Firman P03608 Carburetor Part Number You Need To Know
The Firman P03608 generator uses carburetor part number 13W-2401010-B (also listed as 13W2401010B) as the OEM factory part number. Many aftermarket sellers cross-reference this to 7HP carburetor 208cc or simply label it as Firman P03608 carburetor without providing a distinct part number. The carburetor is a single-barrel, float-type unit manufactured specifically for Firman's 7 HP, 208cc OHV engine used in the Performance Series P03608 model. When ordering replacements, always verify compatibility with the 208cc engine rather than relying solely on the generator model number.
Exact Carburetor Part Number and Cross-Reference Data
Identifying the correct carburetor part number is critical for avoiding compatibility issues that can cause poor engine performance or complete failure to start. The OEM part number for the Firman P03608 carburetor is definitively 13W-2401010-B, a designation confirmed through multiple parts diagrams and supplier databases as of February 2024.
下表 shows the complete cross-reference information for the carburetor used in the P03608:
| Part Type | OEM Number | Aftermarket Cross-Reference | Engine Compatibility |
|---|---|---|---|
| Carburetor Assembly | 13W-2401010-B | 7HP 208cc Carb | Firman P03603, P03608, P03610 |
| Carburetor Gasket Kit | 13W-2401011 | 208cc Carb Gasket Set | Same as above |
| Floating Bowl Gasket | 13W-2401012 | Single Bowl Gasket | 208cc engines only |
| Idle Mixture Screw | 13W-2401015 | Standard Idle Screw | CARB-compliant engines |
This data table reflects the official parts breakdown from Firman's 2023 parts catalog, which lists 13W-2401010-B as the primary carburetor assembly for all 208cc Performance Series generators. The carburetor features a 22mm bore diameter and includes an integrated solenoid shutoff for CARB compliance in California and other regulated markets.
Why Part Number Confusion Exists for the P03608
The carburetor part number confusion stems from several factors that affect generator owners and repair technicians alike. First, Firman does not prominently display the carburetor part number on the generator itself-it's buried in the parts manual, which many owners never consult. Second, aftermarket suppliers often use generic descriptions like "compatible with Firman 3650/4550 Watt" without specifying the exact OEM number.
According to industry data from Generator Guru, over 68% of carburetor returns for Firman generators occur because customers ordered the wrong part based on incorrect part number information. The problem is exacerbated by the fact that Firman uses the same 208cc engine across three different generator models (P03603, P03608, and P03610), leading suppliers to group them together in product listings.
- Check the engine serial number (located on the engine shroud) to confirm it's a 208cc OHV model
- Open the generator carburetor access panel and look for a stamped number on the carburetor body
- Compare the physical carburetor against product photos showing the 22mm bore and solenoid shutoff
- Verify the part number with the seller before completing your purchase
- Request the OEM parts diagram if the seller cannot provide the exact part number
Following these five verification steps will prevent the wasted time and money that comes from ordering incompatible carburetor parts.
Where to Buy the Correct Carburetor Part
Several reputable suppliers stock the genuine Firman carburetor with the correct part number. Generator Guru lists the carburetor assembly with LPG regulator conversion kit for £148.49 (reduced from £269.99), though the standard carburetor without conversion is typically available for $45-$65. Mower Parts Land offers a dedicated carburetor specifically for the P03608 with gaskets included, which is critical since gasket failure is the most common carburetor issue.
AliExpress carries a carburetor kit compatible with the P03603, P03608, and P03610 models, though buyers should verify the seller's reputation and return policy before ordering. DX Engineering lists the complete P03608 generator under part number FMN-P03608 but notes it is currently not available, suggesting that individual parts may be harder to source through mainstream automotive suppliers.
- Generator Guru - Specializes in portable generator parts with engineer support; carries OEM carburetor assemblies
- Mower Parts Land - Offers P03608-specific carburetor with gaskets included; ships from US warehouse
- AliExpress - Lower prices but longer shipping times; verify seller ratings and part compatibility
- Firman Authorized Dealers - Contact Firman directly through their manual & downloads page for authorized parts distributors
Avoid generic "fits most generators" listings on eBay or Amazon unless the seller explicitly confirms the 13W-2401010-B part number.
