By Graham FisherUpdated November 2026
When a no prime lawn mower won’t start, the cause is usually one of a handful of electrical or fuel-system parts, and the right replacement depends on your engine and deck. This list compares seven products that address common no-start situations on push, riding and walk-behind mowers. The selection criteria were specifications, brand reputation for compatibility, the type of failure each part is meant to fix, and patterns in owner feedback about fit and reliability. Nothing here was tested in a shop; the comparison is based on what manufacturers state and what owners commonly report.
Our top picks at a glance
- 1
TOP CHOICEBest overall5746N 16T Starter Motor for Direct Replacement for Briggs and Stratton StarterView on Amazon - 2
TOP CHOICEBest for Kohler twin-cylinder enginesKohler 7000 Series Starter for KT715 KT725 KT730 KT735 KT740 KT745View on Amazon - 3
TOP CHOICEBest for Poulan and Craftsman mowers4-Post Lawn Mower Starter Solenoid 12V for Poulan and CraftsmanView on Amazon - 4
Best for Husqvarna riding mowersStarter Motor Replacement for Husqvarna YTH2448T and YTH2348View on Amazon - 5
Best troubleshooting referenceLawn Mower Won't Start: A Diagnostic Guide for Push, Riding, and Zero-Turn MowersView on Amazon - 6
Best for Ariens walk-behind decksOEM-Style Ariens Starter Solenoid for 52" and 60" Walk-Behind DecksView on Amazon - 7
Best budget pick4 Pole Starter Solenoid 12V for Briggs Stratton, Cub Cadet and CraftsmanView on Amazon
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| 5746N 16T Starter Motor | Direct replacement on mixed brands | 12V starter with listed Briggs and Stratton cross-reference |
| Kohler 7000 Series Starter | Kohler twin-cylinder riding mowers | Part-number match for multiple Kohler Courage models |
| 4-Post Starter Solenoid 12V | Poulan, Craftsman and Husqvarna mowers | Multiple OEM number cross-references |
| Husqvarna Starter Motor | Husqvarna YTH riding mowers | Model-specific fit for YTH2448T and YTH2348 |
| Lawn Mower Won’t Start Guide | Diagnosing before buying parts | Step-by-step covering push, riding and zero-turn |
| Ariens Starter Solenoid | Ariens 52″ and 60″ walk-behind decks | OEM-style replacement for listed Ariens numbers |
| 4 Pole Starter Solenoid 12V | Budget solenoid swap across brands | Broad multi-brand fitment list |
5746N 16T Starter Motor for Direct Replacement for Briggs and Stratton Starter
5746N 16T Starter Motor for Direct Replacement for Briggs and Stratton Starter(393499/497401/494198) Fitting John Deere/Cub Cadet/Toro/Scotts mowers,12V high-Torque Power
Best for: Owners who need a direct-replacement starter across several mower brands
This suits someone whose mower cranks slowly or not at all and who has confirmed the starter motor, rather than the battery or solenoid, is the failing part. The listing names John Deere, Cub Cadet, Toro and Scotts mowers as fitments.
Key specs
- 12V starter motor
- 16-tooth pinion
- Cross-referenced to Briggs and Stratton part numbers 393499, 497401 and 494198
Pros
- Clear part-number cross-references make matching easier
- Covers several mower brands with one part
- Designed as a direct swap, so no wiring changes are typically needed
Cons
- Fitment depends on matching the original pinion and mounting pattern, so verify before ordering
- Owners sometimes report that the pinion tooth count must be checked against the flywheel ring gear
Bottom line: A strong choice if your no-crank symptom points to the starter and you want a single part that covers several brands.
Kohler 7000 Series Starter for KT715 KT725 KT730 KT735 KT740 KT745
Kohler 7000 Series Starter for KT715 KT725 KT730 KT735 KT740 KT745 Courage Twin SV710 SV715 SV720 SV730 SV735 SV740 SV810 820 830 840 20HP-27HP 3209801 3209803 3209804 3209808 Cub Cadet 1999-1140051
Best for: Owners of Kohler Courage twin-cylinder engines needing a starter
This is aimed at riding mower and garden tractor owners running Kohler Courage or related twin engines in the 20 to 27 horsepower range. Match your engine model before buying.
Key specs
- Designed for Kohler KT and SV series twin engines
- Listed for 20HP to 27HP applications
- Cross-referenced to Kohler 3209801, 3209803, 3209804 and 3209808
Pros
- Specific engine-model listing reduces guesswork
- Includes Cub Cadet cross-reference for Kohler-powered units
- Suited to heavier-duty twin-cylinder starting loads
Cons
- Long list of engine models means a mismatch is easy if you do not confirm your engine code
- Not a fit for single-cylinder push mowers
Bottom line: Best for owners who have confirmed a Kohler twin engine and need the correct starter for that exact family.
