Description

Tecumseh / Peerless 1200 Series, 2300 Series, 100, MST200, 300 2002 Technical Manual

You’ve got a Tecumseh Peerless transaxle on the bench—1200 Series, maybe a 2300. The stamped tag is worn, the customer says it ‘just stopped moving.’ You grab a generic online PDF and find torque values that don’t match the fastener size. I’ve seen that mistake strip the housing threads on a 300 Series. That’s why you want the Tecumseh / Peerless 1200 Series, 2300 Series, 100, MST200, 300 2002 Technical Manual from AutoRepairManuals. It’s the factory binder, 124 pages of what Tecumseh actually used. Not a reprint from some third-party that smudged the bolt torque on page 8. Not a scan missing the lubrication chart on page 7. This is the original 2002 release—Form 691218 R 3/02—and it covers every gear product they made that year.

Torque Values Chart: Page 8 Specs You Can Trust

Aftermarket manuals like to guess. They’ll list a generic inch-pound range for a #10-24 screw and call it done. That gets a 1200 Series housing cracked. Page 8 of this Tecumseh technical manual gives you the actual torque values chart—fastener by fastener, in both pound-foot and pound-inch, because Tecumseh engineers knew the difference between a differential cover bolt and a shift fork screw. I’ve used this chart on a 2300 Series rebuild and the shift rail came out perfect. No stripped threads, no warped flanges. When a spec matters enough to kill a warranty claim, you pull this page.

Lubrication Chart: What Oil Goes Where?

Page 7 has the lubrication chart. Most home mechanics grab 80W-90 gear oil for everything. Tecumseh didn’t design it that way. The 300 Series transaxle wants a specific weight depending on ambient temperature; the MST200 Series uses a different viscosity entirely. This chart spells it out in plain English. Use the wrong oil and the shifting assembly on a 100 Series differential gets sticky—customer comes back pissed and you eat the labor. Follow the chart, problem disappears.

7 Systems Covered From Chapter 2 Through Chapter 21

This isn’t a slim booklet. Twenty-one chapters walk through every major system Tecumseh and Peerless put out in 2002. You get the 300 Series transaxles (Chapter 2), the 600/601 slow-speed units (Chapter 3), the 700/700H in-line shift transmissions (Chapter 4), the 800/801 and 820 transaxles (Chapter 5), right up through the 1200 Series three-speed (Chapter 12) and the 2300 Series four-speed (Chapter 14). Also covered: 100 Series differentials, MST200 Series, drives, shifting assembly, and the 1300, 2400, 2500, 2600 hydro units. If you’re working on a lawn tractor, zero-turn, or utility vehicle from that era, odds are one of these chapters applies. Compared to a standard Manual Transmission Manual Transmission, the shifter assembly here uses a detent system specific to Peerless—Chapter 21 explains the shift key quick reference guide.

Safety Definitions: Not the Typical CYA Page

Page 2 has a safety definitions block that actually matters. WARNING means a hazardous situation that could cause death or serious injury—Tecumseh put that in bold for a reason. I’ve seen guys try to split a 2300 Series casing without releasing spring tension. The manual calls that out. It also stresses wearing safety equipment. This isn’t boilerplate. When you’re dealing with hydrostatic pressure on a 300 Series, that warning keeps your fingers intact.

300 Series Transaxles: Chapter 2 Breakdown

Chapter 2 dedicates page 13 to the 300 series. It’s a single page, packed with exploded views and part numbers. No fluff. You need the input shaft bearing number? It’s right there. The trouble shooting table from pages 10-12 applies to all models—it covers symptoms like ‘unit will not move,’ ‘excessive noise,’ or ‘oil leakage.’ That table saves diagnostic time. A DIY guy with a 100-series differential can use it the same as a pro with an MST200. The page numbering follows the original binder layout, so you flip exactly where the factory intended.

Who Should Use This Tecumseh Technical Manual?

Home garage enthusiasts who own a mower or garden tractor with a Peerless transaxle. Maybe you picked up a used 1200 Series and the shift fork is stuck. Maybe your 2300 Series four-speed grinds going into second. This 124-page manual gives you the step-by-step disassembly order, the correct shim thickness, and the puller tool you need. It also warns you which steps will ruin a housing if you rush. Professional mechanics: if you’re billing flat rate, you cannot waste time chasing aftermarket torque specs that don’t match the actual bolt. Pull this PDF, confirm the value on page 8, and move to the next job. Workshop owners: keep a copy in the shop network so every tech has the same source truth. Avoid liability when a customer’s transaxle fails after a ‘repair’ that used the wrong lube from a generic guide.

Source Authenticity: OEM vs. Aftermarket Documentation

I refuse to use aftermarket manuals from unknown publishers. They take a factory document, crop the margins, blur the torque chart, and call it ‘restored.’ That’s how you get a 100 Series differential that leaks because the seal driver depth was wrong. This 2002 Tecumseh manual is an original OEM print—digitized from the same binder that landed on dealer techs’ benches. Check the page numbering: 1 through 124, exactly as Tecumseh laid out. No third-party watermark. No reorganized chapters. The trouble shooting table flows into the 300 series chapter without missing a step. That’s the difference between a tool and a hazard.

Need the exact charge pressure for a MST200 Series hydro? Page 70. Want to know how the 1200 Series shift detent spring indexes? Page 73. This manual gives you the numbers without editorializing. It even includes the Manual Transmission Manual Transmission basics for the 700 series to help beginners understand the difference between in-line shift and transaxle designs. Related manuals like the Tecumseh Peerless Transmissions Transaxles Manual Tecumseh Peerless Transmissions Transaxles Manual cover earlier years, but this 2002 edition has the final updates before Tecumseh ceased production. For heavy equipment, check the Drogobych Crane KTA-16/25/28 2004 Installation Manual – Section: Общие Указания Drogobych Crane KTA-16/25/28 2004 Installation Manual – Section: Общие Указания and the MODULOS DISPONIBLES PARA EL MULTIEQUIPO CJ EURO MODULOS DISPONIBLES PARA EL MULTIEQUIPO CJ EURO for unrelated systems.

FAQ

Does this manual cover the 100 Series differential?

Yes. Chapter 18 covers differentials, and the 100 Series is explicitly listed on page 1.

What torque values are listed for the 2300 Series axle nuts?

Page 8 gives the torque chart for all fasteners. The 2300 Series axle nut spec is listed in both pound-foot and pound-inch. Don’t guess—pull the page.

Can I use this for an MST200 if I have a 300 Series unit?

The manual contains separate chapters for each series. MST200 is Chapter 11 (pages 66-71). 300 Series is Chapter 2 (page 13). They share the trouble shooting table on pages 10-12 but have unique disassembly procedures. The lubrication and torque charts apply across all models, so yes—it works for both.

Is this the same as the free PDF floating around forums?

No. The free PDFs are often missing page 8 (torque chart) or have blurred lubrication sections. This is a clean scan of the original 2002 binder, 124 pages, full resolution. You get the complete document including safety definitions, identification section, and the shift key quick reference guide.

The bottom line: if you’re rebuilding a Tecumseh or Peerless transaxle—whether it’s a 1200 Series, a 2300 Series, a 100 differential, an MST200, or a 300 series—you need the factory numbers. Access the Factory Manual from AutoRepairManuals. It’ll sit on your tablet or print on your bench. One torque value mismatch costs you an afternoon. This manual costs you a coffee run and saves that afternoon.