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Left-hand-drive (LHD) versions of the Datsun 1200 used a hydraulic clutch system. It is very nice, with a light, linear action.

Extremely light clutch pedal effort, but with good feedback.

1 Parts
2 Adjustment
3 Clutch Slave Cylinder
- 3.1 Pedal Linkage
4 Removable, Replacement and Bleeding

Parts

Stock USA cylinders. "Repair Kits" are also available. These include all new rubber parts, and can be used in the aluminum body is not pitted. The bore is hand-honed. Often with aluminum a kit will leak. Cast-iron cylinders may have better success.

MASTER

30610-24900 (superceded by 30610-24910). $111 USD

SLAVE

Left: 30620-H1601 (superceded by 30620-H1600) $59 USD
Right: 30620-H1600

HYDRAULIC HOSE
The hose is difficult to find in USA, except on eBay. Alternatives: lot of the brake hoses from cars with a solid rear axel will work also:

Beck/Arnley 073-0879 (rear brake hose)
BRAKEWARE #77001 $12 at Autozone. It's about 1.5-2 inches longer then the original, does not hang to low and bolts right up

Adjustment

This is for the 71-73 1200. The B210 (120Y) measurements are different.

Clutch Slave Cylinder

Adjust the free play to 5/32".

Pedal Linkage

Before adjusting the pedal linkage, first adjust the clutch release arm under the car.

The specs are:

Pedal height: 5.57 in (141.5 mm)
Pedal free play: 1.181 in (30 mm)
Pedal stroke is 5.65 in (143.5 mm) with the adjustment stop (the switch in the diagram) backed off. Adjustment is made with shims for the cylinder on the firewall.

Adusting Shim

30611-27260 1.6 mm
30612-27260 0.8 mm
30613-27260 0.5 mm

Removable, Replacement and Bleeding

If the Master Cylinder runs dry, or when replacing it, be sure to bleed the Master Cylinder separately.

Remove the pipe & place a thumb over it for the return stroke of the pedal to prevent ingestion of air. Once the Master Cylinder is free of air you can bleed the whole system with confidence.