Tornado Brush Pulley w/#10-32 Set Screw 19161

This is the driven pulley on the brush shaft — the one the timing belt turns. It is supplied complete with its #10-32 set screw, which is the part most often lost and the part that decides whether the pulley stays where it belongs. Part number 19161 is the genuine OEM brush pulley.

Compatible Models for the Brush Pulley w/#10-32 Set Screw

This part is shared across a wide run of machines. On the Marathon 1200 family it is fitted to:

• 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)
• Fits many other machines — call 763-535-0770 and we will confirm fitment for your machine.

Almost every pulley failure on this machine starts with a loose set screw. The pulley creeps on the shaft, the screw point hammers a flat into the shaft surface, and once that flat is there the screw can never grip properly again. The pulley then slips under load, the belt timing goes, and the symptom presented is a brush that stops turning when the machine is pushed into thick carpet.

Check it before you buy anything: with the belt off, try to turn the pulley on the shaft by hand. It should not move at all. If it does, look at the shaft under the set screw as well as at the pulley — a wallowed shaft means the shaft needs replacing too, and fitting a new pulley alone will reproduce the fault within weeks.

The teeth are the other wear point. A timing pulley with rounded tooth crests no longer holds the belt positively, and it will strip belts no matter how new they are. Compare the tooth profile against the drive pulley at the other end — if one is visibly more rounded than the other, that is the one that has been doing the slipping.

Alignment is what kills both. A belt that is not running square walks to one side and wears one flange of each pulley, so check the two pulley faces with a straight edge before refitting anything. Misalignment usually comes from the motor base or the brush plate rather than from the pulleys themselves.

Fit with the shaft clean, the set screw seated on its flat rather than on a round surface, and tightened firmly but not beyond — #10-32 is a fine thread in a small size and it strips easily. Turn the drive by hand and check the belt sits square in the teeth before running it.

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 machines does the brush pulley 19161 fit?

It is fitted to the Tornado 98168 12 Gallon Self Contained carpet extractor and the 98168 20″ Marathon 1200 in all series, and it is shared across many other machines. Call 763-535-0770 with your model and serial number and we will confirm fitment before you order.

My brush stops turning in thick carpet — is the pulley slipping?

Very likely, and it usually starts with a loose set screw. The pulley creeps, the screw point hammers a flat into the shaft, and after that it can never grip properly. With the belt off, try to turn the pulley on the shaft by hand: it should not move at all.

Do I need to replace the shaft as well?

Check it. If the set screw has been loose long enough to wallow the shaft under it, a new pulley alone will work loose again within weeks. Look at the shaft surface under the screw, not just at the pulley bore, before deciding.

How do I order the Brush Pulley w/#10-32 Set Screw (part# 19161) or get help?

You can add the Brush Pulley w/#10-32 Set Screw (part# 19161) 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.