Washer 18886
$18.99
Genuine Tacony OEM Washer (part# 18886) for the Tornado Marathon SE 900 (Model 98170) and Powr-Flite Prowler PFX900S. A flat washer that spreads fastener load and protects the mating surface so the joint stays tight under vibration.
The Washer (part# 18886) is a genuine Tacony OEM replacement part from the recovery and solution tank assembly of the Tornado Marathon SE 900 self-contained carpet extractor. It is the flat load-spreading washer used under fasteners through the tank assembly.
What the Washer does
This washer sits under a bolt or nut head and spreads the clamping load across the plastic tank wall instead of concentrating it on the fastener face. On a rotomoulded tank that flexes as it fills and empties, that spread is what stops the fastener slowly pulling through the shell.
When to replace the Washer (18886)
Replace it when it is dished, corroded, or has bitten a groove into the tank surface. A washer that has cupped is no longer spreading load and the joint under it will already be loosening. Any washer removed during a tank repair should be replaced rather than reused.
Washer 18886 — fitment and installation notes
Fit the washer against the plastic, not against the bolt head, and tighten to snug — the washer prevents crush damage but will not save an over-torqued joint. Tacony builds the Tornado Marathon SE 900 and the Powr-Flite Prowler PFX900S on a single machine platform, so this component carries across both brands rather than belonging to either one. It is a shared Tacony component and may fit additional models beyond those listed — call us and we will confirm against your serial number.
Compatible Models for the Washer
- Tornado Marathon SE 900 — Model 98170
- Powr-Flite Prowler PFX900S
- Powr-Flite PFX900SG
Twin City Vacuum has been selling and servicing commercial floor-care equipment since 1956 from 5415 West Broadway, Crystal, MN 55428. We stock genuine Tacony parts and ship nationwide. Browse the full Tornado 98170 parts catalogue, or see the manufacturer at tornadovac.com.
Frequently Asked Questions
What does the Washer do on the Tornado Marathon SE 900?
This washer sits under a bolt or nut head and spreads the clamping load across the plastic tank wall instead of concentrating it on the fastener face. On a rotomoulded tank that flexes as it fills and empties, that spread is what stops the fastener slowly pulling through the shell.
How do I know if my Washer needs replacing?
Replace it when it is dished, corroded, or has bitten a groove into the tank surface. A washer that has cupped is no longer spreading load and the joint under it will already be loosening. Any washer removed during a tank repair should be replaced rather than reused.
What models is the Washer (part# 18886) compatible with?
The Tornado Marathon SE 900 (Model 98170), the Powr-Flite Prowler PFX900S and the PFX900SG. It is a shared Tacony part and may fit further models; call us to confirm.
How do I order the Washer (part# 18886) or get help?
You can add the Washer (part# 18886) directly to your cart on this page, or call us at 763-535-0770. Our staff at 5415 West Broadway, Crystal, MN 55428 has been servicing Tornado equipment since 1956 and can help confirm the right part for your machine.
