7-4LUBRICATIONSYSTEM and OIL PUMP

Lubrication is forced lubrication and wholly fdtered system by trochoid type oil pump. The oil pump, and thegovernor are assembled in one piece, whichis fitted to thecrankcase.

Revolution of the crankshaft is reduced by the reductiongear (1 : 1.4) of the pump; and from themain gallery oil is forcibly lubricated to the crank journal. Thatoil wil further be supplied to the crankpin,large end of the connecting rod, and then splashed to the piston, small end of the connecting,rod, cylinder, etc.Also from the main gallery oil is forcibly supplied to the cam shaft bearingand is sent t o cam lobe of intake and exhaust valves and lubricate the tappets. In the camshaft oil relief valve is assembled, and it adjusts the oil pressure at 3 kg/cm2. Lubrication in the rocker chamber is conducted by the splash of oil pushed u p by blow-by gas, which lubricates rocker arm, etc.

Furthermore, blow-bygas containing oilwill pass through the breather, intake port and the cylinder, whereit is finally burnt.

LUBRICATIONCHART

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Ir

I

 

BREATHER 1-1INTAK:PORT1

 

 

I

 

*

t

 

COMBUSTION

 

I

 

 

 

t

1

CYLINDER

k’

I

$=I”!

 

 

PISTON,BEARING

 

 

 

S M A L L E N D

 

 

O I L F I L T E R

 

 

Fig. 68

7 - 5 . OIL FILTER

Oil filter is madeofdouble sheets ofwire netting, and it is less flow resistance type, and is called full-flow type. As the element is made of wire, it canbe washed and used for many times.

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Subaru Robin Power Products DY30, DY35, DY41 manual $=I, OIL Filter

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.