Most wrong-part orders on power trowels come from the same shortcut: ordering by machine size instead of model and serial number. A 36" walk-behind isn't one machine — it's a dozen different builds across Whiteman, Multiquip, and Wacker Neuson, and the clutch, spider, and gearbox internals change between them. Here's how to get the right trowel machine part the first time.
Start at the brand plate
Every trowel carries an ID plate — on walk-behinds it's typically on the frame or gearbox housing near the engine; on ride-ons, on the frame near the operator platform. You need three things off it:
- Brand. If the plate says Whiteman, you're in the Multiquip parts system — Whiteman is Multiquip's trowel line and the part numbers cross directly. A 24" Whiteman walk-behind, for example, takes the C244 combo blade.
- Model. The full string, suffix letters included: CT36-8A-V, CRT48-35L, BH11C, HHN31VT. The suffix is often what separates two different clutch or gearbox setups that look identical from the handle.
- Serial or spec number. Manufacturers change parts mid-production without changing the model name. Wacker Neuson's spider hub for the CRT48-35L ride-on (part 5100018826) supersedes an earlier part number — same model on the plate, different production run, different hub — which is why the serial and spec numbers off the plate matter.
Take a photo of the plate now, while it's still readable. A few years of concrete dust and pressure washing will fix that.
Walk-behind and ride-on parts don't cross
Same brand, same blade diameter, completely different parts book. Walk-behinds run a single rotor off a centrifugal clutch, with controls on the handle: think Multiquip's BH11C clutch (22891), the throttle cable kit (5100034471) and throttle lever kit (5000163391) for the Wacker CT36-8A-V, a walk-behind belt guard (30112), or the blade-adjust cable assembly (1714).
Ride-ons run twin rotors with pitch controls at the seat and bigger power on the deck. That parts list looks different: a drive belt for the Multiquip HHN31VT (20138), the rider pitch-control knob kit (2737), left and right lift rings for the Wacker CRT48-35L (5000153535 / 5000153528), a temperature switch for Wacker ride-ons (5200015390), and diesel engine parts like the exhaust manifold (1J710-12310) and manifold gasket (1J700-12350) for the Kubota V2607. Ordering a "trowel clutch" without saying which side of that line your machine sits on is how the wrong box shows up.
The part families that wear
- Blades. The number-one consumable. Combo blades like the C244 cover float and finish work on 24" machines; match blade type to machine diameter and model, not just size.
- Arms and spiders. A dropped or crashed trowel bends yoke arms (Multiquip 1150) and wears spider hubs (Wacker 5100018826). The spider shaft hardware wears too — hex head screw (5200003321), washer (5000182642), and plug cap (5000180086) at the bottom of the shaft that holds the spider plate. Uneven blade wear or a wobble in the finish usually points here.
- Clutches and belts. Centrifugal clutches (22891) and drive belts (20138) are the classic mid-season failures. Belts glaze, clutches slip — replace them before a pour, not during one.
- Gearboxes, bearings, and seals. Complete gearbox assemblies (20882), worm gear output shafts (30635), ball bearings (5000116781), bushings (5000151243), and sized oil seals like the 20X40X10 TC. Keep the box topped with the right lube — ISO 220 gear oil (Multiquip 23992) — and most of this list stays on the shelf.
- Controls and small hardware. Throttle kits, pitch cables, grips (22762), springs (1316), brass nuts (1116), key stock (5000188123). Cheap parts that stop a machine cold when they fail.
- Engine parts. Trowel engines are their own lookup: a Briggs & Stratton carburetor assembly with solenoid valve (825656) or Kubota V2607 exhaust components come off the engine model plate, not the trowel plate.
Order by OEM part number
The fastest path to the right part is the number itself — off the old part, the parts diagram, or the operator's manual. Search it directly at tandlequipment.com; roughly 13,700 parts are listed online by OEM number. If you'd rather browse, start with the power trowel parts collection, or go by brand: Multiquip / MQ parts and Wacker Neuson parts.
No number? No problem. Call with the brand, model, and serial off the plate and we'll run the lookup, including superseded numbers that have been replaced since your machine was built.
Get it on the truck
Call T&L Equipment at (702) 798-4149, Monday–Friday 7 AM–4 PM (closed 12–1 for lunch). Orders placed by 12 PM ship the same day, and parts orders over $500 ship free. Local crews can also swing by the shop at 3802 Civic Center Dr. in North Las Vegas — we've been matching trowel parts to machines since 1998.