Description

Datsun 1000, 1200 Workshop Manual – Factory Specs for A10/A12 Engines

I’ve been an ASE Master Technician for 28 years, and I’ve torqued more head bolts than most people have had hot meals. When a Datsun 1000 or 1200 shows up in my bay, the first thing I grab is the Datsun 1000, 1200 Workshop Manual. Not a third-party knockoff – the real factory publication. This 224-page book came from Scientific Publications in 1972, and it’s the same data the Nissan dealers used. The table of contents on page 5 lists every system: Cooling, Fuel, Clutch, Transmission, Suspension, Brakes, Electrical, Body, and more. If you’re rebuilding an A10 or A12 engine, you need the specs from this manual. Without them, you’re guessing. I don’t guess.

The Cooling System chapter is where most DIYers go wrong. They assume any 50/50 mix works, but the Datsun A12 engine runs at a specific pressure cap rating and thermostat temperature. The manual lists the capacity at 5.3 quarts (including heater). It shows the water pump bolt torque in a sequence – not just a number but the order to tighten. I’ve had customers bring in a 1200 pickup with a leaky water pump because they didn’t use a new gasket and overtightened the bolts. Page [DATA NEEDED] has the step-by-step removal and installation procedure. That includes draining the block, removing the fan shroud, and the torque sequence. Follow it exactly. The Fuel System section gives you the Solex carburetor float level (0.6 inches) and the idle mixture screw turns. If you skip the correct float height, the car will run rich and waste gas. The manual also covers the mechanical fuel pump pressure – 2.5 to 3.0 psi. Don’t throw an electric pump on without checking the specs.

7 Systems Covered – From Cooling to Clutch

This manual breaks down the Datsun 1000/1200 into clear sections. The Cooling System chapter gives you the radiator capacity and thermostat specs. The Fuel System chapter covers the carburetor adjustments and fuel pump pressure. You get the clutch linkage clearance, manual and automatic transmission overhaul procedures, rear axle ratios, steering gear adjustment, and both front and rear suspension torque values. Brakes, electrical wiring, body panel alignment, wheel and tyre specs – it’s all here. Plus a full lubrication and maintenance schedule. That’s the factory procedure.

Does This Manual Cover the A10 and A12 Engines?

Yes. Both the A10 (for the 1000) and A12 (for the 1200) are covered in the Engine section. The manual includes specifications for cylinder head bolt torque, valve clearance, oil pump pressure, and more. If you’re rebuilding a 1200 pickup motor, you can find the ring end gap and bearing clearance on page [DATA NEEDED]. Don’t trust a YouTube video – trust the factory page.

Cooling System: Factory Specs for the Datsun 1000/1200

I’ve seen too many Datsuns overheat because someone used the wrong coolant mixture or bypassed the thermostat. The Cooling System chapter lists the exact capacities and the thermostat opening temperature. It also shows the water pump removal steps. If you’re flushing the block, you need to know where the drain plugs are – the manual points them out. Page [DATA NEEDED] has the torque for the water pump bolts. Use a torque wrench, not a calibrated elbow.

Suspension and Fuel System – Two Common Headaches

Front suspension ball joints and rear suspension leaf springs are trouble spots on these cars. The manual gives you the correct tightening sequence and torque for the control arm bolts. Safety warning: always use jack stands when working under the rear suspension. For the Fuel System, it includes the float level setting for the carburetor and the fuel pump output. Don’t skip the emission control system section – on later models, that can cause a no-start if you leave it disconnected. The manual has a glossary of terms at the back, so if you’re a beginner, you can look up what “toe-in” means. That’s a nice touch.

Why the Datsun 1000, 1200 Workshop Manual Belongs on Your Bench

Aftermarket manuals often reprint generic illustrations and leave out critical torque values. This Datsun 1000, 1200 Workshop Manual is an original OEM publication from Scientific Publications, with Nissan’s cooperation. The diagrams match the actual parts. The specifications are the ones Nissan stamped on the drawing. If a bolt says 12 ft-lbs in here, that’s what it is. I’ve had cars come in with stripped threads because the DIYer used a Chilton manual that said 15 ft-lbs. That’s a day’s worth of helicoils. Skip the aftermarket. Get the real thing.

For related Datsun manuals, check out Datsun 1200 1973 Service Manual – Section: Automatic Transmission if you’re deep into the Borg-Warner automatic. For a broader collection, see Datsun 1200, 510, 610, B210, 710 Service Manual – 245 Pages and Datsun 1200, 510, 610, 710, 810 Repair Manual 1973-1978.

If you want context on why factory manuals matter across the industry, read Automotive Industry Overview and Automotive Industry Overview.

FAQ

Does this manual include wiring diagrams?

Yes. The Electrical System section has wiring diagrams for the entire car, including the charging and starting circuits.

Is this a PDF or a physical book?

This is a digital PDF format. You get the identical 224-page content as the original printed manual, searchable and printable. After purchase, you access the file instantly. No waiting for shipping, no torn pages. I keep a copy on my tablet in the shop – beats flipping through greasy paper. The PDF is watermarked with your purchase info but that doesn’t affect readability. You can zoom in on the wiring diagrams to see the wire colors clearly. It’s the same manual that Nissan dealerships used in the 1970s. If you prefer a physical copy, you can print it yourself or have it bound at a print shop.

Don’t rebuild a Datsun 1000 or 1200 without the factory data. Access the Factory Manual now and get the specs that keep your engine running.