Description

Daewoo GC15S-2, GC18S-2, GC20SC-2 2000 Service Manual – Factory OEM

You are in the middle of a head gasket job on a Daewoo GC15S-2 and you need the torque sequence for the cylinder head bolts. You pull up a PDF from some third-party site—it’s blurry, missing half the values, and the specs are for a different engine family. That’s a blown head gasket and a tow bill waiting to happen. This is why you buy the Daewoo GC15S-2, GC18S-2, GC20SC-2 2000 Service Manual from AutoRepairManuals. 435 pages, published May 2000, and it’s the same document the dealer techs use. No reprints, no scanned copies of a copy. Original OEM file. I’ve been turning wrenches since before most of you were born, and I can tell you: the difference between a factory manual and a aftermarket knockoff is the difference between a job done once and a job done twice.

Tightening Torque – Why You Need the Factory Number

The manual has a dedicated Torque Specifications section starting on page 2. That’s not a generic chart—that’s the exact values Daewoo used on the assembly line. Crankshaft main bearing cap bolts, connecting rod nuts, cylinder head bolts, everything. I’ve seen guys use a ‘close enough’ value from a forum and then wonder why their oil pan leaks. The factory spec is on page 2. Use it. Otherwise you’re gambling with your engine.

Crankshaft and Cylinder Block: Removal and Installation Procedure

Needing to pull the crankshaft? The Removal and Installation chapter covers Crankshaft And Cylinder Block with the exact step order. It tells you the order to loosen main bearing caps, how to check bearing clearance, and the correct sealant for the front case and oil pan. This isn’t a YouTube video that skips the boring parts—it’s the full factory procedure. Also covers Cylinder Head And Valves, piston and connecting rod assembly. Each step is written for a mechanic who expects to get it right the first time.

Fuel System and Carburetor – Factory Diagnostics

The Fuel System section in System Operation explains how the G420 LP/Gasoline engine manages fuel delivery. Then the Removal and Installation chapter has a dedicated Fuel System section for taking apart the carburetor and air governor. If you are chasing a rough idle or a fuel smell, you need the OEM schematic and the adjustment specs. Aftermarket carburetors often come with their own settings, but if you are rebuilding the original, this manual gives you the float level and idle mixture adjustments. Also covers the intake manifold and exhaust manifold and water pump.

Does This Manual Cover Alternator Diagnostic Procedures?

Yes. The manual includes SB2007E01 which covers the Delco Remy CS-121 Series Alternator. That section has an Alternator Output Test and Machine Test under Testing And Adjusting. If your charging system is acting up, you do not replace parts—you follow the troubleshooting problem list. The wiring diagram is included. I have seen guys buy three alternators before they realize it was a bad ground. One look at the factory schematic saves you that headache.

Source Authenticity: OEM Service Manual vs Aftermarket Reprints

This is the original OEM file from Daewoo. Form number SB4007E01, dated May 2000. The PDF is 435 pages of direct dealer-level data. Aftermarket manuals often reprint the same information but with errors—torque values in the wrong unit, missing pages, or schematics that are too dark to read. AutoRepairManuals is the largest collection of OEM shop manuals in North America. That means you get the real thing, not a copy of a copy. For related equipment, check out the Daewoo Musso Service Manual – Factory OEM Specs for 1465-Page Workbench and the Daewoo 661LA, 662NA, 662LA 2000 Service Manual – Factory OEM. For larger excavator work, the Daewoo 470LC-V 2001 Service Manual – Factory Specs for Excavator Maintenance covers similar depth.

Who Needs This Manual?

If you own a Daewoo GC15S-2, GC18S-2, or GC20SC-2—whether it is a forklift, a utility vehicle, or a stand-alone machine—you need this. Home garage enthusiasts who want to do their own maintenance should have the torque specs and the system operation explanations. Professional mechanics need it for billing accuracy: you cannot charge a customer for a job if you guess the procedure. The manual includes Special Tools lists, so you know what you need before you start. And if you are teaching a junior tech, this is the textbook. Also covers the internal combustion engine fundamentals; for more on that, see Internal Combustion Engine. For transmission specifics, the Power Train section includes transmission hydraulic system and power flows—reference Manual Transmission for basic theory, but this manual gives you the actual adjustment procedures.

Frequently Asked Questions

What is the publication year and page count of this manual?

Published May 2000, 435 pages.

Does this manual include torque specifications?

Yes. The Torque Specifications section appears on page 2 and covers engine, transmission, and chassis fastener torque values. It also lists tightening torque in the General Information section for sealants and bolt grades.

Is this a reprint or an original OEM document?

It is the original OEM digital file from Daewoo, form SB4007E01. Not a reprint. Not a third-party scan. Direct factory source.

What systems are covered in the Engine section of the manual?

The Engine section (SB4008E01) covers removal and installation of the carburetor, crankshaft and cylinder block, cylinder head and valves, distributor, exhaust manifold and water pump, front case and oil pan, fuel system, ignition system, intake manifold, piston and connecting rod, rocker arms and camshaft, starter motor, and timing belt. It also includes system operation for the engine, lubrication, fuel, cooling, intake and exhaust, and electrical systems. Troubleshooting and adjustment procedures are included.

Stop wasting time with aftermarket data that might be wrong. This manual has been on the workbench of dealer techs since 2000. If you need to rebuild the engine, fix the transmission, or troubleshoot the hydraulic system, this is the book that gives you the original specs. Access the Factory Manual now and get the job done right.