Quick answer
Which Toro you have changes the diagnosis. Older Recyclers with a red primer bulb usually fail on fuel delivery: prime three times, and if it fires briefly then dies, the carburetor is gummed. Newer Recyclers and Super Recyclers with no primer and no choke lever rely on an automatic choke — when those crank without firing, the usual culprits are stale fuel, the auto-choke not closing, or a fouled plug. Electric-start models that just click need the starter battery charged; the recoil cord will still start a healthy engine.
Identify your starting system first
Toro walk-behinds have shipped with two very different setups, and troubleshooting advice for one wastes your time on the other.
- Primer-bulb models (older Recyclers, GTS engines): Toro's starting procedure is to press the primer firmly — without over-priming — then pull the recoil or hit the electric start, and ease the choke off once running. For a restart while warm, the primer and choke usually aren't needed.
- No-primer, no-choke models (most current Recyclers and Super Recyclers): the carburetor chokes itself automatically when the engine is cold. There is nothing to press. If the engine is cold and cranks clean without firing, the auto-choke system itself is on the suspect list.
The fuel is guilty until proven fresh
If the gas has been in the tank more than about a month — and definitely if it wintered there — drain it and refill fresh before diagnosing anything else. Ethanol-blend fuel left sitting gums the carburetor's jets, and the no-primer auto-choke carbs are especially intolerant of varnish because their passages are small and there's no primer shot to force fuel through.
While you're in there, find the inline fuel filter (on many Recyclers it's a small plastic piece in the line at the tank outlet) and hold it to the light. A darkened or clogged filter is a two-dollar fix.
Spark plug: swap, don't clean
Pull the plug and inspect it. Sooty, oily, cracked, or simply old — replace it. Toro's own guidance says starting is easier with a plug in good condition and to replace it if in doubt. A new plug also rules out the ignition side in one move: if a fresh plug stays bone-dry after several cranks, fuel isn't arriving (carburetor); if it comes out wet and the engine won't fire, you're looking at spark or flooding.
Auto-choke checks on no-primer models
When a cold auto-choke Recycler cranks but won't fire and the fuel is fresh:
- Remove the air filter cover and watch the choke plate while a helper pulls the cord on a cold engine. The plate should be closed (choking) when cold and open as the engine warms. A choke stuck open on a cold engine gives exactly the crank-no-fire symptom.
- Check the choke's return spring and linkage for damage or a popped-off end — a broken return spring is a known failure point that leaves the choke in the wrong position.
- If the choke moves freely and it still won't fire, the carburetor is gummed: clean it with spray cleaner through the intake and bowl, or drop the float bowl and clear the main jet. If cleaning doesn't hold, replacing the carburetor outright is usually cheaper than a shop visit.
Starts then dies after a few seconds
That's the auto-choke or primer doing its job and the main circuit failing to take over — classic partially-clogged main jet. It runs on the rich starting mixture, then starves. Cleaning the bowl and main jet fixes the overwhelming majority of these.
Electric start clicks or does nothing
Recyclers and TimeMasters with push-button start still have a recoil cord as a backup. If the cord starts the engine fine, the mower is healthy — charge the starter battery per the manual, and if it won't hold a charge after a full cycle, replace the battery. If neither the button nor the cord will turn the engine over at all, stop and check for a locked blade (debris jammed under the deck) before assuming the worst.
Warranty worth knowing about
Toro's GTS starting guarantee on covered engines promises a start on the first or second pull for two years with routine maintenance, and current Recyclers carry a multi-year residential warranty. If your mower is young and fights you every start, that's a dealer conversation before it's a parts order — and for battery-powered Toros that won't respond, the checks are entirely different: see our general mower no-start guide for the interlock rundown.