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  4. Mountability of GB181 (almost the same size) with 7 horsepower (overall length only +17.5) GB SERIES (Willbe Co., Ltd.)
Mountability of GB181 (almost the same size) with 7 horsepower (overall length only +17.5) GB SERIES-GB221
Mountability of GB181 (almost the same size) with 7 horsepower (overall length only +17.5) GB SERIES-Willbe Co., Ltd.

Mountability of GB181 (almost the same size) with 7 horsepower (overall length only +17.5) GB SERIES
Willbe Co., Ltd.

About This Product

■4 stroke engine

The 4-stroke engine that meets the needs of all professionals is a general-purpose engine that brings together MEiKi POWER's technological capabilities. While improving the basic performance of high output and high durability, it also achieves low noise and vibration. It continues to evolve over time, with improvements made to make it even easier to use.

■Features

・7 horsepower (overall length only +17.5) with GB181 installation (almost the same size) ・Can be equipped with a balancer (excellent vibration damping performance even at 7PS)

■POINT01 Easy starting (1) - Light pulling force

We have further evolved our unique "mechanical decompression mechanism" and achieved a management method with less variation, allowing you to experience light pulling force with all engines. Recoil pulling force is reduced by approximately 15% compared to conventional models. This makes it possible to start smoothly without feeling much of a lumpy feeling.

■POINT02 Easy starting (2) - Improved starting performance

Optimum settings for the newly designed carburetor and optimal operation synchronization of the governor link system have been achieved, and the ignition coil has improved performance by 20% compared to our previous model, achieving quick start-up. The industry's highest standard carburetor corrosion protection treatment is applied to all machines, reducing fuel corrosion during long-term storage and improving restartability.

■POINT03 Ample output and excellent governor characteristics

Maximum output has been improved by optimizing the cam profile and reducing internal friction (GB131 and GB181 are approximately 5% more powerful than our previous models), delivering superior work performance. The newly designed governor system brings out the full power of the engine and allows for stable operation not only at no load, but also throughout the entire rotation range.

■Compact design yet high output and torque

A tilted engine with a compact design, yet with plenty of extra power and torque, L-type 1/2 reduction specification is standard in the product lineup (twice the torque) *Using the product outside the recommended output range may cause premature damage or trouble, so please select the optimal horsepower.

  • Product

    Mountability of GB181 (almost the same size) with 7 horsepower (overall length only +17.5) GB SERIES

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1 Models of Mountability of GB181 (almost the same size) with 7 horsepower (overall length only +17.5) GB SERIES

Image Part Number Price (excluding tax) Cylinder x inner diameter mm Dry mass kg Lubricating oil used Fuel used Rotation direction Starting method Industrial cleaner Maximum torque L type N m/rpm Maximum torque P type N m/rpm Maximum output kW (PS) Engine dimensions Overall width mm Engine dimensions Overall length mm Engine dimensions Overall height mm Vaporizer Deceleration method Lubrication method Lubricant amount dm3 (L) Spark plug Ignition method Fuel tank capacity DM3 (L) Total displacement cm3 (cc) Speed ​​control method Continuous rated output kW/rpm (ps/rpm) Format
Mountability of GB181 (almost the same size) with 7 horsepower (overall length only +17.5) GB SERIES-Part Number-GB221

GB221

Available upon quote

1-72×53

17.2

Engine oil SE grade or above SAE #30, cold SAE #20

Unleaded gasoline for automobiles

Left (viewed from the shaft output side)

Recoil starter type (cell starter type optional)

Semi-wet polyurethane foam

27.5 (2.80) /1400

13.7 (1.40) /2800

5.1 (7.0)

366.5

326

354

Float, butterfly valve, side suction type

P type Direct connection type L type 1/2 camshaft reduction type

Forced splash type

0.55 (0.55)

NGK BP6HS

Non-contact magnetic ignition

3.6 (3.6)

215 (215)

Centrifugal weight type

3.7/3,600 (5.0/3,600)

Air-cooled 4-stroke inclined horizontal shaft OHV gasoline engine

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Willbe Co., Ltd.

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