Honda Power Equipment GX25 owner manual Spark Plug Spark Plug CAP

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2.Remove any dirt from around the spark plug area.

3.Remove the spark plug cap and use the proper size spark plug wrench to remove the spark plug.

If the engine has been running, the muffler will be very hot. Be careful not to touch the muffler.

SPARK PLUG

SPARK PLUG CAP

4.Visually inspect the spark plug. Discard the spark plug if there is apparent wear, or if the insulator is cracked or chipped. Clean the spark plug with a wire brush if it is to be reused.

5.Measure the plug gap with a feeler gauge. Correct as necessary by bending the side electrode.

The gap should be:

0.600.70 mm (0.0240.028 in)

0.600.70 mm

(0.0240.028 in)

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Contents GX25 Page Safety Instructions Safety Indication Location Safety InstructionPRE-OPERATION Check Multi Viscosity Standard/Pump type Tiller type Fuel Gasolines Containing Alcohol Retightening bolts and nuts Starting the Engine Fuel Return Tube Priming Pump High altitude operation Operation Stopping the Engine Maintenance Regular Service Period Maintenance ScheduleOil change Engine OIL Capacity DisassemblyAir cleaner service Never use a spark plug of incorrect heat range Spark plug service Recommended spark plugSpark Plug Spark Plug CAP Page Spark Arrester Muffler Spark Arrester Screen Fuel Filler Neck Engine OIL Filler CAP Fuel Filler Neck Engine OIL Filler CAP Cooling fin service TRANSPORTING/STORAGE Page When it is hard to start the engine TroubleshootingWhen the engine will not start Standard Tiller Pump SpecificationsMemo

GX25 specifications

Honda Power Equipment GX25 is a compact and highly versatile engine that is part of Honda's renowned GX series, ideal for a variety of outdoor power equipment. This lightweight, yet powerful engine is designed with efficiency and durability in mind, making it a popular choice for both commercial and residential applications.

One of the standout features of the GX25 engine is its 4-stroke design. Unlike many traditional 2-stroke engines, which require oil to be mixed with fuel, the GX25 operates on pure gasoline. This not only results in lower emissions, making it an environmentally friendly option, but also simplifies maintenance as there's no need for oil mixing. The engine's overhead cam design contributes to its efficiency, allowing for smoother operation and better fuel economy.

The GX25 engine boasts a displacement of 25 cc, which enhances its power output while maintaining its compact size. With a maximum output of around 1.0 horsepower at 7,000 RPM, this engine provides ample power for various applications, such as string trimmers, blowers, and more. Its lightweight design, at approximately 3.8 kg (8.4 lbs), makes it easy to handle, reducing operator fatigue during extended use.

In terms of reliability, the GX25 is equipped with Honda’s proven engineering, offering a long service life even under heavy usage. The engine features an integrated ignition system for quick starting and a spark arrestor that enhances safety during operation, especially in brushy areas where fire hazards may be a concern. Additionally, it is designed with a low vibration system, which further enhances comfort for the user.

The GX25 also includes advanced technologies such as a vortex combustion chamber, which optimizes fuel efficiency and improves power output while reducing emissions. Its ability to start easily in various conditions, along with its excellent fuel efficiency, makes it a preferred choice for professional landscapers and homeowners alike.

In summary, the Honda Power Equipment GX25 engine encapsulates a perfect blend of power, efficiency, and reliability. Its lightweight, compact design, coupled with innovative technologies, sets a standard in the industry, making it an exceptional choice for those seeking a high-performance engine for their outdoor power equipment needs. Whether for commercial use or home gardening, the GX25 delivers performance that stands the test of time.