Description

GEHL HA1000 Parts Catalog – What You Need on the Bench

I’m Mike Callahan. You’re a tech or a DIY guy trying to get a GEHL HA1000 hay attachment back in service. The part you need is on the drawing, but the number you ordered doesn’t fit. That’s because you used the wrong serial number cutoff. This 28-page GEHL HA1000 Parts Catalog from the factory is what you should have had from the start. No aftermarket reprints, no generic part lists – this is the document that GEHL shipped to dealers.

Main Frame, Flotation & Guards – Two Serial Number Breaks

This manual splits the main frame section at serial number 4878. Pages 4-7 cover machines built before #4878, and pages 8-11 cover after #4877. If you order the wrong frame bracket because you skipped checking the serial plate, that’s on you. The plate is on the right side of the main frame below the Quick-switch Yoke. Right and left are determined standing behind the unit facing travel direction – don’t guess. The flotation accessory and guards follow the same break. Get the serial number first, then flip to the right page.

Hardware Specifications – Grade 5 and Zinc Plated

Common hardware like nuts and cap screws are listed but not illustrated in the exploded views. Every cap screw or bolt in this catalog is Grade 5, cadmium or zinc plated unless noted otherwise. Hexagon nuts for Grade 5 fasteners are Grade B, others are Grade A. That matters when you’re replacing a bolt that holds the pickup drive in place. Use a lower grade and you’ll have a failure. The manual uses standard abbreviations: HHCS, FHMS, SHSS, etc. Familiarize yourself with them before you call the parts counter.

Pickup & Drive and Auger & Drive Sections

Pages 12-15 cover the pickup and drive. Pages 16-17 cover the auger and drive. These are the high-wear areas on any hay attachment. If you need the pickup reel tine or the auger flighting, the part number is right there. Important: order by part number, not by the illustration reference number. The manual spells that out on page 4. Follow it.

Water Tank Kit 801892 and Flotation Accessory

This catalog includes the optional water tank kit (part number 801892) from pages 18-22, and the flotation accessory for machines before serial #4878 on page 23. If your unit has the water tank, you need those pages. The kit includes the tank bracket, valve, and plumbing. The flotation accessory is a separate setup – don’t confuse the parts between models. Aftermarket catalogs often mash these together. The OEM document keeps them clean.

Decal Location and Numerical Index – Finding Parts Fast

Page 24 shows decal locations – safety decals and identification plates. Pages 25-26 contain the numerical index. This is where you go when you have a part number from the field but don’t know which assembly it belongs to. The index lists every part number in the manual and maps it to the page where it appears. When you’re down on a hay rake and the customer is waiting, that index saves you time. Compare that to paging through a generic PDF – no contest.

This manual doesn’t include engine overhaul procedures. It’s a parts catalog, not a service manual. But if you’re matching parts to an engine that powers the tractor, understanding the attachment’s parts breakdown helps. For engine background, see this Wikipedia article on diesel engines. For related GEHL parts manuals, check the GEHL SL4640, SL4840, SL5640, SL6640 2005 Parts Catalog, the GEHL SL7610, SL7710, SL7810 2005 Parts Catalog – OEM Factory Specs, and the GEHL RS6-34 2013 Parts Catalog – Factory OEM Manual.

Frequently Asked Questions

What if my GEHL HA1000 has a serial number before 4878?

Use the parts listings on pages 4-7 for the main frame, flotation, and guards. The manual explicitly splits at that number. If you use the later section you’ll get the wrong brackets and guards. The serial plate is on the right side of the main frame below the Quick-switch Yoke. Write it down before you open the manual.

Does this manual include common hardware like bolts and nuts when I order a part?

No. Hardware is listed but not included when ordering a replacement part. You buy fasteners separately.

Is this the same as a service repair manual?

No. This is a parts catalog. It shows exploded views and part numbers. For removal and installation procedures you need the service manual. But for ordering the correct replacement part, this is the only document that matters.

How do I know which frame revision I have if the serial number is close to 4878?

Check the serial plate. The break is at serial #4878. Units before that use pages 4-7; units after #4877 use pages 8-11. There is no overlap. If your machine is #4878 exactly, use the “After Serial #4877” section. GEHL’s numbering is sequential.

You need the factory part numbers to order the right components without returning boxes. This 28-page PDF gives you the exact illustrations, hardware grades, and numerical index. Access the Factory Manual now and get the part numbers that match your serial number.