Tornado Spring 10841

Part number 10841 is a genuine OEM spring for the MWH-800, Marathon 800 and Marathon 1200 extractors. A spring is defined by its rate rather than by its dimensions, which is why swapping in one that looks the same is the classic way to end up with a mechanism that closes but does not hold, or holds but will not release.

Compatible Models for the Spring

This part fits the following Tornado machines:

• Tornado 98164 MWH-800 8-Gallon Self-Contained Carpet Extractor
• Tornado 98166 20″ Marathon 800 Carpet Extractor (8 Gallon, 115V)
• Tornado 98167 20″ Marathon 800 Carpet Extractor (8 Gallon, 230V)
• Tornado 98168 12 Gallon Self Contained Carpet Extractor
• Tornado 98168 20″ Marathon 1200 Carpet Extractor (12 Gallon, 115V) — all series
• Tornado 98169 20″ Marathon 1200 Carpet Extractor (12 Gallon, 230V)

Springs fail by losing rate rather than by breaking, and that is the hard part of diagnosing them. A spring that has taken a set is a little longer at rest and noticeably weaker in use, but it looks entirely normal. Measure the free length against a new one if you can; failing that, compare the effort needed to compress or extend it against how the machine used to feel.

What causes a set is being held at full compression or full extension for long periods, or being overloaded once. A mechanism that has been forced — a shroud shut over a jammed brush, a latch pushed past its stop — can take the rate out of a spring in a single event, and the machine then feels slightly wrong from that day on without anything visibly wrong.

Corrosion is the second cause and it is worse than it looks. A spring works its whole surface every cycle, so a pit is a stress raiser in exactly the wrong place, and a corroded spring breaks without warning rather than degrading gracefully. Detergent reaches most of this machine, so a spring with visible rust should be replaced rather than watched.

When a spring has broken, look for the other half before reassembling. A broken coil loose inside a mechanism jams it at the worst moment, and the missing piece is small enough to overlook.

Fit it in the same orientation as the one that came out — some springs have a closed end and an open end and work correctly only one way round — and work the mechanism by hand a dozen times afterwards to check it both engages positively and releases cleanly.

Browse every assembly for this machine on the Tornado 98168 Marathon 1200 parts hub, and see the manufacturer’s range at tornadovac.com.

Frequently Asked Questions

What Tornado machines does the spring 10841 fit?

It is used on the Tornado 98164 MWH-800 8-gallon self-contained extractor, the 98166 and 98167 20″ Marathon 800, the 98168 12 Gallon Self Contained extractor and the 98168 20″ Marathon 1200 in all series. Call 763-535-0770 with your model number if you are not sure.

How do I know a spring has failed if it is not broken?

Springs fail by losing rate, not by breaking. A spring that has taken a set sits slightly longer at rest and is noticeably weaker in use while looking entirely normal. Measure the free length against a new one, or compare how much effort the mechanism now takes against how it used to feel.

Can I substitute a spring that looks the same?

It is the classic way to end up with a mechanism that closes but will not hold, or holds but will not release. A spring is defined by its rate rather than its dimensions, and two springs of identical length and diameter can behave completely differently.

How do I order the Spring (part# 10841) or get help?

You can add the Spring (part# 10841) 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.

Questions? Call us at 763-535-0770 or visit us at 5415 West Broadway, Crystal, MN 55428.