GEHL 253, 303, 353, 373 2011 Operators Manual

You just picked up a used GEHL compact excavator – 253, 303, 353, or 373 model. The previous owner handed you a greasy pile of photocopies. That’s not going to cut it. I’ve seen too many guys guess at hydraulic oil capacities and blow a seal. This GEHL 253, 303, 353, 373 2011 Operators Manual is the factory document. 116 pages, straight from GEHL. No third-party guesswork. Page 1-5 has Model 253 engine specs – displacement, power, oil capacity. The same goes for the other three models. You need these numbers before you open a wrench. That’s the difference between a job that lasts and a comeback.

116 pages of pure GEHL documentation.

GEHL 253–373 Operators Manual: Factory Data You Can Trust

Chapter 1 covers specifications for each model individually. You get engine specs, hydraulic system pressures, undercarriage dimensions, dozer blade width, bucket capacity, noise levels, even load diagrams. The fluid capacities and lubricants table is in that chapter. If you are swapping a motor or doing a rebuild, these numbers are mandatory. Fill the hydraulic system with the wrong oil and you are looking at a hydrostatic drive failure. That’s expensive.

Safety Chapter: Mandatory Shutdown and Battery Hazards

Page 2-1 starts the safety section. It covers the mandatory safety shutdown procedure – you have to read it before you start the machine. Also battery electrolyte hazard, explosive gas, and how to disconnect the battery. Section 2 goes into fire hazards and recommends a fire extinguisher. The high pressure lines store energy warning is in that chapter. Never loosen a fitting under pressure – that kind of stuff saves your life.

3 Critical Maintenance Procedures from Chapter 4

Chapter 4 is the maintenance schedule. Three procedures I see guys mess up: changing engine oil and filter, adjusting track tension, and purging air from the fuel system. The manual gives you the exact intervals – service hours for oil change, track sag measurement. For the fuel system, it shows how to bleed air after a filter change. Follow the procedure exactly as written – never skip the filter pre-fill step. When you need replacement parts, pair this manual with the GEHL 253 Compact Excavator Parts Catalog. For the 303 model, get the GEHL 303 Compact Excavator Parts Catalog. If you have an older 303, the Gehl 303 2008 Parts Catalog covers that variant.

Does the Safety Section Cover Hydraulic Line Hazards?

Yes. The safety chapter includes a specific warning about high-pressure hydraulic lines storing energy. It advises to release pressure before disconnecting. Also covers hydraulic cylinder seal periodic replacement – another detail most operators miss. That section alone is worth the price if it keeps you from a trip to the ER.

Troubleshooting: When the Engine Won’t Crank

Chapter 5 gives you a troubleshooting flowchart for engine issues – indicator lamps, seals, hoses, traveling gear, bucket/boom/dozer blade. It’s not a full diagnostic tree, but it covers the common failures. For example, if the engine won’t crank, check the indicator lamps section. That’s where you find the fuse panel diagram from Chapter 1. If you need to understand gear trains outside of excavators, read up on Manual Transmission on Wikipedia. The principles are different, but the logic of power flow applies.

Why You Want the OEM Print Over a Reprint

This is a GEHL factory manual. Printed in USA, 2011. It has the original part numbers, decal placement diagrams for both ANSI and ISO machines, and the exact load diagrams. Aftermarket manuals often crop out the safety pages or use fuzzy images. You don’t get the official warranty statement or the proper fluid capacities. For the final drive, the clutch packs are not like a Manual Transmission, but the manual gives the correct oil type. Don’t trust a $10 reprint when your machine costs $40,000.

Does this manual include torque specs for the cylinder head bolts on the 353?

No. This is an operators manual, not a service manual. It covers fluid capacities, not internal engine torque values.

What is the difference between the ANSI and ISO safety decal sections?

The manual includes both ANSI and ISO decal locations. Early machines use ANSI-style decals; later machines use ISO-style. The decal part numbers and placement are different. The manual includes diagrams for each location. You need to know which version your machine has to order correct decals. Mixing them up could mean missing a warning symbol, which exposes you to liability. The manual tells you where each decal goes, and gives the replacement part numbers.

You’ve seen what happens when a tech uses the wrong hydraulic oil. Don’t be that guy. Get the actual factory document. Download the Factory Manual and keep it in the cab.