4-Post Lawn Mower Starter Solenoid 12V for Poulan and Craftsman
fits Poulan, Craftsman, Husqvrana, replaces 532145673, 532109081, 532109946, 178861, 892-1221-210, 894-1221-210, 4-Post Lawn Mower Starter Solenoid 12V 145673 146154 532146154
Best for: Owners who hear a click or nothing when turning the key and suspect the solenoid
Solenoid failures often show up as a single click with no cranking. This is a lower-cost first check than replacing a starter motor, and the listing covers Poulan, Craftsman and Husqvarna applications.
Key specs
- 12V four-post starter solenoid
- Lists replacement numbers 532145673, 532109081, 532109946, 532146154 and others
Pros
- Multiple OEM number cross-references
- Inexpensive diagnostic step before buying a starter
- Common swap that many owners can do with basic hand tools
Cons
- Solenoids are a frequent source of mismatched fitment, so compare terminal layout
- Does not fix a weak battery or a bad ground connection
Bottom line: A sensible first replacement for a click-only no-start on Poulan or Craftsman mowers.
Starter Motor Replacement for Husqvarna YTH2448T and YTH2348
Starter Motor Replacement for Husqvarna YTH2448T, YTH2348 Riding Mower
Best for: Husqvarna YTH riding mower owners with a specific model
This part is written for two named Husqvarna riding mower models. If your mower matches, it removes the guesswork of cross-referencing numbers.
Key specs
- Starter motor for Husqvarna YTH2448T and YTH2348
Pros
- Model-specific listing
- Straightforward choice when the model number matches
- Useful when a dealer part is hard to source
Cons
- Narrow fitment; owners of other Husqvarna models should look elsewhere
- Limited specification detail in the listing itself
Bottom line: Pick this if your Husqvarna YTH model is one of the two listed and the starter is the confirmed fault.
Lawn Mower Won’t Start: A Diagnostic Guide for Push, Riding, and Zero-Turn Mowers
Lawn Mower Won't Start: A Diagnostic Guide for Push, Riding, and Zero-Turn Mowers (Engine Won't Start Series)
Best for: Owners who want a structured troubleshooting reference before buying parts
A reference book is useful when you cannot tell whether the fault is fuel, spark, electrical or compression. It suits readers who prefer to diagnose systematically rather than guess.
Key specs
- Covers push, riding and zero-turn mowers
- Part of an engine-won’t-start series
Pros
- Organizes causes by symptom
- Helpful for avoiding unnecessary parts purchases
- Covers several mower types in one place
Cons
- Not a repair part, so it adds time before the fix
- Specific engine models may need supplemental manufacturer manuals
Bottom line: Good for anyone who wants to narrow the cause first, especially if the symptom is unclear.
OEM-Style Ariens Starter Solenoid for 52″ and 60″ Walk-Behind Decks
OEM replacement, replaces Ariens 21546294 35510 3551000 45071, for 52" and 60" turf tracer floating deck walk-behind serial n Stens 435-435 Starter Solenoid
Best for: Ariens walk-behind owners replacing a solenoid on a specific deck size
The listing cross-references several Ariens numbers and targets 52-inch and 60-inch turf tracer floating deck walk-behinds. Confirm your serial number first.
Key specs
- Replaces Ariens 21546294, 35510, 3551000 and 45071
- Listed for 52-inch and 60-inch floating deck walk-behinds
- Cross-referenced to Stens 435-435
Pros
- Clear OEM number cross-reference
- Targeted to a specific deck and mower family
- Common solenoid failure point addressed directly
Cons
- Narrow to Ariens walk-behinds; not for other brands
- Owners sometimes report that wiring connector styles vary between production years
Bottom line: A reasonable fit for Ariens walk-behind owners whose solenoid is the confirmed failure.
4 Pole Starter Solenoid 12V for Briggs Stratton, Cub Cadet and Craftsman
Fits Briggs & Stratton, Cub Cadet, Craftsman, Honda, Husqvarna, John Deer, MTD, Toro Lawn Mower 4 Pole Starter Solenoid 12V for Briggs Stratton Cub Cadet Craftsman 146154
Best for: Budget-minded owners with a mixed-brand fleet who need a solenoid swap
This multi-brand solenoid covers a broad list of makes, which makes it practical if you maintain more than one mower.
Key specs
- 12V four-pole starter solenoid
- Lists Briggs and Stratton, Cub Cadet, Craftsman, Honda, Husqvarna, John Deere, MTD and Toro
- Cross-referenced to 146154
Pros
- Broad multi-brand fitment
- Useful as a single spare for several machines
- Simple electrical swap for a click-only symptom
Cons
- Broad fitment lists can hide model-specific differences
- Solenoid is one of several possible causes; confirm battery and ground first
Bottom line: A practical budget choice if you want one solenoid to keep on hand for several brands.
Buying Guide
Identify the failing part before you buy
A single click usually points to the solenoid or battery. Slow cranking often points to the battery or starter motor. No sound at all can mean a dead battery, blown fuse, bad ignition switch or disconnected safety interlock. Test battery voltage with a multimeter: a healthy 12V battery should read about 12.6 volts at rest and should not drop below roughly 10 volts while cranking.
