By Graham FisherUpdated November 2026
A zero turn lawn mower won’t start more often than most owners expect, and the cause is frequently a worn starter solenoid, a failing ignition switch, or a tired connection on the starter circuit. If you’re shopping for a replacement part, the right choice depends on your mower brand, the terminal count on the existing solenoid, and whether your mower uses a 12-volt electric start. The seven options below were compared on fit information stated in each listing, specifications, brand reputation, and the kinds of feedback owners commonly report about durability and installation.
Our top picks at a glance
- 1
TOP CHOICEBest overall725-06153A Starter Solenoid for Cub Cadet XT1 XT2 Enduro RZT LT1 ZT1 ZView on Amazon - 2
TOP CHOICEBest for multi-brand owners925-04228 Ignition Switch 5 Terminal with 2 Keys & 108-5349-00 StarterView on Amazon - 3
TOP CHOICEBest for Toro and Exmark fleetsTurn Lawn Mower Starter Solenoid 4 Terminal 12V Fit for Toro Exmark Timecutter ZeroView on Amazon - 4
Best for Kohler-powered mowersKohler Starter 7000 Series Mowers for KT715 KT725 KT730 KT735 KT740 KTView on Amazon - 5
Best budget pickHipa 12V Starter Solenoid 725-06153A for Cub Cadet XT1 XT2 ZT1 Lawn MowerView on Amazon - 6
Best for Exmark ignition repairsIgnition Switch and 117-1197 Starter Solenoid for Exmark Zero Turn Mower Models and ToroView on Amazon - 7
Best for Husqvarna zero turnsHusqvarna Starter Solenoid for Riding and Zero Turn Mowers 539101714View on Amazon
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| 725-06153A Starter Solenoid (Cub Cadet, MTD, Troy-Bilt and others) | Broad compatibility across common zero turn brands | Listed fit across many XT, ZT and LT models |
| 925-04228 Ignition Switch and 108-5349-00 Starter Solenoid Kit | Owners who need both parts replaced together | Five-terminal ignition switch with two keys |
| 4-Terminal Starter Solenoid (Toro Exmark Timecutter) | Toro and Exmark zero turns with many replacement part numbers listed | Lists numerous original part numbers for cross-reference |
| Kohler 7000 Series Starter | Kohler twin-cylinder and Courage engines | Engine-specific fit for 12V Kohler starters |
| Hipa 12V Starter Solenoid 725-06153A | Budget-minded replacement with broad fit | Bolt-on design with corrosion-resistant finish |
| Ignition Switch and 117-1197 Starter Solenoid (Toro) | Exmark and Toro ignition troubleshooting | Matched ignition switch and solenoid pair |
| Husqvarna Starter Solenoid 539101714 | Husqvarna Z, CZ, EZ and RZ zero turns | Brand-specific OEM-numbered solenoid |
725-06153A Starter Solenoid for Cub Cadet XT1 XT2 Enduro RZT LT1 ZT1 ZT2 MTD Troy Bilt Yard Man Husky Yard Machines Craftsman Zero Turn Riding Lawn Mower Tractor 762-1261-211-50
725-06153A Starter Solenoid for Cub Cadet XT1 XT2 Enduro RZT LT1 ZT1 ZT2 MTD Troy Bilt Yard Man Husky Yard Machines Craftsman Zero Turn Riding Lawn Mower Tractor 762-1261-211-50
Best for: Owners who want one solenoid that covers a long list of zero turn and riding mower brands.
This is a good starting point if you are not certain which original part number your mower uses. Its listing name cross-references a wide range of Cub Cadet, MTD, Troy-Bilt and related models, which makes it practical for owners working from a part number printed on an old solenoid.
Key specs
- Part number 725-06153A
- Listed cross-reference 762-1261-211-50
- Designed for 12-volt zero turn and riding mower starting circuits
Pros
- Wide cross-reference list across several brands
- Straightforward replacement of a single component
- Commonly chosen when the original solenoid is unreadable
Cons
- Broad compatibility lists mean you still need to confirm your exact model
- Owners sometimes report that terminal layout needs a quick check before installing
Bottom line: Pick this if you want a single cross-brand solenoid and are comfortable matching your mower’s part number before buying.
