Technical data

LUBRICATION SYSTEM
The lubrication system is a full-force type using a trochoid gear pump fitted with a full-flow oil
filter. The oil pump is driven through the Oldham's coupling at the rear end of the fuel injection pump
camshaft. The oil from the oil pump flows into the cartridge type oil filter via the relief valve. After being
filtered in this filter, the oil passes through the oil gallery hole in the cylinder block, being delivered to
each part of the engine.
(1) Oil filter
(2) Check valve
(3) Oil pump
(4) Oil level gauge
(5) Oil screen
(6) Oil pressure switch
(7) Oil filler cap
(8) Rocker arm
(9) Rocker shaft
(10) Camshaft
(11) Crankshaft
(12) Oil pan
Lubricating System
(1) Oil Filter
The oil filter is of the spin-on cartridge type that the filter body is integral with the filter element
to insure easy handling.
The oil from the oil pump is fed into the filter element. When a pressure difference between
before and after the element exceeds 1 kg/cm2 due to excessive clogging of the element, the check valve
in the element will open to allow the passage of the oil through the valve to each part of the engine. In
this case, as the oil is not filtered, it is important to change the oil regularly. This oil filter does not
require cleaning of the interior, but must be replaced after the first 50 hours of operation and thereafter
every 100 hours of operation.
(2). Oil Pump
The oil pump is a trochoid gear type and is mounted at the rear of the fuel injection pump on the
right-hand side of the cylinder block. The oil pump houses a relief valve, which, when the delivery,
pressure exceeds 6 kg/cm2, will open to let the oil flow into the oil pan, thus preventing oil pressure rise.