16100-Z9L-811 Carburetor for Honda GCV170 GCV170LA HRN216 HRX217K6 Lawn Mowers

What It Is

The Honda 16100-Z9L-811 is an OEM carburetor assembly designed for Honda GCV170 and GCV170LA engines, commonly used on HRN216 and HRX217K6 lawn mowers. It meters the fuel-air mixture for combustion, directly replacing a clogged or failed original carburetor.

Fitment & Compatibility

Before purchasing, verify your engine’s exact model number (stamped on the engine shroud, near the spark plug). This carb fits:

• Engines: Honda GCV170, GCV170LA
• Mowers: Honda HRN216, HRX217K6 (and select HRX217 models with GCV170 engines)
• Deck size: Not relevant – fit is engine-specific, not deck size.
• OEM vs aftermarket: This is a genuine Honda part, not a generic knockoff. Aftermarket carburetors for these engines often have poor jetting or gasket fit.
• Measurements: The carburetor body and mounting flange match the factory unit exactly. No modifications needed.

What to check: Look for the engine serial number prefix. If your engine is GCV170 (any suffix), this carb works. If you have a GCV160 or GCV190, it will not fit.

Key Things to Know

• Installation difficulty: Moderate. You’ll need to remove the air filter housing, fuel line, and throttle linkage. Have a small screwdriver and pliers ready.
• Gaskets included: The carb comes with new gaskets and an O-ring. Do not reuse old ones – leaks are common.
• Fuel system prep: After installing, drain old fuel from the tank and replace the fuel filter (if equipped). Ethanol gum is often why the original failed.
• No adjustments needed: This is a fixed-jet carburetor; no idle or mixture screws to tune. If the mower runs rough after install, check for air leaks or debris in the fuel line.
• Common gotcha: The throttle linkage spring can be tricky to reattach. Take a photo before removal.

Should You Buy It

If your Honda GCV170-powered mower is hard to start, runs rough, or stalls after cleaning the old carb, this OEM replacement is the right choice. It’s a direct fit, includes necessary gaskets, and costs less than a shop rebuild. Skip aftermarket knockoffs – they rarely match Honda’s jetting. Best for DIYers comfortable with basic engine work.