Quick Answer
The gasoline-powered Cub Cadet Ultima ZT1 46 46-inch zero-turn mower uses the 917-05209 electric PTO clutch and the 754P06135 deck drive belt when matched to the model and production paths shown below.
The blade and spindle system changed during production. The original deck path uses 942-04244A six-point-star blades with 918-05078A spindle assemblies. The current S-shaped blade path uses 742P05510 standard blades or 742P05510-X Xtreme blades with 618P09395 spindle assemblies.
This guide separates the original six-point-star deck path from the later S-shaped blade and spindle path.
Cub Cadet ZT1 46 PTO Clutch Table
Table tip: On mobile, swipe sideways to view the full fitment table.
| Model Name | Model Number | Production Path | Deck Size | OEM PTO Clutch | PTO Direct Product | Fitment Note |
|---|---|---|---|---|---|---|
| Cub Cadet Ultima ZT1 46 | 17AAEACN010 17RAEACN010 17AREACN010 17RREACN010 17RREACT010 |
Original Ultima ZT1 46 family | 46-inch fabricated deck | 917-05209 | 917-05209 PTO Clutch | Confirmed gasoline-powered PTO clutch path for the original ZT1 46 and ZT1-46 KH model families. |
| Cub Cadet Ultima ZT1 46 | 17TREACN010 17AREACNA10 |
Later pre-change model family | 46-inch fabricated deck | 917-05209 | 917-05209 PTO Clutch | Uses the same PTO clutch. Confirm the blade center-hole and spindle system before ordering deck parts. |
| Cub Cadet Ultima ZT1 46 | 17AIEACNA10 | Current parts-supplement family | 46-inch AeroForce fabricated deck | 917-05209 | 917-05209 PTO Clutch | Current model family using the S-shaped blade and 618P09395 spindle service path. |
Cub Cadet ZT1 46 46-Inch Deck Parts Table
Table tip: On mobile, swipe sideways to view the full deck parts table.
| Production Path | Component | Quantity | OEM Part Number Path | PTO Direct Product | Fitment Note |
|---|---|---|---|---|---|
| All confirmed ZT1 46 paths | Deck Drive Belt | 1 | 754-06135 / 754P06135 / 490-501-C082 | 754P06135 / 07241800 Deck Belt | Approximately 120.8 inches long and 1/2 inch wide. Transfers power from the PTO clutch through the 46-inch mower-deck pulley system. |
| Original six-point-star path | Premium High-Lift Blade | 2 | 742-04244 / 742-04244A / 942-04244 / 942-04244A | 742-04244 / 942-04244A Mower Blades | Uses two 23.25-inch blades with six-point-star center holes. |
| Original six-point-star path | Spindle Assembly | 2 | 618-05078 / 618-05078A / 918-05078 / 918-05078A | 918-05078A Spindle Assembly | Uses two spindle assemblies designed for the original six-point-star blade system. |
| Current S-shaped blade path | Standard High-Lift Blade | 2 | 742P05510 / 490-110-C192 / 490-110-F192 | Contact to inquire about product | Current standard 23.25-inch blade with the patented S-shaped center hole. |
| Current S-shaped blade path | Xtreme Blade Option | 2 | 742P05510-X / 490-110-C203 / 490-110-F203 | 742P05510-X Xtreme Mower Blades | Optional Xtreme 2-in-1 blade for the later S-shaped spindle system. |
| Current S-shaped blade path | Spindle Assembly | 2 | 618P09395 | Contact to inquire about product | Current spindle assembly for the S-shaped blade system. Do not substitute the earlier 918-05078A spindle. |
Model Path Note
The gasoline-powered Cub Cadet ZT1 46 uses the 917-05209 PTO clutch and 754P06135 deck drive belt across the confirmed model families shown above. The important production change is the blade-center and spindle-shaft system.
The original service path uses 942-04244A six-point-star blades with 918-05078A spindles. The later service path uses 742P05510 or 742P05510-X S-shaped blades with 618P09395 spindles.
The star-center blades and S-shaped blades are not interchangeable. The matching spindle assembly must use the same blade-mounting pattern.
Before Ordering
- Confirm your mower is a gasoline-powered Cub Cadet Ultima ZT1 46.
- Confirm the complete mower model number in the PTO clutch table above.
- Use the 917-05209 PTO clutch for the confirmed clutch path.
- Use the 754P06135 / 754-06135 deck drive belt for the 46-inch deck-belt path.
- Inspect the original blade center hole before ordering blades or spindle assemblies.
