Scag Turf Tiger STT52A-27CH Replacement Engine — Kohler CH740-3172 27 HP Command PRO Horizontal Engine Click to zoom

Scag Turf Tiger STT61A-27CH Replacement Engine — Kohler CH740-3172 27 HP Command PRO Horizontal Engine

MPN Turf Tiger STT61A-27CH ENGINE

In stockReplacement Engine

Overview

🚚 Flat-rate LTL freight: $200
Ships palletized by LTL freight to the lower 48 states + DC for a flat $200. Need it fast? Choose Expedited or Need It Fast ($235.95) at checkout and we'll call you with the fastest options.

Need a replacement engine for your Scag Turf Tiger STT61A-27CH zero-turn mower? This is a brand-new, genuine Kohler CH740-3172 (Rehlko spec PA-CH740-3172) 27 HP Command PRO horizontal-shaft engine with a 1-1/8" x 3-5/32" crankshaft — the engine spec used on Scag machines such as the Turf Tiger STT61A-27CH.

Kohler Engines now operates as Rehlko; same engine, same factory, same part number. Ships new in the crate with the manufacturer's engine warranty.

Before you order: confirm fitment

  • Check the engine tag on your Scag machine: it should read CH740-3172 / PA-CH740-3172 or an older spec this engine replaces (CH740-0021).
  • Match crankshaft diameter and length, mounting pattern, PTO/clutch, fuel and wiring connections.
  • Not sure which engine your machine has? Call (646) 666-7225 with your machine model and serial number and we'll confirm the right spec.

Engine specifications

Manufacturer Kohler (now Rehlko)
Part number (MPN) CH740-3172
Rehlko spec number PA-CH740-3172
Series Command PRO
Gross power 27 HP
Displacement 725 cc
Cylinders V-twin, OHV
Crankshaft orientation Horizontal
Crankshaft 1-1/8" x 3-5/32"
Fuel system Carbureted gasoline
Air cleaner Heavy-Duty Air Cleaner
Oil cooler Yes
Starter Electric Start
Charging 15 Amp
Oil capacity 2.0 qt (1.9 L)
Shipping weight 145 lb
Condition New, genuine OEM
Fits Scag Turf Tiger STT61A-27CH

Frequently asked questions

What engine does the Scag Turf Tiger STT61A-27CH use?

This listing is the Kohler CH740-3172 spec (27 HP). Always confirm against the tag on your existing engine.

How much is shipping?

Engines ship palletized by LTL freight for a flat $200 to the lower 48 + DC. Expedited / Need It Fast ($235.95) is available at checkout.

Is this the same engine as Kohler CH740-3172?

Yes — this is the same new Kohler/Rehlko engine sold on our Kohler CH740-3172 page, listed here by machine for easy lookup.