a carburetor issue after ignition, compression, valve clearance, fuel supply, and governor checks. This replacement is intended for matching Briggs 31-series engines.
John Deere model names can use different engines. Confirm the engine model/type/code—such as an applicable 31A507, 31A607, 31A707, or 31A777—and compare the solenoid, linkage, and flange.
Key Features & Performance
- Replacement carburetor for matching John Deere lawn tractors
- Cross-referenced to MIA11474-family applications
- Supports compatible Briggs 31-series single-cylinder engines
- Aftermarket alternative for damaged or contaminated assemblies
Replaces Part Numbers
- MIA11474
- MIA12509
- MIA11520
- 697216
- 792036
Common Uses
- Correcting choke-only running or surging
- Repairing fuel leakage into the intake or crankcase
- Restoring power under mower-deck load
- Replacing a damaged fuel-shutoff solenoid or carburetor body
Technical Specifications
- Product Type: Lawn-tractor carburetor
- Compatible Brand: John Deere with matching Briggs engine
- Primary Model: LA105 42-in / 19.5-hp matching application
- Replacement Type: Aftermarket
Installation & Fitment
- Verify tractor serial and engine model/type/code
- Check valve clearance, spark, compression, and fuel supply
- Match the solenoid connector and linkage arrangement
- Replace fuel-diluted oil and test safely with the deck engaged
Compatibility Notice
Tractor model alone is insufficient. Engine manufacturer, model/type/code, original part number, and carburetor design must all match.
Frequently Asked Questions
Q: Will this fit every LA105? A: Only LA105 units with the matching Briggs engine and carburetor references.
Q: Can fuel in the oil come from the carburetor? A: Yes. Stop operation, correct the leak, and replace contaminated oil.
Q: Why check valve clearance? A: Incorrect clearance can cause hard starting and power loss that resemble fuel trouble.
Part Summary
keywords: John Deere LA105 carburetor, MIA11474 replacement, MIA12509 carburetor fit, Briggs 31A507 fuel part, LA105 runs only on choke, 42 inch mower carburetor repair, 697216 aftermarket carburetor, John Deere lawn tractor surging
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.