- Use 942-04244A replacement blades with 918-05078A spindles on the original six-point-star path.
- Use 742P05510 standard blades or 742P05510-X Xtreme blades with 618P09395 spindles on the current S-shaped path.
- Do not install an S-shaped blade on a six-point-star spindle shaft.
- Do not install a six-point-star blade on a 618P09395 S-shaped spindle shaft.
- Do not order blades or spindles using the ZT1 46 model name or deck width alone.
Common Symptoms
- Blades will not engage when the PTO switch is pulled
- PTO clutch clicks but the deck belt does not begin turning
- Blades engage cold, then slow down after mowing for 10 to 30 minutes
- Deck belt slips, squeals, or jumps off the pulley path
- Blade does not seat correctly against the spindle shaft
- Blade mounting pattern does not match the replacement spindle
- Rough spindle bearings, excessive deck vibration, or uneven cut quality
- Burning smell near the PTO clutch or deck belt
FAQ
What PTO clutch fits a Cub Cadet ZT1 46?
The confirmed gasoline-powered Cub Cadet Ultima ZT1 46 model families listed in this guide use the 917-05209 PTO clutch.
What does the 917-05209 PTO clutch replace?
The 917-05209 PTO clutch replaces the 717-05209 and 917-05209 clutch path on compatible Cub Cadet and MTD mower applications. It also cross-references Warner 5219-177.
What deck belt fits the Cub Cadet ZT1 46?
The confirmed Cub Cadet ZT1 46 deck path uses the 754P06135 deck drive belt. The belt path also includes 754-06135 and packaged replacement number 490-501-C082.
How long is the Cub Cadet ZT1 46 deck belt?
Cub Cadet specifies the 754P06135 belt at approximately 120.8 inches long and 1/2 inch wide.
Does the Cub Cadet ZT1 46 use separate PTO and deck belts?
The confirmed ZT1 46 mower-deck path uses one long 754P06135 deck drive belt that transfers power from the electric PTO clutch and routes through the mower-deck pulley system. The mower also uses a separate hydrostatic transmission belt, which should not be confused with the deck belt.
What blades fit the original Cub Cadet ZT1 46?
The original ZT1 46 parts-supplement path uses two 942-04244A high-lift mower blades. Each blade is approximately 23.25 inches long and uses a six-point-star center hole.
What blades fit the current Cub Cadet ZT1 46?
The current S-shaped deck path uses two 742P05510 standard blades. The 742P05510-X Xtreme blade is the matching Xtreme 2-in-1 option for the same S-shaped spindle system.
What spindle fits the original Cub Cadet ZT1 46?
The original six-point-star deck path uses the 918-05078A spindle assembly. The replacement path also includes 618-05078, 618-05078A, and 918-05078. Two spindle assemblies are used on the deck.
What spindle fits the current Cub Cadet ZT1 46?
The current S-shaped blade path uses 618P09395 spindle assemblies. Two spindle assemblies are required. Contact PTO Direct USA to inquire about this product.
Can I use 742P05510 blades with 918-05078A spindles?
No. The 742P05510 blade uses the later S-shaped center-hole system. The 918-05078A spindle uses the original six-point-star blade-mounting system.
Can I replace a 618P09395 spindle with a 918-05078A spindle?
No. The two spindle assemblies use different blade-shaft patterns. Use 918-05078A with six-point-star blades and 618P09395 with S-shaped blades.
Why does Cub Cadet list two different blade paths for the ZT1 46?
Cub Cadet changed the blade-center and spindle-shaft design during ZT1 46 production. Earlier service information lists 942-04244A blades and 918-05078A spindles, while the current parts supplement lists 742P05510 blades and 618P09395 spindles.
How can I tell which ZT1 46 blade path I have?
Remove or inspect one original blade and identify its center-hole shape. The original path has a six-point-star center hole. The current path has a wider, patented S-shaped center hole. Also compare the original blade and spindle part numbers before ordering.
Is there a full deck kit for the Cub Cadet ZT1 46?
The 918-05078A spindle listing includes package options with additional deck components for the original six-point-star path. There is not currently a complete PTO Direct USA deck kit for the later 742P05510 / 618P09395 S-shaped path.
Is this guide for the Cub Cadet ZT1 46E?
No. This guide covers gasoline-powered Cub Cadet ZT1 46 models using an electric PTO clutch. Battery-powered models use a different blade-drive system and do not use the 917-05209 gasoline-engine PTO clutch path.
Need help confirming fitment? Email PTO Direct USA with your complete mower model number and a clear photo of the original blade center hole before ordering.