Description

GEHL CB1200 Parts Catalog – OEM Factory Parts Manual for Forage Harvester

If you’ve ever ordered a replacement part for a GEHL CB1200 forage harvester and ended up with the wrong feed roll assembly because you didn’t check the serial number split, you know the frustration. That wasted time adds up fast when the machine is down and the crop is waiting. This 68-page Parts Catalog is the factory-issued document that eliminates that guesswork. It’s the same book the dealer uses to pull parts from the shelf. No reprints, no third-party redraws – just the original GEHL part numbers and diagrams.

Decal Locations and Serial Number – Why They Matter

Page 2 of the catalog shows exactly where to find the model and serial number decal: on the main frame below the right Quick-switch Yoke. That serial number is your key to the right parts list. The catalog splits many assemblies by serial number ranges – for example, Feed Rolls before serial #2703 versus after #2702. Miss that detail and you’ll order the wrong bearing or shaft. Every tech I’ve trained learns to check the serial first. Don’t skip it.

Feed Rolls and Cutting Mechanism – Serial Number Splits

The Feed Rolls section covers pages 12-19 with two separate sub-sections: one for units built before serial #2703 (pages 12-15) and one for after #2702 (pages 16-19). The Cutting Mechanism on pages 20-21 also has no split, but the part numbers change depending on the year. If you’re rebuilding the cutterhead, you need the correct knife and bolt set. This catalog lists each part with its specific application. I’ve seen guys order the wrong set and then wonder why the knives don’t line up. Use the split.

Blower Drive and Universal Drives – 68 Pages of Part Numbers

Blower Drive (pages 26-27) and Universal Drives (pages 40-44) are where the complexity picks up. The Universal Drives section breaks into upper and lower feed roll drives, cylinder drive joints, and two types of telescoping drives – 1-3/4″ and 1-3/8″. Each sub-section has its own page with serial number splits. For example, the Cylinder Drive Joint Tubular Drive has a different part number before serial #2002 vs after #2001. Page 42 lists the 1-3/8″ telescoping drive, and page 43 covers the 1-3/4″ with splits. You’ll also find the Standard Hardware Torque Specifications on the inside back cover – that chart is critical for reassembly. All cap screws are Grade 5 unless noted, and hex nuts are Grade B. Torque matters.

Standard Hardware Torque Specifications – Inside Back Cover

That torque chart on the inside back cover isn’t optional. It lists torque values for common bolt sizes and grades. I’ve seen stripped threads and broken bolts because someone guessed. Don’t guess. The catalog also explains hardware abbreviations: HHCS for Hexagon Head Cap Screw, LW for Lock Washer, etc. This is the kind of detail that saves you from calling the dealer for a second order.

GEHL CB1200 Parts Catalog – Section Breakdown

Other sections you’ll find: Frame & Axle (pages 4-7), PTO & Drive (8-11), Blower & Chute (22-25), Spinner (28-29), Knife Sharpener with multiple serial splits (pages 30-37), Deflector Cap & Controls (38-39), Transmission Length-of-Cut (46-47), Bevel Gearbox (48), Cap & Shift Control Box (49), and a full Options and Accessories section (pages 51-59) covering items like the 1-inch Slotted Screen Kit, horizontal deflector extensions, tripod kits, wheel sets, and even a torque wrench accessory. The Numerical Index on pages 60-63 lets you find any part number fast.

OEM Factory Documentation – Not an Aftermarket Reprint

This is the original GEHL publication, Form No. 902495, replacing 902276. It’s not a scan of a scan. The diagrams are crisp, the part numbers match what GEHL ships. Aftermarket catalogs sometimes redraw the diagrams and shift part numbers – that’s how you end up with a bolt that doesn’t fit. Stick with factory documentation. If you’re curious about how diesel engines work, check this Wikipedia article on diesel engines for background, but for parts, use the real manual. Also see this Wikipedia article on diesel engines for related reading.

Who Needs This GEHL CB1200 Parts Catalog?

If you own a GEHL CB1200 forage harvester, work on them for a living, or manage a fleet, this catalog is a necessity. It’s not a repair manual – it won’t tell you how to adjust the knife sharpener. But you cannot order the right parts without it. DIY mechanics and pros alike need the serial number splits and the exact part references. The 68 pages cover every assembly from the frame to the deflector cap. Every part number is verified against factory drawings.

Related manuals you might need: GEHL SL4640, SL4840, SL5640, SL6640 2005 Parts Catalog for skid steer loaders, GEHL SL7610, SL7710, SL7810 2005 Parts Catalog – OEM Factory Specs for larger models, and GEHL RS6-34 2013 Parts Catalog – Factory OEM Manual for compact excavators.

That’s the bottom line. You have the machine. You need the right parts. Access the Factory Manual and get the correct part numbers the first time.