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  1. J

    Engine Toro ZTR Engine Replacement Advice Wanted

    Hi. I have a eight year old Z500 with a 48 inch deck and the 16 HP Kawaski Single Cylinder engine. It's a good mower but greatly underpowered. Replacing the engine means purchasing an engine and exhaust. Has anyone replaced their stock engine with one with more horsepower? What do you recommend?
  2. J

    Engine DIY Engine Replacement - Toro ZTR

    I have a five year old Z400 with a 48" deck that is woefully underpowered with an 18HP Kohler. The Z400 is the estate mower - a step up from the home model and slightly down from the commercial Z500s. I would like a bigger engine and see that a 23 HP Kohler two cylinder can be had for less...
  3. J

    Toro ZTR Z400 - Bypassing the blade clutch during startup

    Hi. I have a 1996 Toro Z400 ZTR. Last year, I started having clutch problems and had the whole assembly replaced by the Toro dealer. This year, the clutch safety sensor is more often than not malfunctioning so that it won't dependably start. Does anyone know how to change the wiring to bypass...
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