MOTOALL Carburetor and Air Filter Kit for Generac 4000XL - 0C1535ASRV Style Complete Tune-Up Kit with Gaskets & Spark Plug

The MOTOALL 0C1535ASRV carburetor and 78601 air filter kit is a full replacement set designed to restore fuel delivery and air filtration for 4000XL-series portable generators.

If your generator is running rough, flooding, idling poorly, or losing power, worn carburetor components and a clogged air filter are common causes. This kit bundles a direct-fit 0C1535ASRV-style carburetor with gaskets, fuel line parts, a spark plug, air filter and a switch—everything needed to service Generac 4000XL, 4000 EXL and many compatible small engine models. Before installation, compare the components in this kit to your existing parts to confirm fitment.

Will this carburetor and filter fit my Generac 4000XL or compatible generator?

The kit is made to replace the 0C1535ASRV-style carburetor and 78601-series air filters used on 4000XL and related models. Fitment covers many part numbers commonly used across Generac and similar small engines; however, variations exist between model years.

• Compatible with 0C1535ASRV, 97747, C1535 and many OEM reference numbers.
• Air filter replaces 78601GS and related 078601/078602 references.
• Compare our photos and part shapes to your old carburetor before ordering.

What components are included and how do they help during a service?

This comprehensive service kit combines the carburetor with several consumables so you can complete a basic tune-up in one visit. The included items reduce the chance of repeated visits and make the job faster for DIYers and technicians.

• 1 carburetor, 2 gaskets and 1 fuel tank valve for secure resealing.
• Fuel filters, clamps and a fuel line to refresh the fuel delivery path.
• 1 air filter and 1 spark plug to restore breathing and ignition performance.
• 1 switch for electrical control where applicable.

How will installing this kit affect engine performance?

Replacing a degraded carburetor and clogged air filter typically leads to more stable idling, improved throttle response and fewer start issues. Results depend on correct installation, clean fuel, and overall engine condition.

• Restores consistent air-fuel mixing for smoother combustion.
• Fresh filter improves airflow and helps prevent debris ingestion.
• New fuel lines and filters reduce blockages that cause stalling.

Is installation difficult and what should I prepare before starting?

Basic mechanical skill and standard hand tools are usually sufficient for installation. Work in a well-ventilated area, drain or isolate the fuel system if needed, and keep replacement gaskets and clamps handy to prevent leaks.

• Turn off spark and disconnect the battery or ignition for safety.
• Drain fuel or clamp the fuel line to avoid spills during removal.
• Use the supplied gaskets, clamps and new fuel filter to ensure a tight, leak-free assembly.

Who this kit is for: The MOTOALL 0C1535ASRV carburetor and 78601 air filter kit is ideal for owners and technicians maintaining Generac 4000XL/4000 EXL portable generators and compatible small engines that list the referenced part numbers. It suits DIY mechanics wanting a single package with all common replacement parts, as well as service shops that need a rapid, cost-effective repair option. If your machine shows fuel delivery or breathing-related symptoms, this kit supplies the parts typically required to diagnose and repair those issues—just verify fitment against your original components before purchase.