925-04228 Ignition Switch 5 Terminal with 2 Keys and 108-5349-00 Starter Solenoid 12V Replacement Kit for Riding Lawn Mower and Bad Boy Zero Turn Mower
925-04228 Ignition Switch 5 Terminal with 2 Keys & 108-5349-00 Starter Solenoid 12V Replacement Kit for Riding Lawn Mower & Bad Boy Zero Turn Mower, Replaces 725-04659 077-8076-00
Best for: Owners whose ignition switch and starter solenoid are both suspect.
When a mower clicks, cranks weakly, or does nothing at the key, the ignition switch and solenoid are often the two parts in question. This kit addresses both in one purchase, which can save a return trip to the parts counter if you are unsure which one has failed.
Key specs
- Five-terminal ignition switch
- Two keys included
- 12-volt starter solenoid (108-5349-00)
Pros
- Covers both ignition switch and solenoid in one kit
- Includes two keys
- Useful for cross-referencing older part numbers
Cons
- Installing an ignition switch takes more wiring care than a bolt-on solenoid
- Owners should verify the terminal diagram against their existing switch
Bottom line: A sensible choice when the key switch and solenoid both need attention and you want one order.
Turn Lawn Mower Starter Solenoid 4 Terminal 12V Fit for Toro Exmark Timecutter Zero
Turn Lawn Mower Starter Solenoid 4 Terminal 12V Replace# z4200 ss4225 ss4235 ss5000 435-103 784-1221-210 104-3189 47-1910 117-1197 Starter Solenoid Fit for Toro Exmark Timecutter Zero
Best for: Toro and Exmark zero turn owners who have a four-terminal solenoid.
Toro and Exmark mowers are among the most common zero turns in the field, and the listing cross-references a long series of original numbers, including 104-3189, 117-1197 and 784-1221-210. That makes it easier to match an old part by number.
Key specs
- 4-terminal design
- 12-volt
- Cross-reference numbers including 117-1197 and 104-3189
Pros
- Extensive original part number cross-reference
- Four-terminal layout matches many Toro and Exmark starting circuits
- Bolt-on replacement
Cons
- Terminal layout must be confirmed against the existing solenoid
- Not suitable for mowers using a different terminal count
Bottom line: Best suited to Toro Timecutter and Exmark owners who can read the old solenoid’s part number and terminal count.
Kohler Starter 7000 Series Mowers for KT715 KT725 KT730 KT735 KT740 KT745 Courage Twin SV710 SV715 SV720 SV730 SV735 SV740 SV810 SV820 SV830 SV840 12V 20-27 HP
Kohler Starter 7000 Series Mowers for KT715 KT725 KT730 KT735 KT740 KT745 Courage Twin SV710 SV715 SV720 SV730 SV735 SV740 SV810 SV820 SV830 SV840 3209801 3209803 3209804 3209808 12V 20-27 HP
Best for: Mowers powered by Kohler twin-cylinder engines in the 20 to 27 HP range.
If the engine is a Kohler and the starter itself has failed, a starter matched to the engine series is the correct part. Listed engine families include the Courage Twin and several SV models.
Key specs
- 12-volt starter
- Listed for Kohler KT and SV series engines in the 20 to 27 HP range
Pros
- Engine-specific fit for common Kohler twins
- Long list of model and part numbers for matching
- Addresses the starter motor rather than the solenoid
Cons
- Starter replacement is more labor than a solenoid swap
- Only relevant if the starter motor, not the solenoid, is the problem
Bottom line: The right pick for Kohler-powered owners whose diagnosis points to the starter motor itself.
Hipa 12V Starter Solenoid 725-06153A for Cub Cadet XT1 XT2 ZT1 Lawn Mower
fits XT1-LT42, LT46, LT50, LT54, XT2-LX42, XT2-LX46, ZT1-42, ZT1-50, ZT1-54, ZT2, 4-Post, easy bolt-on, corrosion resistan Hipa 12V Starter Solenoid 725-06153A for Cub Cadte XT1 XT2 ZT1 Lawn Mower
Best for: Budget-minded owners of Cub Cadet XT and ZT models.
