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Optional Manual Transmission
The change speed arrangement being conventional, it is not proposed to describe the method of
engaging and changing gear, but a plan showing the gear lever positions is shown above.
Clutch
The clutch is hydraulically operated and normally requires no adjustment. If attention is required the
work should be carried out by an officially appointed Jensen Distributor or Dealer.
Engine Lubrication System
The engine lubrication system comprises an externally mounted rotor-type pump, a full flow oil filter
connected to the pump by flexible pipes, engine sump, and various lubrication passages.
Oil is drawn from the sump through a fine mesh gauze strainer, and delivered to the bearings, via the oil
filter, under pressure from the pump. Uniform pressure is maintained by a relief valve in the pump.
The valve gear is lubricated by oilways through the cam-shaft, while the gudgeon-pins are splash
lubricated.
The oil level should be checked daily by means of the dipstick, which is on the left hand side of the
engine. Oil should be added via the filler cap on the left hand bank of cylinders.
Draining the Sump
The engine oil should be changed every 4,000 miles (or 3 months) (Every 2,000 miles if a great deal
of driving is done in heavy traffic or in very cold conditions).
The oil should be drained when the engine is warm. The drain plug is in the bottom of the sump.
Changing the Filter
The engine oil filter element should be changed with the engine oil with every
second
change. The
filter is mounted high up on the left hand side of the engine, and is connected to the pump by two
flexible pipes.
The element is changed by undoing the hexagonal nut on top of the filter housing. This will allow the
top of the housing to be removed, and the filter element withdrawn.
Before the new element is inserted, the housing, especially the top rim, should be wiped clean. A
new gasket should be used every time the element is changed.
After the fitting of a new filter element, the car should be run for a few miles and then the top joint of
the filter inspected for leaks. If necessary the hexagonal nut should be retightened.
