By Graham FisherUpdated November 2026
If your Murray E450 lawn mower won’t start, the problem is often a worn or broken part in the starting system, such as the recoil starter, the ignition switch or a starter solenoid. This guide compares six replacement parts sold on Amazon US that match the starting components on this mower class. Each pick is judged on how well it matches the stated model fit, the component type, the included hardware and the feedback patterns owners commonly describe. Use the list to match a part to your symptom before you buy.
Our top picks at a glance
- 1
TOP CHOICEBest overallRecoil Starter Assembly for Murray M21450 Model 961140032View on Amazon - 2
TOP CHOICEBest for direct fit on a 21-inch E450Pull Start Recoil Starter for Murray E450 21" 125ccView on Amazon - 3
TOP CHOICEBest for electric start problemsStarter Solenoid for Murray 7701100MAView on Amazon - 4
Best budget pickReplace Part Pull Start Recoil Starter for Murray E450 21" 125ccView on Amazon - 5
Best for ignition switch replacementIgnition Starter Switch with Keys for Murray 92377MAView on Amazon - 6
Best for riding mower-style switchesIgnition Starter Switch for Murray MTD Cub Cadet style tractorsView on Amazon
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| Recoil Starter Assembly for Murray M21450 Model 961140032 | Owners replacing a whole recoil assembly | Listed for Murray model 961140032 |
| Pull Start Recoil Starter for Murray E450 21″ 125cc | Direct fit on a 21-inch E450 | Named specifically for the E450 and 125cc engine |
| Starter Solenoid for Murray 7701100MA | Electric start that clicks but won’t crank | Solenoid with multiple compatible cross-references |
| Replace Part Pull Start Recoil Starter for Murray E450 21″ 125cc | Budget-minded owners with a broken pull cord | Same E450 and 125cc listing, simpler replacement |
| Ignition Starter Switch with Keys for Murray 92377MA | Key switch that is dead or intermittent | Six-terminal switch with keys included |
| Ignition Starter Switch for Murray MTD Cub Cadet style tractors | Owners with a tractor-style switch or cross-referenced part number | Broad cross-reference list across major brands |
Recoil Starter Assembly for Murray M21450 Model 961140032
Recoil Starter Assembly for Murray M21450 Model 961140032 Lawn Mower
Best for: Owners replacing a complete recoil assembly when the rope, pawl or spring has failed.
This suits anyone who pulls the cord and feels no engagement, or hears a grinding sound without the engine turning over. Because it is a full assembly rather than loose parts, it avoids spring-tension work.
Key specs:
- Recoil starter assembly designed for Murray model 961140032
- Sold as a complete unit for pull-start replacement
Pros:
- Complete assembly reduces the need to rebuild the spring and pawls
- Straightforward swap on compatible Murray housings
- Clear model reference on the listing makes fit checking easier
Cons:
- Fit depends on matching the exact Murray model number
- Installation requires removing the old starter housing
Bottom line: A good first choice for owners who have confirmed the 961140032 model number and want a full replacement rather than a repair.
Pull Start Recoil Starter for Murray E450 21″ 125cc
#US Starter Parts Pull Start Recoil Starter for Murray E450 Lawn Mower 21" 125cc – (diepparts#131026.09853)
Best for: Direct fit on a 21-inch Murray E450 with a 125cc engine.
This is the most specific match for the mower in the keyword. If your engine plate and deck size match the listing, the fit question is largely settled.
Key specs:
- Pull-start recoil starter for Murray E450
- Listed for a 21-inch deck and 125cc engine
Pros:
- Named directly for the E450, reducing guesswork
- Covers the common pull-start failure of a broken rope or pawl
- Works as a like-for-like replacement for the original part
Cons:
- Seller-listed part numbers can vary, so compare the old starter first
- Requires basic tools and care when reinstalling the spring
Bottom line: The best fit for an E450 owner who wants a direct, model-specific recoil replacement.
Starter Solenoid for Murray 7701100MA
24285 424285 Toro 111674 6120-430-0500 53490009 Husqvarna 539101714 MTD 725-0530 725-0771 925-0771 Trombetta John Deere BlueStars 435-097 Starter Solenoid – For Murray 7701100MA 1002004MA
Best for: Electric start mowers that click or do nothing when the key or button is pressed.
A clicking sound with a healthy battery often points to the solenoid rather than the starter motor. This part is designed for that role and lists several cross-reference numbers.
Key specs:
- Starter solenoid for Murray 7701100MA and 1002004MA
- Cross-referenced to several major brand part numbers
Pros:
- Targets a common electric-start failure
- Multiple cross-references help with identification
- Relatively simple to test and swap
Cons:
- Only relevant if the mower has an electric start system
- Owners should confirm the battery and cables first
Bottom line: Pick this if your electric start clicks but the engine does not crank, after checking the battery.
Replace Part Pull Start Recoil Starter for Murray E450 21″ 125cc
#US Replace Part Pull Start Recoil Starter for Murray E450 Lawn Mower 21" 125cc (nvduq2803-12703)
Best for: Budget-minded owners with a broken pull cord or worn pawl.
This listing matches the E450 and 125cc specification of the top direct-fit option and is aimed at owners who want a straightforward replacement.
Key specs:
- Pull-start recoil starter for Murray E450
- Listed for a 21-inch deck and 125cc engine
Pros:
- Clear E450 and 125cc compatibility listing
- Good option when replacing a single worn component
- Simple one-part swap
Cons:
- Fit should still be verified against the original starter
- Owners sometimes report needing to reuse the original mounting hardware
Bottom line: A sensible alternative for owners who want the E450-specific recoil fit with a simpler replacement path.