This listing names specific XT1, XT2 and ZT1 model families and describes an easy bolt-on installation. It is a practical choice when you know your model and want a straightforward replacement without paying for extra features.
Key specs
- 12-volt starter solenoid
- Part number 725-06153A
- Listed for XT1, XT2, ZT1 and related Cub Cadet models
Pros
- Clear model-specific fit listing
- Bolt-on design
- Corrosion-resistant finish noted in the listing
Cons
- Fit is strongest for the Cub Cadet models named, so owners of other brands should look elsewhere
- Owners often report that quality can vary between solenoid batches, so testing the part before the mower is reassembled is worthwhile
Bottom line: A budget-friendly swap for Cub Cadet XT and ZT owners who have already confirmed their model.
Ignition Switch and 117-1197 Starter Solenoid for Exmark Zero Turn Mower Models and Toro
for Exmark zero turn mower models TimeCutter Series Titan Series Z Master Series 137-4100 1-513075 E513075 117-2221 Ignition Switch and 117-1197 Starter Solenoid for Toro
Best for: Exmark and Toro owners whose ignition switch and solenoid both show wear.
Exmark TimeCutter, Titan and Z Master series mowers use ignition switches and solenoids that wear over time. This pairing lists both the switch and the 117-1197 solenoid, so it addresses the two most common electrical starting faults in one order.
Key specs
- Ignition switch listed as 137-4100 and 1-513075 / E513075
- Starter solenoid 117-1197
- Designed for Exmark and Toro zero turn models
Pros
- Covers both ignition and solenoid components
- Multiple cross-reference numbers listed
- Targets a common Exmark and Toro failure pattern
Cons
- Ignition switch wiring takes care and a wiring diagram
- Part numbers must be matched carefully to the specific series
Bottom line: Suitable for Exmark and Toro owners who want to replace the ignition switch and solenoid together.
Husqvarna Starter Solenoid for Riding and Zero Turn Mowers 539101714
Husqvarna Starter Solenoid for Riding & Zero Turn Mowers Fits Z, CZ, EZ, RZ, MZ, PZ, WH, iZ, WHF, ZTH, ZTHKW / 539101714
Best for: Husqvarna zero turn owners replacing a starter solenoid with a brand-matched part.
Husqvarna’s zero turn lineup uses several model prefixes, and this solenoid is listed for the Z, CZ, EZ, RZ, MZ, PZ, WH, iZ and related series. It is the most brand-specific choice in this group.
Key specs
- Part number 539101714
- Listed for Husqvarna Z, CZ, EZ, RZ, MZ, PZ, WH, iZ, WHF and ZTH series
- 12-volt starter solenoid
Pros
- Brand-specific fit across many model prefixes
- Original part number makes cross-checking straightforward
- Reduces guesswork for Husqvarna owners
Cons
- Limited use outside Husqvarna mowers
- Typically chosen at a higher price point than generic alternatives
Bottom line: The safest pick for a Husqvarna zero turn when you want the part number to match the original.
Buying Guide
Confirm the solenoid’s terminal count
Most zero turn starter solenoids are either two-terminal or four-terminal designs. Count the studs before ordering, and match the diagram in the listing. A mismatch often causes a click with no crank, or a crank that never engages.
Good picks for this: 4-Terminal Starter Solenoid (Toro Exmark Timecutter), 725-06153A Starter Solenoid
Check whether the solenoid or the starter motor has failed
A solenoid that clicks but does not crank the engine is a common finding. A starter that spins without turning the engine points to the starter motor. Testing voltage at the battery and at the solenoid terminals while someone turns the key will narrow it down.
Good picks for this: Kohler 7000 Series Starter, Hipa 12V Starter Solenoid 725-06153A
Match the ignition switch and solenoid together
When a mower has a worn key switch, a new solenoid alone may not fix the problem. Ignition switches can fail in the same electrical path, so replacing both at once is often the more reliable repair.
Good picks for this: 925-04228 Ignition Switch and Starter Solenoid Kit, Ignition Switch and 117-1197 Starter Solenoid
Verify the brand and model before buying
Zero turn mowers share components across brands, but the fit can still differ by model year and series. Use the model and serial number, plus the part number printed on the old solenoid, to confirm compatibility.
