Lubrication System - Suzuki F6A Service Manual

With 660 suzuki efi engine model 898487

Table of Contents

The engine lubrication uses a wet sump system, which is full–flow filtration force–feed system that force–feeds the oil

using a pump that is driven by the driveshaft. The oil is drawn up from the oil pump strainer, and passes through the

oil filter before flowing into the main channel.

The oil flowing out of the main channel lubricates each crank journal, passes through the oil passage inside the

crankshaft, flows into the connecting rod bearings, and is sprayed from the oil jets which are at the larger end of the

connecting rods, lubricating the pistons, piston pins, and cylinder walls.

Also, a passage leads from crank journal No. 2 to the oil pressure switch and cylinder head.

In the 4–valve models, the oil flowing into the cylinder head passes through the oil venturi plug and flows into the oil

gallery of the cylinder head. From the oil gallery of the cylinder head the oil flows into each camshaft journal and each

exhaust rocker arm and pivot part. From the oil gallery of the cylinder head, also, oil flows to the rocker arm shaft housing

No. 5, passing inside the rocker arm shaft and along the outer periphery of the sparkplug hole pipe, and lubricates the

cam nose from the oil jet of the rocker arm.

CAMSHAFT JOURNAL

OIL GALLERY

OIL VENTURI PLUG

CYLINDER HEAD

BYPASS ROUTE

MAIN ROUTE