Description

HMF 7274, 7278 Parts Catalog

If you’re trying to keep a Massey Ferguson MF 7274 or 7278 combine running without the factory parts breakdown, you’re wasting time and money. I’ve seen too many guys order the wrong hydraulic line or knife section because they guessed from a blurry third-party copy. This is the real thing – HMF 7274, 7278 Parts Catalog – 591 pages of OEM exploded views, part numbers, and quantities. No reprints, no aftermarket translations. You get the same book the dealer uses.

A combine has thousands of moving parts. One wrong fastener in the header can cost you a day of harvest. That’s why this catalog exists: to show you exactly which part goes where.

What the HMF 7274, 7278 Parts Catalog Actually Covers

This catalog breaks down every major assembly on the 7274 and 7278 combines. The OCR excerpt shows the Knives And Fingers section starting on page 001-0001 – that’s the header cutting system. You get item numbers, part numbers like D28283934 for a clip, D44104500 for a finger, and the exact quantity needed. The exploded diagrams are indexed with callouts so you can match the drawing to the part bin. Other sections cover the feeder house, cleaning fan, rotor, grain tank, and final drives. Each assembly has its own page range within the 591 pages.

Use the Illustrated Parts Breakdown Correctly

Open to any page and you’ll see a line drawing with reference numbers. Below it, a table with the part number, description, and quantity. Don’t skip the “Comments” column – it tells you if a part changed by serial number. For example, the support (item 12) on page 3 is listed “Up to Serial or Engine Number 939559.” Miss that and you order the wrong bracket. Always verify your machine’s serial number against the catalog.

The diagrams also show hardware like cap screws, locknuts, and washers. Those are easy to source locally once you have the OEM number. But for proprietary castings or hydraulic components, the factory number is the only safe bet. Aftermarket cross references often fail on these older Massey models.

I’ve worked on 7274s with header wobble caused by a missing shim (item 2, D28230292). The catalog shows four shims per machine – if you’re rebuilding a cutterbar, you need that exact count.

7 Systems Covered in This Parts Catalog

The 591 pages organize the combine into logical groups. You’ll find sections for: Header (including knife drives and reel), Feeder House, Rotor and Concave, Cleaning System, Grain Handling, Engine and Driveline, and the Cab/Hydraulics. Each section starts with a visual index, then the exploded parts list. The page numbering uses a prefix system (e.g., 001-0001 for header) so you can flip directly to the right group without guessing. No index? Flip to the front – the table of contents lists every section title and starting page.

Source Validity: Why This Catalog Is Different

This is an original OEM publication from HMF Massey Ferguson – not a photocopy, not a compressed scan. The part numbers are exact matches to the factory database. Aftermarket parts catalogs often renumber items or omit hardware. I’ve seen listings where a $2.50 locknut becomes a $22.00 “kit” because the seller didn’t have the individual part. With this catalog you order by the factory number and get the right part the first time. The scanned pages are clear enough to read the fine print on the callouts – critical when you’re dealing with a row of 43 identical fingers and need to know which one is left-hand. For reference on the broader industry context, see the Automotive Industry Overview and Automotive Industry Overview.

Audience: Who Needs This Catalog?

If you own, operate, or maintain an HMF 7274 or 7278 combine, this catalog belongs in your shop. Harvest season doesn’t wait for parts orders. When a knife section breaks at 8 PM on a Saturday, you need the part number to call the dealer or search online inventory. Without the catalog, you’re measuring and guessing. That costs hours. Similarly, if you’re buying a used combine and want to verify what’s installed, the exploded diagrams show every component – including options like Freeflow headers (listed on page 3).

This catalog also helps when you’re selling parts off a parted-out machine. You can identify each piece and set the right price. I’ve seen salvage yards sell header clips as “assorted” – but the catalog tells you whether you have the 20-foot or 22-foot version.

Frequently Asked Questions

Will this catalog help me find a part number for the hydraulic pump?

Yes. The hydraulic system section includes the pump, motor, and valve assemblies with full part numbers and quantities.

Can I use this catalog for a Massey Ferguson 7278 with a 22-foot header?

Absolutely. The catalog covers both 7274 and 7278 models. For the header, it lists separate part numbers for 20-foot (6.16 m) and 22-foot (6.77 m) configurations – see page pages for knives and fingers where variants are noted. The main chassis components are identical, but always check the “Comments” column for serial number splits. If your machine serial number is above 939559, verify the support bracket part because earlier and later runs used different caps. The catalog also references header draper and reel variations. Using this book, you can order the correct components for a 7278 with a 22-foot Freeflow header without calling the dealer.

Related Manuals

• HMF 7274, 7278 Operators Manual – Factory OEM Combine Manual
• HMF MF 500 1968 Parts Catalog – OEM Factory Parts Book
• HMF MF 33 Parts Catalog – Factory Parts Book (330 Pages)

Stop wasting daylight on wrong parts. Access the Factory Manual – get the exact exploded diagrams and part numbers for your 7274 or 7278 combine. You’ll have the same reference the factory techs use, and you’ll order confidently.