This 4-page Bolens 18322 parts catalog PDF (OEM #P-553542) breaks down the complete 33 inch tiller attachment, covering both gear drive and hydrostatic models plus the optional 18320 extension. You get the full tiller assembly diagram, a gear case assembly view with its own parts list, factory part numbers for every tine, shaft, and bearing, and a common hardware reference for the fasteners nobody ever labels. Serial number ranges up front confirm you're ordering for the right build. When you refill the gear case, it takes 20 oz. of gear lubricant; the factory tubes hold 8 oz. each, so grab three. NOS parts and swap-meet finds don't come tagged, and guessing gets expensive. Bookmarked with a real text layer; open it on any screen in the garage, match your part number, and get the tiller turning dirt again this season.
What's Inside This Bolens 18322 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Model and Serial Number Identification | 1 | Model 18322, Serial Number Range, Form P-553542 |
| Inch Tiller Attachment | 2-3 | Tiller Attachment Assembly, Drive Shaft Assembly, Extension (Optional), Gear Drive and Hydrostatic Models |
| Gear Case Assembly | 4 | Gear Case, Worm Gear, Gear Case Cover, Gear Lubricant Requirements |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Gear Lubricant Capacity | 20 oz. | p. 4 |
| Gear Lubricant Tube Size | 8 oz. | p. 4 |
Bolens 18322 Common Problems This Manual Covers
Bolens 18322 tiller gear case low on lubricant, need the correct capacity and refill part number
Check the Gear Case Assembly breakdown on page 4 for the lubricant part number. The case holds 20 oz. total and the lubricant comes in 8 oz. tubes, so order three tubes for a full fill. Verify your serial number range against the cover information on page 1 before ordering.
Manual Section: Gear Case Assembly p. 4Tines stopped turning and the clevis pins are gone, can't identify which pins to order
Find the tine clevis pins in the chassis exploded view on page 2, then pull the exact part numbers from the parts number list on page 3. Note whether your tractor is a gear drive or hydrostatic model before ordering; page 2 breaks the assembly out separately for each. Count every missing pin so you order a full set.
Manual Section: Inch Tiller Attachment Parts List p. 2Engine runs but tines won't engage, need the right drive belt and idler part numbers
Check the belt callout in the chassis parts diagram on page 2 and match it to your drive type; gear drive and hydrostatic models use different parts. While the belt is off, compare your idler assembly against the same exploded view and order worn pulleys at the same time. Cross-reference every number on the parts list on page 3.
Manual Section: Inch Tiller Attachment Parts List p. 2Want a wider tilling path but unsure what parts the optional extension kit includes
Look up the optional 18320 extension in the parts diagram on page 2, where it is shown alongside the main tiller assembly. Pull the individual part numbers from the extension parts list on page 3, then use the common hardware reference on the same page to sort out which bolts and nuts you already have in the shop.
Manual Section: Parts List Reference p. 3Frequently Asked Questions
What are the replacement specifications for tines?
The tiller uses two types of tines: the left-hand bend (part number 1709388) and the right-hand bend (part number 1709387). There are 12 of each required for the standard assembly, and 3 of each required for the optional extension. p. 3
What is the required amount of gear lubricant for the gear case assembly?
The gear case assembly requires approximately 20 ounces of gear lubricant for proper operation. p. 4
What is the part number for the heavy-duty worm gear lubricant?
The heavy-duty worm gear lubricant is available in an 8 oz. tube under part number 1722788. p. 4
What is the part number for the dark green spray paint used for touch-ups?
The dark green spray paint used for the tiller attachment is identified by part number 1736796. p. 3
How many carriage bolts are required for the optional hood extension?
The optional hood extension requires 18 carriage bolts (part number 1186098) to secure the assembly. p. 3
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