Description

Kubota F2690E, F2690, F3990, RCK60P-F39, RCK60R-F36 2013 Workshop Manual

If you’re turning wrenches on a Kubota front mower and reaching for a generic manual, you’re asking for a come-apart. I’ve torqued more head bolts than most techs have had hot meals, and I’ll tell you flat – aftermarket documentation gets specs wrong. This is the actual Kubota F2690E, F2690, F3990, RCK60P-F39, RCK60R-F36 2013 Workshop Manual, 413 pages of factory print, not a reprint or a scan. It covers the F2690E, F2690, F3990 tractors and the matched RCK60P-F39, RCK60R-F36, plus the RCK72P-F39 and RCK72R-F36 mower decks. You get the same book Kubota dealer techs used when these machines were new.

Engine Overhaul: Cylinder Head Torque and Valve Adjustment

The engine section alone is worth the access. It covers the D1105 and V1505 power plants, including the electronic governor on the V1505. You get the exact tightening torques for cylinder head bolts – no guesswork. The manual shows the half-floating head cover design and the closed breather system. Need to separate the engine from the frame? The disassembly procedure for the F2690E and F2690 differs from the F3990, and this manual spells it out step by step. Check page I-11 for the full machine specifications including engine power and dimensions. Everything is in Imperial units – ft-lbs, inches, pounds – so your Snap-on torque wrench reads the numbers right.

Does This Manual Cover the F3990 Constant RPM Management?

Yes. The F3990 has a constant RPM management control system that ties into the electronic governor and DPF regeneration. That’s a headache if you don’t have the factory logic. The manual explains the reformer, after-treatment devices, and the PM warning levels. You’ll also find the wiring color codes and handling precautions for electrical parts – connectors, fuses, battery. I’ve seen guys fry an ECU because they back-probed a connector wrong. This manual tells you exactly how to use a circuit tester without damaging pins.

413 Pages of Factory Data – What You Get

The manual is split into four parts: Information, General, Mechanism, and Servicing. Under General you get the tightening torques for metric and American standard bolts (UNC/UNF threads), plus plugs. There’s a full maintenance check list from daily checks up to 3000-hour intervals. The mechanism section walks through the hydrostatic transmission (HST) oil flow, charge relief valve, and the dual-acting overrunning four-wheel drive on the F2690 and F3990. The PTO section and differential gear section are also covered. If you need to service the RCK mower decks, the manual includes safety decals, terminology, and blade spec.

Get the Right Torque Specs for Metric and American Fasteners

Torque values are not optional. The manual gives separate tables for general use screws, metric screws, and American standard screws. I keep a copy of this page flagged on my workbench. When you’re reassembling a cylinder head or a connecting rod, you don’t get a second chance. The engine servicing section has its own tightening torques for the crankshaft bearing caps and oil pump. Don’t trust a random internet post – use the factory numbers.

HST Transmission: Charge Relief Valve Specs

The transmission section covers the hydrostatic drive system in detail: structure, oil flow, operation, and the charge relief valve. If you’re chasing a weak drive or overheating, the troubleshooting steps in the Servicing part will save you tearing down parts you don’t need to. The manual also covers the range gear shift for both two-wheel drive (F2690E) and four-wheel drive (F2690, F3990). For those working on the older F2880 series, the Kubota F2880 F3680 RCK60R-F36 2006 Workshop Manual – Factory Torque Specs and the Kubota F2880 F3680 RCK60R-F36 RCK72-F36 Technical Manual 2006 are related resources.

Source Authenticity: Why This Matters

Aftermarket manuals often skip the safety decal locations or the handling precautions for electrical parts. This one includes both, straight from Kubota’s August 2013 release. The manual was issued by KiSC and contains the latest information at the time of publication. It’s not a compilation – it’s the original workshop manual. The same document Kubota dealer techs use. If you’re also servicing wheel loaders, the Kubota R420B R520B Workshop Manual – Factory Specs for Wheel Loaders follows the same level of detail.

One more thing – the manual references external resources like the Diagnosis Manual for V1505-T-E4 and the Diesel Particulate Filter Handling Manual. Those are separate documents, but this manual gives you the core service procedures. For background on how a Manual Transmission functions, that’s a different topic, but the HST section here explains why these machines use hydrostatic drives. The PTO section also touches on Manual Transmission principles for the range gear shift.

Does this manual cover the RCK72P-F39 mower deck?

Yes. The manual includes the RCK72P-F39 and RCK72R-F36 in its scope.

Can I use this manual for a 2008 model?

No. This 2013 edition matches the F2690E, F2690, F3990 series produced around that year.

What torque values are given?

The manual includes a complete section on tightening torques for general use screws, metric screws, American standard UNC/UNF threads, and plugs. It also provides specific torque values for engine components such as cylinder head bolts, connecting rod caps, and crankshaft bearing caps. For the transmission, you get HST charge relief valve torque specs, and for the mower deck blade bolts. All values are in ft-lbs and inch-pounds as applicable. You’ll find these in the General section under ‘Tightening Torques’ and repeated in the Engine Servicing section with additional component-specific values.

Is this an OEM manual or a reprint?

This is a genuine Kubota factory workshop manual, not a third-party copy or scan.

You need the factory data to do the job right the first time without stripping threads or causing leaks. Access the Factory Manual now and get the 413-page PDF that belongs on your shop tablet.