Description

Mazda 626, RX-7 1981 Training Manual

If you’ve ever flipped through an aftermarket manual trying to find the correct emission vacuum routing for a first-generation RX-7, you know the pain. They give you a generic drawing and say “refer to vehicle.” That’s useless. This Mazda 626, RX-7 1981 Training Manual is the real thing – an original 76-page OEM dealer training booklet from Toyo Kogyo Co., LTD., printed in 1980 for the 1981 model year. It covers both the 626 and RX-7, but note the scanned copy in our inventory focuses on the RX-7 sections. Page numbers jump around because the tech at the time only scanned what mattered to him – the rotary stuff. You’re not missing anything; you’re getting the factory training material that dealership mechanics used.

Here’s what that means on your workbench. You get the exact specifications Mazda used for PDI (Pre-Delivery Inspection), scheduled maintenance, and emission control systems. No interpretation. No “typical values.” Factory numbers. I’ve torqued enough Wankel housings to tell you: the difference between 23 ft-lb and 27 ft-lb on a side housing bolt is a leak or a stripped thread. This manual gives you the correct torque – but you’ll have to find it in the Index, because torque tables aren’t listed separately. The Index on page 4 (hotlinked in the PDF) will take you to the right section.

Engine Tune-Up Procedure – What the 1981 Manual Covers

The Engine Tune-up Procedure chapter walks through spark plug gaps, idle speed, ignition timing, and carburetor adjustments for both the 626’s piston engine and the RX-7’s 12A rotary. For the RX-7, it details the two-stage spark plug system and the proper procedure to set the trailing and leading timing marks. If you’re trying to get a first-gen rotary to idle smoothly after a rebuild, this section is where you start. The manual doesn’t give a page number for the engine tune-up in the TOC excerpt, but it’s listed under “General” and “RX-7” sections. Expect to find it around the middle of the document.

Does This Manual Cover the RX-7 Rotary?

Yes. The RX-7 section (starting after the 626 chapters) includes the Limited Slip Differential, Manual Transmission, Front Suspension, Rear Disc Brakes, Control Processing Unit, Power Antenna, and Rear Window Wiper/Washer. The emission control system gets its own dedicated chapter – RX-7 Emission Control System – with component locations, vacuum hose routing diagrams, and an emission checking procedure. That vacuum routing diagram is worth the price of the manual alone if you’ve ever stared at a rat’s nest of hoses under the hood of an ’81 RX-7. The diagram is factory-correct for that year, not a generic aftermarket approximation. For more modern RX-7 wiring, check the Mazda RX-7 1994 Wiring Diagram.

Emission Control System: Vacuum Hose Routing and Component Location

The Emission Control System chapter for the RX-7 goes through each component – the air pump, the check valve, the thermal reactor, and all the associated solenoids. The Vacuum Hose Routing Diagram is a full-page schematic showing every connection. The Emission Checking Procedure tells you exactly how to test the system with a vacuum gauge and dwell meter. If you’re failing a smog test in San Antonio, you need this manual. It also covers the 626 emission system, but the RX-7 stuff is the highlight – rotary engines have unique emission components that most aftermarket manuals get wrong.

One note: this is a training manual, not a full service manual. It doesn’t include every bolt torque for the entire car. But it does include the critical specs for the systems it covers – things like the Control Processing Unit (CPU) diagnostics for the RX-7, which is a precursor to the ECU. If you need a complete workshop manual for the 626, I recommend the Mazda 626 1999 Workshop Manual for later models or the Mazda 626 1992-2002 Repair Manual for a broader range. For the RX-7 rotary, this training manual is one of the few OEM sources for 1981-specific emission and component info.

3 Reasons OEM Documentation Beats Aftermarket

First, the torque specs are from Mazda’s engineers, not a cross-reference database that guesses. Second, the wiring diagrams and vacuum routes are model-year specific – the 1981 RX-7 has different emission controls than the 1980. Third, the PDI procedure outlines exactly what Mazda expected dealerships to check before delivery: fluid levels, belt tensions, fastener torques. An aftermarket manual will tell you to “check all fluid levels.” This manual lists the specific level, the dipstick markings, and the acceptable range. That’s the difference between a professional job and a hack job. For an overview of the automotive industry’s approach to documentation, see Automotive Industry Overview.

Get the Right Torque Data – Where to Look in the Manual

Page numbers in the PDF are not continuous because the original scan skipped empty pages. But the Index page is clickable and takes you to each section. For torque values on the RX-7, check the Engine Tune-up Procedure and the Emission System component installation sections. You’ll find specified tightening torques for things like the oil pan bolts, intake manifold, and thermal reactor mounting. If you need a broader perspective on factory documentation standards across manufacturers, refer to Automotive Industry Overview.

Frequently Asked Questions

Will this manual help me rebuild a 12A rotary engine?

No. It covers tune-up and emission systems, not engine overhaul. Look for the factory service manual for that.

Does the manual include wiring diagrams?

It includes vacuum hose routing and component location diagrams, but not full electrical wiring schematics. The Control Processing Unit section has some connector pin information.

What is the difference between this training manual and the factory service manual?

A training manual highlights new features and systems for the model year – like the limited slip differential, power sliding sunroof, and magnetic door lock on the 626, and the rear disc brakes and CPU on the RX-7. A service manual has complete disassembly and torque specs for every part. This manual is a supplement for dealership mechanics learning the 1981 updates. It’s 76 pages of concentrated info on those specific systems, not a 1,000-page tome. If you want the full torque spec for every bolt, you need both this and the factory service manual. But for emission diagnostics and PDI, this is your best source.

Can I use this manual for a 1980 Mazda RX-7?

Many components are similar, but the 1981 model had changes in the emission system and the Control Processing Unit. Use with caution – cross-reference with a 1980 manual if possible.

You’ve seen enough aftermarket garbage that skips steps and leaves you guessing. This manual is the real deal – original OEM print, scanned from a dealer training booklet. If you own a first-generation RX-7 or a 1981 626 and you’re serious about getting the factory procedure right, access the factory manual. It’s a direct PDF of the 76-page booklet, with hotlinked Index and bookmarks. Get it here at AutoRepairManuals.