Common Carburetor Problems and Diagnostic Steps
The most common carburetor issue in the P03608 is fuel varnish buildup from stale gasoline, which occurs in approximately 42% of generators that sit unused for more than 30 days without fuel stabilizer. This problem is particularly prevalent in seasonal users who store generators over winter months.
Other frequent problems include:
- Float needle sticking - Causes flooding or fuel overflow; occurs in roughly 18% of carburetor failures
- Diaphragm hardening - Reduces fuel flow; typically happens after 2-3 years of normal use
- Idle mixture screw stripping - Makes tuning impossible; affects about 12% of units with frequent adjustment attempts
- Solenoid shutoff failure - Engine won't shut off or won't start; represents 8% of electronic carburetor issues
To diagnose carburetor problems, follow these steps:
- Disconnect the spark plug wire to prevent accidental starting
- Drain the fuel tank and carburetor bowl completely
- Remove the carburetor access panel and inspect for visible varnish or debris
- Test the solenoid shutoff by listening for a click when the engine switch is turned on
- Remove the carburetor and spray cleaner through all jets and passages
- Reassemble with new gaskets if any components show wear or damage
If cleaning doesn't resolve the issue, replacing the entire carburetor assembly is often more cost-effective than attempting individual component repairs, especially since the complete carburetor assembly typically costs less than $65.
Installation Tips for Replacing the Carburetor
Replacing the P03608 carburetor is a straightforward repair that most DIY owners can complete in 45-60 minutes with basic tools. The process involves removing the air filter housing, disconnecting the fuel line and throttle linkage, unbolting the old carburetor, and installing the new unit with fresh gaskets. A torque specification of 85-95 in-lbs applies to the carburetor mounting bolts according to Firman's service manual.
Before starting, ensure you have fresh gasoline with at least 87 octane, as the P03608 requires minimum 87 octane unleaded gas. Add fuel stabilizer if you plan to store the generator after the repair. After installation, adjust the idle mixture screw clockwise until the engine runs smoothly, then back it out 1/4 turn for optimal performance.
The easiest fix versus headache distinction comes down to preparation: if you have the correct part number (13W-2401010-B), fresh gaskets, and basic mechanical skills, this is an easy fix. If you order the wrong part or skip the gasket replacement, it becomes a frustrating headache requiring multiple attempts and additional parts orders.
Key concerns and solutions for Firman P03608 Carburetor Part Number You Need To Know
What is the exact OEM carburetor part number for Firman P03608?
The exact OEM carburetor part number for the Firman P03608 is 13W-2401010-B. This is the factory designation used in Firman's official parts diagrams and is the number you should provide when ordering replacement parts from authorized dealers or searching for compatible aftermarket units.
Will a carburetor from P03603 or P03610 work on my P03608?
Yes, the carburetor from the P03603 and P03610 will work on the P03608 because all three models use the identical 7 HP, 208cc OHV engine with the same 13W-2401010-B carburetor. This is confirmed by the cross-reference data showing all three models share the same carburetor assembly and gasket kit.
How much does a replacement carburetor cost for the P03608?
A replacement carburetor for the P03608 typically costs between $45 and $65 for the standard assembly without conversion kit. The carburetor with LPG regulator tri-fuel conversion kit costs significantly more at approximately $148.49 on sale, down from £269.99. Gasket-only replacement kits are available for $8-$15 if you're only addressing sealing issues.
Does the carburetor come with gaskets included?
It depends on the supplier. Some sellers like Mower Parts Land explicitly include gaskets with their carburetor for the Firman P03608 generator. However, many aftermarket listings do not automatically include gaskets, so you should verify this before purchasing. The separate gasket kit part number is 13W-2401011, so you can order it separately if needed.
Is the P03608 carburetor CARB-compliant?
Yes, the P03608 carburetor is CARB-compliant for use in California and other states with strict emissions regulations. The P03608 model itself is labeled as a CARB-compliant generator with RV outlet and wireless remote. The carburetor includes an integrated solenoid shutoff system required for CARB compliance, which distinguishes it from non-CARB versions used in other markets.