Description

Hyster S2.0FT, S3.5FT, S2.5FT, S3.0FT Service Manual

You’ve got a Hyster S2.0FT sitting on the lift and you’re about to pull the cylinder head. How do you set the valve clearance? What’s the torque sequence for the head bolts? If you’re reading a generic manual, you’re guessing. That’s not how we work in my shop. This Hyster S2.0FT, S3.5FT, S2.5FT, S3.0FT Service Manual is the actual OEM document from Hyster—48 pages of factory procedures, specs, and torque values. No reprint, no copy, no aftermarket mess.

Cylinder Head Repair – Every Step from Removal to Clearance Adjustment

The manual walks you through the entire process: Remove and Disassemble, Clean and Inspect, Valve Guides and Seats, Valve Lapping, Valve Guide Replacement, Valve Seats Inspection and Repair, Valve Springs, Assemble and Install, and finally Valve Clearance Adjustments. Each step is laid out in sequence with the exact clearances and fit specs you need—none of that “use common sense” nonsense. You’ll know the rotor lobe clearance limits for the oil pump, the valve seat contact width, and the spring free length before you start. Page 2 has the safety warnings that will keep you from doing something stupid—wear your glasses, disconnect the battery, and don’t lift heavy parts by hand.

Lubrication System: Oil Pump Rotor Clearances and Assembly

Oil pump failure on these Kubota LPG engines usually happens because someone didn’t check the rotor clearance before reassembly. This manual gives you two critical checks: Rotor Lobe Clearance and Rotor Cover Clearance. You’ll need a feeler gauge and a straightedge—specs are in the table. I’ve seen shops skip this and then wonder why they have no oil pressure at idle. Don’t be that guy. Follow the procedure for remove, inspect, assemble, and install the oil pan and pickup as well.

Engine Specifications – Torque Values You Can Trust

The last section of the manual is where all the real numbers live: Engine Data and Torque Specifications. Head bolts, main bearing caps, flywheel bolts—every fastener has a torque in ft-lb. If you’re used to aftermarket manuals that give you a range and say “tighten securely,” you’ll appreciate having an exact number and sequence. These are the same values the Hyster factory uses. No guessing, no rounding, no “close enough.”

Fan Belt Installation – Don’t Over-Tension It

Three steps: Remove, Inspect, Install. The manual tells you how to check belt deflection and what tool to use. Over-tensioning a fan belt on these engines kills the water pump bearing. The manual gives you the spec—not a finger-tight guess. And if you’re doing a thermostat repair, it’s also in here: Remove, Thermostat Operation Check, Install. The check includes a hot water test at the specified temperature range.

Why OEM Beats Aftermarket Reprints for This Hyster Manual

I’ve seen aftermarket copies that skip the safety page, reverse the tightening sequence, or spell out “inch pounds” when they mean foot-pounds. This is a direct Hyster publication—part number 4102615, SRM 1670. It’s printed from the factory source, not scanned and OCR’d. The illustrations are clear, the warnings are orange and yellow (as per Hyster’s standard), and the chapter headings match exactly what you’d get if you bought it from a Hyster dealer. If you’re the kind of tech who verifies every spec, this is the only version worth having on your bench.

If you’re also maintaining other Hyster models, check out the HYSTER S2.0FT Series Service Manual for model-specific details, the Hyster A513 A514 A613 A614 A702 2014 Service Manual for those units, or the Hyster S4.0, 4.5, 5.5FT, S5.5FTS, S80 2012 Service Manual for bigger forklifts. For general engine theory, a good Manual Transmission guide can help you understand rotating assembly dynamics, and if you’re ever tackling a gearbox rebuild, the Manual Transmission section in any OEM manual is a must-read.

FAQ

Does this manual cover the LPG fuel system?

Yes, it covers the Kubota 2.5L LPG engine used in these models.

Why should I buy this instead of a third-party manual?

Third-party manuals often omit critical safety warnings, use incorrect torque values, or reprint outdated information. This OEM manual from Hyster includes factory-correct specifications for rotor lobe clearance, valve seat angles, and all torque sequences. It also contains the official safety precautions on page 2—like disconnecting the battery ground cable and using correct lifting equipment—that aftermarket versions frequently cut. If you’re doing a cylinder head or crankshaft job, one wrong torque value can cost you an engine. This manual eliminates that risk.

Access the Factory Manual and get the actual Hyster procedures for your S2.0FT, S2.5FT, S3.0FT, or S3.5FT. Your shop will thank you.