Ignition Starter Switch with Keys for Murray 92377MA
92377, 91846 Ignition Starter Switch with Keys Fits Murray 92377MA, 092377MA Lawn Mowers, Compatible w Briggs & Stratton 5411,5411H,5412K Oregon 33-392, Stens 430-161, 4 Position 6 Terminals
Best for: Key switches that are dead, intermittent or fail to engage the start circuit.
If the key turns but the mower gives no start response, the ignition switch is a likely suspect. This replacement includes keys, which saves a separate purchase.
Key specs:
- Ignition starter switch with keys
- Six-terminal design, cross-referenced to several engine brands
Pros:
- Includes keys, reducing extra parts to buy
- Cross-reference list helps identify the right switch
- Targets a common no-start symptom
Cons:
- Wiring must match the six-terminal layout exactly
- Not useful if the problem is the recoil or solenoid
Bottom line: Best for owners whose key switch is the failing component, after checking the wiring diagram.
Ignition Starter Switch for Murray MTD Cub Cadet style tractors
Husqvarna Murray MTD Cub Cadet AYP Poulan Riding Lawn Tractor Mower 430-674 140301 532140301 574455401 092556 092556MA BlueStars 725-1717 925-1717 Ignition Starter Switch – For Craftsman
Best for: Owners with a tractor-style switch or a cross-referenced part number from another brand.
This switch has a wide list of cross-references, which can help when the original Murray number is hard to read.
Key specs:
- Ignition starter switch with a broad cross-reference list
- Covers multiple brand and model numbers
Pros:
- Extensive cross-reference list aids identification
- Useful when the original part number is worn off
- Covers multiple brands
Cons:
- Cross-references are not always exact, so verify before ordering
- Not designed as a direct E450 match
Bottom line: Choose this only after confirming the cross-reference number matches your original switch.
Buying Guide
Confirm the starting system type
Check whether your E450 uses a pull cord or electric start. A pull-start mower needs a recoil starter, while an electric start model uses a battery, solenoid, and ignition switch. Mixing these up wastes time and money.
Good picks for this: Recoil Starter Assembly for Murray M21450, Starter Solenoid for Murray 7701100MA
Match the model and engine specifications
Look at the engine plate and deck size. The E450 is commonly listed with a 21-inch deck and 125cc engine. Compare these to the listing before ordering.
Good picks for this: Pull Start Recoil Starter for Murray E450 21″ 125cc, Replace Part Pull Start Recoil Starter for Murray E450
Check cross-reference numbers
Many replacement parts list multiple part numbers. Compare the number printed on your original part against the listing. Cross-references are helpful but not always exact.
Good picks for this: Ignition Starter Switch for Murray MTD Cub Cadet style tractors, Starter Solenoid for Murray 7701100MA
Inspect the ignition switch terminals
A six-terminal switch must match the wiring harness. Take a photo of the original connections before removing the old switch so you can reconnect them correctly.
Good picks for this: Ignition Starter Switch with Keys for Murray 92377MA
Consider durability and spring tension
Recoil starters store energy in a spring under tension. Full assemblies avoid handling that spring directly, which many owners find safer and less frustrating than rebuilding a loose starter.
Good picks for this: Recoil Starter Assembly for Murray M21450, Pull Start Recoil Starter for Murray E450 21″ 125cc
Weigh the repair versus replacement decision
If the mower is older and other components are worn, replacing a single part may not solve the problem. Compare the cost of parts against the mower’s overall condition before deciding.
Good picks for this: Replace Part Pull Start Recoil Starter for Murray E450 21″ 125cc
Use the right troubleshooting order
Start with simple checks: fuel, spark plug, battery, and safety switches. Only replace a starting component after you have confirmed the failure symptom points to it.
Good picks for this: Starter Solenoid for Murray 7701100MA, Ignition Starter Switch with Keys for Murray 92377MA
FAQ
Why won’t my Murray E450 start even though the engine turns over?
If the engine cranks but does not fire, the problem is usually fuel, spark or compression rather than the starter. Check the spark plug, fuel supply and air filter first.
How do I know if the recoil starter is broken?
If the rope pulls freely with no resistance, the pawls or spring may be failing. If the rope snaps or will not retract, the recoil assembly likely needs replacement.
What does a clicking sound mean on an electric start E450?
A single click often indicates a weak battery or a failing solenoid. Test the battery voltage first, then inspect the solenoid and connections.
Can I use a tractor ignition switch on a walk-behind mower?
Only if the terminal layout and part number match. Cross-referenced switches are not always identical, so confirm the wiring before installing.
Do I need to disconnect the spark plug before repairs?
Yes. Disconnect the spark plug wire before working near the blade or starter to prevent accidental starting. Consult the owner’s manual for the correct procedure.
When should I take the mower to a professional?
If you are uncomfortable handling recoil spring tension, working on wiring, or if the problem persists after basic repairs, consult a qualified small-engine technician.
Conclusion
For a Murray E450 that won’t start, begin by identifying whether the fault is in the recoil starter, the ignition switch, or the solenoid. The E450-specific recoil starters suit pull-start owners, while the solenoid and switch options fit electric start problems. Match the part number carefully, and confirm the diagnosis before replacing anything.
Sources
- Safety guidance for small engines, including handling of starter cords and recoil springs (cpsc.gov)
- Basic information on small gasoline engine maintenance and fuel system care (energy.gov)
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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.
