FMC Bolens 1660 Parts Catalog

You’ve got a FMC Bolens 1660 sitting in the yard with a busted trim hood or a missing seat. You pull up a random parts diagram off some forum, and the part numbers don’t match. Now you’re out fifty bucks on the wrong cap screw. I’ve been there. That’s why I keep a factory FMC Bolens 1660 Parts Catalog on the shelf. This is the 23-page document FMC printed for the Model 1660 (QS-16) tractors with the 16 HP Kohler engine. It covers serial numbers 0100101 through 0299999. No aftermarket guesswork – these are the exact pages the dealer used.

The 23-Page Factory Parts Breakdown

Page 1 identifies the model, serial range, and engine. Page 2 kicks off the actual parts list with Figure 1: Trim Assembly. Each page after that lists reference numbers, factory part numbers, descriptions, and quantities required. The catalog runs 23 pages total – not a reprint, not a scan of a scan. This is the original OEM layout with the FMC logo and part numbers you can cross-check.

Check the Trim Assembly Section First

If you’re replacing the hood or grille, flip to page 2. Figure 1 shows the Trim Assembly. The parts list includes items 1 through 50, covering the seat (part 1723525), support assembly (1736007), trim hood (1726932), decals, rear panel assembly (1727523), and all the hardware – capscrews, lockwashers, whiz-lock screws. Each part has a specific factory number. For example, the grille and hood assembly is part 1727176. You won’t find generic substitutes here.

What Does the Parts Catalog Cover for the 1660?

This catalog covers the tractor chassis and attached components: trim assembly, rear fender assembly, rear panel, grille and hood assembly, seat, decals, and all brackets, fasteners, and trim pieces. It lists decals for service instructions (1725624), identification decals (1727479, 1727480), and even the spray paint part numbers (1729344 black, 1725794 white). It does not cover the Kohler 16 HP engine internals – that’s a separate manual. What it does give you is every nut, bolt, washer, and panel specific to the 1660.

Factory Specs: Why I Won’t Touch Aftermarket Parts Lists

I’ve seen aftermarket lists that swap part numbers, omit the lockwasher, or use a generic 3/8 washer when the factory calls for a specific flat washer (part 1107383). This catalog came straight from FMC Bolens. It lists lockwasher 3/8 (part 1103212) and capscrew 3/8-16 x 5/8 (also 1103212 – that’s how FMC printed it). Every fastener has a thread size, length, and finish. The exploded diagrams show where each part goes relative to others. If you’re restoring a 1660, you need this level of accuracy. For context on why OEM documentation matters in the broader industry, check the Automotive Industry Overview and Automotive Industry Overview.

3 Reasons to Rely on OEM Parts Documentation

First, correct part numbers match your serial range – this catalog covers 0100101 through 0299999. Second, exploded diagrams show assembly order and relationship between parts. Third, no ambiguous “equivalent” substitutes – you get the exact factory piece. Period.

How This Catalog Helps Beginners and Owners

If you’re a home garage enthusiast trying to fix a cracked rear fender or replace a missing decal, this catalog saves you the headache of ordering blind. Every item number links to a diagram. You can walk into a dealer or search online with a seven-digit part number and get the right piece. The FMC Bolens 1666 Parts Catalog – 23 Page Factory Parts List”>FMC Bolens 1666 Parts Catalog and FMC BOLENS Tractor 10 HP Model 1055 Parts List”>FMC BOLENS Tractor 10 HP Model 1055 Parts List cover other models if you need them. Also see the FMC HCD-80B Service Manual Index”>FMC HCD-80B Service Manual Index for service procedures.

Does this catalog include engine parts?

No. This catalog is for the tractor chassis only. Engine parts require a separate Kohler manual.

How do I use the part numbers to order?

Each part number listed corresponds to the exact factory component. Contact your local FMC Bolens dealer or search online using the seven-digit number. Note that some items have a quantity note like (2) indicating two required. See page 2 for the Trim Assembly example: the seat (1723525) needs one, but the capscrew 3/8-16 x 5/8 (1103212) needs four. If you order from a dealer, give them the part number and the quantity from the catalog. For decals, the catalog lists multiple identification decals – verify your serial range (0100101-0299999) matches before ordering. The serial number is stamped on the tractor frame.

If you want to fix the 1660 without ordering wrong parts, download the factory manual. It’s a PDF, 23 pages, ready to print. Stop guessing and get the right part number the first time. Download the Factory Manual.