Description

Clark-hurth SF20, SF25, SF30, CMP20, CMP25 2004 Service Manual

If you’re pulling a Clark-hurth SF20 or CMP25 apart and the bolts don’t match any spec you’ve seen, you’re not alone. Aftermarket manuals and forum write-ups will leave you chasing ghosts, wasting hours on wrong torque values or skipping a critical safety step. This 2004 Service Manual from Clark-hurth is the only document that gives you the factory torque values, the actual fuel system diagrams, and the disassembly sequences that keep your forklift or industrial vehicle running straight. It’s 591 pages of OEM engineering data, not a condensed reprint.

For other CLARK models, see CLARK CMP15 CMP20 Service Manual – Section: Copyrighted Material. We also carry CLARK SF20-30 CMP20-30 2004 Service Manual for backup. If you need heavy-duty transmission specs, check out Spicer Clark-hurth HR Service Manual – Factory Specs for Heavy-Duty Transmission.

What’s Inside the 591 Pages?

The manual is structured around real repair sequences. Section 00 covers general safety and standard tightening torque — page 00-04-10 gives you the baseline bolt torques for non‑critical fasteners. Section 01 has coolant, fuel, and lubrication charts, plus periodic maintenance schedules. Then it splits into engine sections: section 10 for gasoline/LPG engines (including emission-compliant LPG systems) and sections 15 and 16 for diesel engines (4TNE94 and Tier 2 4TNV88/94L). Each engine chapter includes specification tables, adjustment procedures, and troubleshooting by symptom or component.

Fuel System Coverage: Gasoline, LPG, and Diesel

Fuel system work is where most aftermarket manuals fail. This manual devotes section 10-06 to gasoline and LPG fuel systems, including removal, installation, carburetor specs, and air governor adjustment. For emission-compliant LPG engines there’s a separate subsection (10-06-01) with wiring diagrams, governor/vacuum advance inspection, and IDC adjustment procedure. Section 10-09 covers the Tier 2 MI-4 LP system across nine chapters — from LPG fuel tanks to the N2001 pressure regulator. Diesel fuel systems are covered in sections 15-01 and 16-07, with fuel injection pump governor details. Every fuel component has a factory torque spec right in the chapter.

3 Critical Maintenance Sections

Section 01-04 gives the periodic maintenance chart — oil changes, filter replacements, and inspection intervals. Section 20 covers the transaxle, including hydraulic circuit, service brake adjustment, and full disassembly/reassembly of the differential and clutch assembly. Section 40 explains the brake and inching system. These aren’t generic guidelines; they’re the steps Clark-hurth requires for warranty compliance and safe operation.

Understanding the fundamentals of a Manual Transmission helps when working on the transaxle. The transaxle chapter also assumes you know how a Manual Transmission works.

Torque Specs: Why Factory Data Matters

Torque tables appear in almost every section. Section 00-04 has standard tightening torque for common bolts. Section 10-02 lists engine-specific torque for cylinder head, rocker arms, and front case. Section 15-03 includes torque specs for the 4TNE94 diesel. Section 16-11 is the tightening torque chart for bolts and nuts on the Tier 2 diesel. Transaxle reassembly in section 20-03 requires pinion gear shimming and exact stator support torque. Using aftermarket torque values on a Clark-hurth unit can strip threads or cause fluid leaks — a headache you don’t need.

Source Validity: OEM vs. Aftermarket

This is a genuine Clark-hurth factory service manual, part number 8034924, manual number SM688 Rev.2. The PDF is scanned from the original dealer document — copyright notices appear on every page. No third-party editing, no condensed summaries. Every diagram, every torque callout, every troubleshooting tree comes straight from the manufacturer. Aftermarket manuals often skip safety warnings or mislabel wiring colors. This one doesn’t.

That’s the difference between a repair that holds up and a repair that comes back.

FAQ

Does this manual cover all SF20, SF25, SF30, CMP20, CMP25 models?

Yes, it covers all five models from 2004. Rated capacity 2000–3000 kg. The manual includes gasoline, LPG, and diesel engine variants.

What torque values are listed?

The manual includes several torque tables: standard tightening torque in section 00-04, engine-specific torque for gasoline/LPG in section 10-02, diesel engine torque in sections 15-03 and 16-11, and transaxle torque in section 20-02. Each table specifies bolt grade, thread size, and tightening sequence. Always use the exact values from your model’s section because aftermarket sources often mix up imperial and metric conversions.

Is this a reprinted or original document?

It is a digital scan of the original dealer-only manual. No reprinting or editing. The PDF is identical to the paper document.

Can I use this for Tier 2 engines?

Yes. Section 16 covers the diesel Tier 2 (4TNV88/94L) engine, and section 10-09 covers the Tier 2 LPG MI-4 system. Both include specific wiring diagrams and diagnostics.

Stop guessing with generic guides. Access the Factory Manual and get the only documentation Clark-hurth intended for their dealers.