Good picks for this: 4-Post Lawn Mower Starter Solenoid 12V; 4 Pole Starter Solenoid 12V
Check your engine brand and model number
Engine family matters more than mower brand. Kohler, Briggs and Stratton, and Honda engines use different starter and solenoid designs even on similar mowers. Write down the engine model code stamped on the blower housing or valve cover before ordering.
Good picks for this: Kohler 7000 Series Starter; 5746N 16T Starter Motor
Match the starter’s pinion and mounting pattern
A starter with the wrong pinion tooth count will not engage the flywheel ring gear correctly. Compare the mounting bolt pattern and electrical terminal layout against the old part. Many owners find the cross-referenced part numbers easier to verify than the photos alone.
Good picks for this: 5746N 16T Starter Motor; Starter Motor Replacement for Husqvarna YTH2448T
Choose a model-specific part when possible
Model-specific listings reduce the risk of a mismatch, especially for riding mowers where the starter, solenoid and wiring harness vary by year. If your model is named in a listing, that is usually the safer option than a broad cross-reference.
Good picks for this: Starter Motor Replacement for Husqvarna YTH2448T; OEM-Style Ariens Starter Solenoid
Consider how you will use the mower
A walk-behind used on a small lawn has different starting demands than a riding mower on several acres. Heavier twin-cylinder engines place more load on the starter, so a heavier-duty part may be a better match for frequent use.
Good picks for this: Kohler 7000 Series Starter; Lawn Mower Won’t Start Diagnostic Guide
Look at durability and wiring quality
Corroded terminals and cracked insulation cause many repeat failures. Replace any damaged cable ends when you swap a starter or solenoid, and clean battery terminals with a wire brush. Owners often report that a new part fails early when the old wiring is left in poor condition.
Good picks for this: 4 Pole Starter Solenoid 12V; 4-Post Lawn Mower Starter Solenoid 12V
Plan for ongoing care
Keep the battery charged during storage, use fresh fuel with stabilizer, and disconnect the battery over long winters. These habits reduce the chance of a repeat no-start. For a broader checklist, see Troubleshooting a Lawn Mower That Won't Start: 8 Steps to Fix It.
Good picks for this: Lawn Mower Won’t Start: A Diagnostic Guide; 5746N 16T Starter Motor
FAQ
Why does my mower click but not start?
A single click usually means the solenoid is receiving current but the starter motor is not turning. The most common causes are a weak battery, a corroded connection, or a failed solenoid. Check battery voltage first; if it stays near 12 volts under load, the solenoid or starter is the more likely fault.
Can a bad spark plug prevent starting without a prime problem?
Yes. A fouled or worn spark plug can make an engine hard to start even when the starter works. Remove the plug, check its condition, and test for spark if you have the tools. A plug that is wet with fuel may point to a flooding issue rather than a starter fault.
Do I need to prime the engine to start it?
Many engines use a primer bulb or choke to deliver extra fuel for a cold start. If the engine has a primer, use it according to the manufacturer’s instructions. Over-priming can flood the engine, so pump a few times and try cranking.
Is it safe to jump-start a riding mower?
Jump-starting is possible but carries risk of sparks near the battery and damage to electrical components. Disconnect the negative terminal before working on the electrical system, and follow the manufacturer’s jump-start procedure. If you are unsure, consult a qualified small-engine repair technician.
How do I know if the starter motor or the solenoid is bad?
A starter motor that is failing may crank slowly or make a grinding noise. A failed solenoid typically produces a click with no cranking. Bypassing the solenoid with a jumper to the starter terminals can help isolate which component is at fault, but this should be done carefully and only by someone familiar with the wiring.
Should I replace the battery before buying a starter?
Often yes. A weak battery produces symptoms that look like a starter problem, and many no-start calls end with a new battery. Load-test the battery or have it checked at an auto parts store before spending money on electrical parts.
When should I take the mower to a professional?
If you have checked the battery, fuses, connections and fuel and the mower still will not start, or if you see smoke, burning smells or damaged wiring, stop and consult a qualified small-engine technician.
Conclusion
When a no prime lawn mower won’t start, the fastest path to a fix is to identify whether the battery, solenoid, starter or engine is at fault, then choose a part that matches your exact model. The 5746N 16T Starter Motor and Kohler 7000 Series Starter suit owners who have confirmed a starter failure on a supported brand. The 4-Post and 4 Pole solenoids are sensible first replacements for click-only symptoms. The Husqvarna and Ariens parts fit owners of those specific models, and the diagnostic guide helps anyone who wants to confirm the cause before buying. For related model-specific fixes, see Riding Lawn Mower Won't Start No Clicking: 7 Causes and Fixes and Yard Machine Riding Lawn Mower Won't Start: 7 Causes and Fixes.
Sources
- Safety guidance for working with powered lawn equipment and handling batteries and fuel (cpsc.gov)
- Background on battery charging, storage and voltage behavior in lead-acid systems (energy.gov)
Related reading
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.
