Lock Washer X8212
$2.99
Genuine Tacony OEM lock washer (part# X8212) used on the Tornado Marathon SE 900 (Model 98170) and Powr-Flite Prowler PFX900S chassis. Holds tension in a joint that vibrates for a living.
The Lock Washer (part# X8212) is a genuine Tacony OEM replacement part from the chassis assembly of the Tornado Marathon SE 900 self-contained carpet extractor. It is the spring lock washer that keeps a fastener under tension so it resists loosening from vibration.
What the Lock Washer does
A lock washer works by staying partly compressed. The split ring pushes back against the fastener head, so as the joint settles and micro-movement takes up the slack, there is still tension in the thread instead of a nut sitting loose against a face. On a machine with a brush motor, a vacuum motor and a pump all running at once, that stored tension is what keeps a chassis joint tight between services.
When to replace the Lock Washer (X8212)
Replace it when it has been flattened to a plain ring, when it has lost its split gap, or when it is cracked or corroded. A lock washer that lies flat on the bench has no spring left and is doing nothing at all in a joint.
Lock Washer X8212 — fitment and installation notes
Fit it directly under the head or nut that is turning, not buried somewhere in the middle of the stack, or the spring never sees the load. Use a new one on reassembly rather than reusing the flattened original, and do not stack a lock washer on top of a lock washer to make up for a joint that is actually the wrong length. 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 Lock 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 Lock Washer do on the Tornado Marathon SE 900?
A lock washer works by staying partly compressed. The split ring pushes back against the fastener head, so as the joint settles and micro-movement takes up the slack, there is still tension in the thread instead of a nut sitting loose against a face. On a machine with a brush motor, a vacuum motor and a pump all running at once, that stored tension is what keeps a chassis joint tight between services.
How do I know if my Lock Washer needs replacing?
Replace it when it has been flattened to a plain ring, when it has lost its split gap, or when it is cracked or corroded. A lock washer that lies flat on the bench has no spring left and is doing nothing at all in a joint.
What models is the Lock Washer (part# X8212) 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 Lock Washer (part# X8212) or get help?
You can add the Lock Washer (part# X8212) 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.
