Subaru Robin Power Products DY41, DY35, DY30 manual Operation

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2.Operation

1)Starting

When the speed control lever is set on the side of high speed, the governor spring is pulled via the control link.The

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governor levers 1 and 2 are pulled by the tension of the governor spring. The control rack of injection pump is pushed toward “fuel increase.” The governor lever 1 has an oblong hole, and thegovernor lever 2 moves to the extent of this oblong hole by means of the start spring tension. The control rack of injection pump is pushed toward the maximum of ”fuel increase.” This movement within the extent of oblong hole is called “revolution playing angle,” for which we will explain later.

2)Afterstartingandduringoperation

When engine starts up, centrifugal force acts on the flyweight and it pushes the governor sleeve. The governor yoke,

governor shaft, and governor lever 2 are assembled in one piece, and accordingly the motion of the governor sleeve pushes the control rack of the injection pump toward “fuel decrease.’’ The governor leveragain moves to the extent of the oblong hole. Thereafter, the governor lever 1 and the governor lever 2move simultaneously and are balanced at the specified revolution. Suppose that a loadis put suddenly on, the fuel supplyis as it is at that instance, accordingly the fuel supplyis insufficient against the load.As a resut, engine revolutiondecreases, which meansthat the centrifugal force on the flyweight decreases. Then the governor lever 2 moves to the position where it balances the tensionof the governor spring. The control rack of injection pumpis pushed toward “fuel increase” and engine revolution revives.

3)Stopping

Thegovernorplaysa role exactly reverse to that of starting. When the speed control leveris set at the position of “Stop,” it pushes the control rack of injection pump toward“No Injection” and the engine stops.

3.“Revolution PlayingAngle”

This mechanism is to supply more fuel than the maximum supply for normalhigh speed operation. This mechanism is devel- oped for the purposeof improving starting ability.

Required amount of fuel supply is set by the governor lever 1. The governor lever 1 has an oblong hole, to which pins of the governor lever 2 is fitted. As the start spring is pulling the governor lever 2, it moves toward the arrow mark A. Then the control rack of the injection pumpis pushed to “Maximum supply.” The angle the governor lever 2 moves within the extent of oblong holeis called ‘Revolution Playing Angle .”

At the time of starting, thegovernor does not function as yet and thegovernor lever 2 functions.However, during operation, the governor functions and accordingly the governor lever 2 moves toward the arrow mark B within the extent of oblong hole. The governorlevers 1 and 2 incroporate each other andpushes the control rack of the injection pump.

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Contents Page EY45V Crankshaft ? m Page Performance Model DY35DtB Generaldescription of ENGlME Construction 2 Cylinderhead 8ROCKER ARM 1 TappetRocker Cower F Lubrication SystemCooling System Combustion System Sectional View of Engine \ \ Disassembly and Reassembly Special Tools3DISASSEMBLING Sequence PcsSe- Item quence L2L Procedures Oil pump Remarks Bolts, nuts etc. used Snap ring Remove the snap ring Be sure not to miss 22 7T bolt pcs 12 bolt pcs Install the flywheel 5 7T bolt, . . . , pcs Mm nut pcs T round 10 x 30 bolt pcs Mm nut . . . . . . . . . . . . . . .2 pcs Fuel Quality Of FuelGeneral Description of Auxiliary Gadgets and Parts Fuel Injection Pump MechanismRelation between the plunger and the rack Injectiontiming andeffectivestarting 51 kg/mm Fuel InjectionpumpNozzle Holder Fuel Injection Nozzle HolderPush further and check whether or not the fuel fog Body of nozzle with your fingers and then let 3GOVERNORMECHANISM and Operation Mechanism Operation $=I OIL FilterCirculation Installation Checks and Corrections Tables of Correction Standards Itemstandard005 Description 36.5Maintenance and Storing Checks and maintenance Reasons for requiring them 12 /2 Reducer M8 x Structure Of 1/2 Reducer 12-2-1INPUTSHAFT 12 3 1 Disassembly Sequence Sws12-5 Page Shaft Page Industrial Engines

DY41, DY30, DY35 specifications

Subaru Robin Power Products have built a solid reputation in the realm of portable engines and generators, particularly with their DY35, DY30, and DY41 models. These engines are extensively used for various applications, ranging from construction to agricultural equipment, owing to their reliability and efficiency.

The Subaru DY35 engine exemplifies performance with a displacement of 35cc. Its lightweight design ensures easy portability, while its robust construction provides durability in demanding environments. Featuring a two-stroke cycle, the DY35 offers a high power-to-weight ratio, making it ideal for handheld equipment and compact machinery. Key characteristics include its advanced electronic ignition system that promotes easy starting and reliable operation. The DY35 also boasts superior fuel efficiency, which translates to lower operational costs over time.

Moving on to the DY30, this engine is designed with versatility in mind. It has a slightly smaller displacement of 30cc, making it a great choice for various power tools and smaller machinery. The DY30 is known for its excellent torque delivery, which allows users to tackle challenging tasks without the need for frequent refueling. One of its standout features is the automatic lubrication system that keeps the engine running smoothly while minimizing wear and tear. This feature significantly extends the engine’s life, making it a favorite among users looking for long-term performance.

The DY41 takes a step up in power with a displacement of 41cc, making it suitable for heavier-duty applications. Designed for larger equipment, the DY41 is renowned for its high torque and robust construction. It also includes an innovative cooling system that effectively dissipates heat, ensuring optimal engine performance in prolonged usage scenarios. The DY41 is equipped with advanced vibration-dampening technology, which enhances user comfort and reduces fatigue during operation.

Each of these Subaru Robin engines incorporates fuel-efficient technologies that reduce emissions and comply with environmental regulations. They are built to withstand the rigors of demanding work environments while providing reliable power. With their distinct features and durable designs, the DY35, DY30, and DY41 engines continue to be sought-after choices for professionals and hobbyists alike, underscoring Subaru's commitment to innovation and quality in power products.
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