Good picks for this: Husqvarna Starter Solenoid 539101714, 725-06153A Starter Solenoid
Consider the engine type
Twin-cylinder Kohler engines use different starter hardware than many single-cylinder engines. Know your engine family before shopping for a starter motor.
Good picks for this: Kohler 7000 Series Starter
Think about battery and cable condition
Weak batteries and corroded cables produce the same symptoms as a bad solenoid. Clean the terminals and check battery voltage before replacing electrical parts. A fully charged 12-volt battery should read near 12.6 volts at rest, according to general automotive and power equipment guidance.
Good picks for this: Hipa 12V Starter Solenoid 725-06153A
Plan for durability and installation
Solenoids that are bolt-on and corrosion-resistant are easier to install and tend to hold up in damp mowing conditions. Owners often report that tightening the terminal nuts to the torque in the service manual prevents loose connections that mimic a bad part.
Good picks for this: Husqvarna Starter Solenoid 539101714, Ignition Switch and 117-1197 Starter Solenoid
FAQ
Why does my zero turn click but not start?
A click usually means the solenoid is receiving power and trying to engage, but the contacts inside are worn or the battery voltage drops under load. Test the battery first, then check the solenoid’s terminal connections and contacts.
Can I replace the solenoid myself?
Most owners with basic hand tools can replace a bolt-on solenoid. Disconnect the battery first, label each wire, and follow the service manual’s torque specs. If you are uncomfortable with high-current electrical work, a small engine shop can do the job.
Is a starter solenoid the same as an ignition switch?
No. The ignition switch is the key-operated control, while the solenoid is a high-current relay that sends power from the battery to the starter motor. Both can fail, and the symptoms overlap.
How do I know which part number I need?
Read the number printed on the old solenoid or switch, then compare it against the cross-reference list in the product listing. Your mower’s model and serial number can also be used to confirm the correct part.
Should I replace the battery before buying a solenoid?
Yes, it is a good idea. A weak battery can cause clicking and no crank, which looks like a failed solenoid. Check voltage and cable connections before ordering parts.
What if the mower cranks slowly?
Slow cranking often points to a weak battery, corroded cables, or a starter motor drawing too much current. The starter motor itself may need replacing rather than the solenoid.
Can a bad fuse stop the starter?
Yes. Some mowers use fuses or safety interlocks in the starting circuit. Check these before replacing electrical parts. For related troubleshooting, see Troubleshooting a Lawn Mower That Won't Start: 8 Steps to Fix It and Toro Lawn Mower Won't Start After Sitting: 7 Causes and Fixes.
When should I call a professional?
If you smell burning, see melted insulation, or are unsure about high-current wiring, consult a qualified small engine technician. Battery work involves risk of shorts and sparks, so proceed carefully.
Conclusion
When a zero turn lawn mower won’t start, the fix is usually a solenoid, ignition switch, or battery connection, and the best replacement depends on your brand and what has actually failed. Owners of Cub Cadet and MTD models will find the 725-06153A useful. Toro and Exmark owners with a four-terminal solenoid should look at the Toro Exmark Timecutter option or the Exmark ignition pairing. Husqvarna owners get the most brand-specific match with the 539101714. Kohler-powered mowers need the Kohler 7000 Series starter only if the starter motor itself is faulty. The 925-04228 kit suits owners who want to replace both the ignition switch and solenoid together. Confirm your part number, test the battery, and match the terminal count before you order.
Sources
- Battery safety and maintenance basics for 12-volt systems (energy.gov)
- Consumer safety guidance on working with electrical equipment and small engines (cpsc.gov)
- Workplace guidance on electrical safety and lockout practices (osha.gov)
Related reading
- 6 Best Toro Zero Turn Lawn Mower Won't Starts (2026): Our Picks
- Riding Lawn Mower Won't Start But Turns Over: 4 Best Parts Compared (2026)
About Graham Fisher
Graham Fisher is part of our editorial team and reviews and edits our lawn mowers guides, checking product details against manufacturer specifications and owner feedback.
