Toro Z Master Dies Without Choke or Bogs Under Load? Full Diagnosis & Fix – Kohler Command Pro CV742

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Does your Toro Z Master zero turn mower die when you turn the choke off, run rough, bog down under load, or surge and pop?

In this full repair walkthrough, we diagnose and fix a Toro Z Master Commercial 3000 Series powered by a Kohler Command Pro CV742 V-Twin engine.

This mower came in with major performance issues: surging, popping, shutting down when removing the choke, running erratically, and losing power under load.

We cover the entire diagnostic and repair process step-by-step so you can solve similar issues on your own machine.

Symptoms Covered:

Mower pops, surges, or runs rough

No power under load

Dies when choke is disengaged

Won’t rev up properly

What’s Covered in This Video:

Fuel quality testing and inspection

How to properly drain fuel through lines

Fuel tank removal, flushing, and cleaning

Replacing tank grommets and vent lines

Carburetor removal, cleaning, gasket replacement & carburetor replacement

Fuel solenoid (anti-afterfire solenoid) testing (dual solenoids on this model)

Air filter housing removal and reinstall

Full reassembly with all proper checks / testing

How to diagnose spark, fuel flow, and air delivery issues

This video applies to any commercial mower with a Kohler Command Pro V-Twin engine, including many Toro Z Master, Cub Cadet, Exmark, and other pro-level zero turns.

If your engine is dying under load, running on choke only, or popping and surging—this repair guide will help you fix it fast.

This is done on a Toro Z Master Commercial mower model 74959 with 72" cut which is part of the 3000 series. It has a Kohler Command Pro v twin engine model CV742-3014

Parts Used:

24 853 276-S Carburetor https://ebay.us/vpW9aQ

Video equipment:

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Microphone:
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Don’t forget to like, comment, and subscribe for more lawn mower repair tips, troubleshooting guides, and DIY small engine fixes to keep your equipment working smoothly!

Save some money by doing it yourself!

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About Us:
My name is Martin. I have been repairing tools and small engines for almost 20 years. We operate a small engine repair shop in Illinois. We service / repair Briggs & Stratton, Kohler, Kawasaki, John Deere, Cub Cadet, Toro Tecumseh, Loncin, Honda, Craftsman, Husqvarna, MTD, Troy Bilt, Simplicity, John Deere, Exmark, LCT, Generac and many more brands. We work on riding mowers, walk behind mowers, snow blowers, zero turns, generators, pressure washers and much more. We normally repair about 3,000 pieces of equipment every year and look at many more that are beyond an affordable repair. Hopefully our videos will save you some money and give you the information you need to work on your own equipment or figure out the issue at hand.

Disclaimer: Links included in the description are affiliate links. As an Ebay & Amazon associate we earn from qualifying purchases. There will be no additional charge to you for purchasing here. We appreciate your support, which allows us to continue to provide original content!

Please be careful when repairing any piece of equipment and follow all possible safety measures. This video is for entertainment purposes only.


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