The Multiquip 99101ZF50750 Main Jet #78 is a genuine OEM carburetor main jet designed for GAC3.6HZ and GA-3.6 portable generators. As a direct OEM replacement, this jet is manufactured to the exact size and flow specification required to maintain correct air-fuel mixture in the carburetor. Sourced from Multiquip, part 99101ZF50750 ensures a proper fit with no guesswork on sizing or compatibility. If your GAC3.6HZ or GA-3.6 generator is running lean, surging under load, or exhibiting fuel delivery issues, replacing the main jet with the correct OEM piece is the right first step.
Key Features
- Exact Orifice Sizing: — Calibrated to the #78 specification for precise fuel metering — not an approximation, but the exact jet your carburetor was engineered around.
- Genuine OEM Component: — Sourced directly from Multiquip, ensuring the part matches the original carburetor design with no substitutions or dimensional drift.
- Drop-In Carburetor Fit: — Threads directly into the carburetor body of the GAC3.6HZ and GA-3.6 generator models, replacing the original jet without modification.
- Verified Generator Fitment: — Confirmed for GAC3.6HZ and GA-3.6 Multiquip portable generators — use part number 99101ZF50750 to verify against your unit's parts list.
- Restored Engine Performance: — A correctly sized main jet keeps combustion consistent across the RPM range, preventing surging, rich running, or power loss under generator load.
- Fuel System Integrity: — Running the wrong jet size can cause unsafe engine operation or damage to the carburetor and combustion chamber — the correct OEM jet eliminates that risk.
The main jet is a small but critical component inside the carburetor that controls the volume of fuel delivered to the engine at mid to full throttle. Its orifice diameter — in this case, #78 — is precisely sized to produce the correct air-fuel ratio for the engine's displacement and operating speed. When a main jet becomes clogged, worn, or is replaced with the wrong size, the engine will run poorly: symptoms include surging, loss of power, excessive fuel consumption, or difficulty maintaining stable output voltage on a generator. Replacing it with the correct OEM jet restores accurate fuel delivery and stable engine operation.
DHS Equipment stocks genuine Multiquip OEM parts and is ready to help you confirm fitment or locate additional components for your equipment. Contact our parts team for assistance.
Part Details
| Part Number | 99101ZF50750 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Main Jet #78 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Portable Generators | GAC3.6HZ |
| Portable Generators | GA-3.6 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
