Yamaha YZ85P, YZ85, YZ85LW Parts Catalog – 50-Page OEM Exploded Diagrams

Description

If you are trying to order a cylinder for a YZ85P and the aftermarket website shows a picture that looks close but the bolt holes are off, you know the frustration. I have seen it too many times—guys spend hours cross-referencing parts because they trusted a third-party “compatible” list. This Yamaha YZ85P, YZ85, YZ85LW Parts Catalog is the factory document—50 pages of exploded diagrams and genuine part numbers. No guesswork.

You get the exact OEM number for every component: engine, cylinder, crankshaft, transmission, suspension, fuel system, brake system. Page 4 explains the part numbering system and how to read the catalog. Page 5 shows the model label location so you confirm your bike’s production code before ordering.

YZ85P/YZ85/YZ85LW Parts Catalog: Exploded Diagrams for Engine and Chassis

The engine section covers cylinder, crankshaft & piston, water pump, radiator hose, intake, carburetor, exhaust, crankcase, covers, starter, clutch, transmission, shift cam fork, shift shaft. Each subgroup has its own exploded view with callouts and quantities. The chassis section includes frame, fender, side cover, rear arm, rear suspension, steering, front fork, fuel tank, seat, front and rear wheels, brake calipers, master cylinders, handle/switch, generator, electrical, and optional parts.

Why OEM Part Numbers Matter for Your YZ85?

Aftermarket catalogs often use superseded or incorrect numbers. A wrong crankshaft means a rebuild that fails. Yamaha’s own document uses the original engineering codes—no translation errors. If you see a “UR” notation, that means use that specific part number, no substitute. The numerical index at the back lets you find any part number quickly. I have seen shops order three different “compatible” pistons before getting the right one. Avoid that waste.

50 Pages of Factory Diagrams

Every page is a scan of the original Yamaha print from 2001. The diagrams are not redrawn—they are the same ones dealers used. You get the reference numbers and the corresponding part numbers in the list. This is a parts catalog, not a service manual. For assembly procedures and torque specs, you need the factory service manual. But for ordering the correct Yamaha genuine parts, this is the only source you should trust.

Get the Right Part Number the First Time

When you open this catalog, look for the model code at the top of each section. The YZ85P (5PA1) for USA/Canada has different parts than the YZ85LW (5SH1) for Europe. The catalog clearly separates them. Do not assume cross-compatibility—check the production code on your frame label. If your bike has a production code not listed, you may need to order locally or consult Yamaha Parts News for modifications. The foreword on page 4 explains abbreviations like “UN” (use as many as needed) and “AP” (alternate parts).

Model Label Identification: Page 5 and What It Means

Page 5 shows where the model label is affixed (usually on the frame neck) and how to read it. The model code and production code number must match the catalog. If your YZ85 has a production code not listed, you may need to order locally or consult Yamaha Parts News for modifications. Take five minutes to verify before clicking “buy”.

If you work on multiple bikes, you might also need the Yamaha YZF-R1 2002 Parts Catalog – OEM Factory Part Numbers”>Yamaha YZF-R1 2002 Parts Catalog for sportbike engines. For older models, the Yamaha GTS1000AE 1993 Parts Catalog – Factory Microfiche PDF”>Yamaha GTS1000AE 1993 Parts Catalog covers the complete parts breakdown. Smaller displacement bikes like the Yamaha V125 Parts Catalog – OEM Factory Part Numbers & Diagrams”>Yamaha V125 Parts Catalog follow the same diagram format. For background on how standardized part numbering evolved, see the Automotive Industry Overview”>Automotive Industry Overview on Wikipedia. To understand the two-stroke engine internals, refer to Internal Combustion Engine”>Internal Combustion Engine.

Can I use this catalog to rebuild my engine?

No, only part numbers. Use the service manual for assembly.

Does the catalog cover the YZ85LW’s taller suspension components?

Yes. The YZ85LW sections are listed separately under Chassis – Rear Suspension and Front Fork. The suspension parts have their own part numbers distinct from the standard YZ85. Look for the model code 5SH1 or 5SH3 in the headings. For example, the rear arm and shock are specific to the LW model. If you order standard YZ85 suspension parts for a LW, they will not fit correctly. Always cross-reference the diagram with your bike’s model label to ensure you are selecting the correct subgroup. This catalog includes optional parts as well, such as different spring rates. The exploded diagrams show the exact assembly order, which helps when disassembling.

Stop guessing part numbers and ordering the wrong gasket set. Access the Factory Manual now.