Toro Lawn Mower Won’t Start? Fixes by Model Number, From Toro’s Manuals

Which one applies depends on the model number, because Toro’s starting routine differs across Recycler, Personal Pace, Super Recycler and TimeMaster generations. Read it on the model and serial decal (Toro shows where) and do that row’s step before buying parts.

Starting steps by Toro model number

We read 14 Toro operator’s manuals, from the 20036 Super Recycler to the current SmartStow 21445 and the 2025 Recycler 21321. They describe 4 different starting routines, and doing one model’s routine on another looks exactly like a dead engine.

Swipe the table sideways to see every column.

Model	Engine	How to start it, per the manual	Model-specific no-start trap	GTS term	Source
21321 21in Recycler	Briggs & Stratton Ex 140 cc	Hold the blade-control bar to the handle; pull lightly to resistance, then sharply. No primer or choke step	Release the bar and the engine stops within 3 seconds, by design	3 years	Form 3456-222, p. 14
21332, 21352 21in Recycler	Briggs & Stratton 140 cc (21352 product page)	Hold the bar, pull	Same bar rule	3 years (21352)	Form 3440-905, p. 13
21445 22in Recycler SmartStow	Briggs & Stratton 150 cc	Hold the bar, pull	Never start it standing in the vertical-stow position; fuel at or below the engine decal line before standing it up	3 years	Form 3445-592, pp. 13, 17
21462 22in Personal Pace	Briggs & Stratton EXi 163 cc	Hold the bar, pull	Nothing to prime or choke: EXi engines use ReadyStart	3 years	Form 3444-703, p. 15
21464 22in Personal Pace Electric Start	Briggs & Stratton EXi 150 cc	Hold the bar, insert the electric-start button, push until it starts; the recoil also works	Battery needs a 24-hour first charge, then monthly or every 25 starts; 40 A fuse	3 years	Form 3444-703, pp. 15, 23
21565 21in Super Recycler SmartStow	Briggs & Stratton EXi 163 cc with Blade Stop	Hold the bar, pull	Same SmartStow fuel-level rule as the 21445	5 years	Form 3454-291, pp. 15, 19
21219 TimeMaster 30in, standard	Briggs & Stratton 223 cc OHV	Pull the recoil; the blades do not turn until you pull the blade-control bar after the engine starts	Holding the bar is the Recycler habit, not this model’s; STOP is a press-and-hold toggle	3 years	Form 3471-140, pp. 14, 16
TimeMaster 30in, electric start	Briggs & Stratton 223 cc OHV	Key to Start for no more than 5 seconds, or key to RUN and pull	Starting with the blade-control bar engaged may blow the 40 A fuse	See warranty	Form 3471-140, pp. 14, 15, 25
20340, 20355 22in Recycler SmartStow	Per engine decal	Per the engine maker’s manual	Fuel at or below the engine decal line; cut height 3-5/8 in or lower before folding	Per warranty at purchase	Form 3423-297, pp. 18, 19
20370, 20371, 20377, 20378 22in Recycler	Per engine decal	Hold the bar, pull	No primer step in this manual	Per warranty at purchase	Form 3375-431, p. 7
20372, 20374 22in Recycler	Per engine decal	Hold the bar, then turn the key (electric start) or pull	Key models need a charged battery	Per warranty at purchase	Form 3371-612, p. 8
20071, 20072 22in Recycler	Per engine decal	Push the primer 3 times, holding each for a second; 5 times below 55°F; hold the bar, pull	No start in 1 or 2 pulls: 1 or 2 more primer pushes	Per warranty at purchase	Form 3357-437, p. 8
20036, 20037 Super Recycler	Per engine decal	Primer 3 times, 1 second apart; 5 times at 55°F or below; hold the bail, pull	Do not prime a warm engine after a brief shutdown	Per warranty at purchase	Form 3328-678, pp. 9, 10
20093 21in Super Recycler	Per engine decal	Push the ignition toggle switch to On (I), then pull at the handle or at the engine	Toggle left at Stop; blade does not turn until you engage it	Per warranty at purchase	Form 3359-177, p. 8
21466 60V 22in Recycler	Battery, 60V Flex-Force	Install the battery, insert the button, press the button, then squeeze the bail	Battery not latched, not charged, or outside 41 to 104°F	No GTS (electric)	Form 3444-114, pp. 13, 23
21566 60V 21in Super Recycler	Battery, 60V Flex-Force	Insert the button, squeeze the bail, then press and hold the button	The reverse of the 21466 order	No GTS (electric)	Form 3448-963, p. 20

Every current gas Recycler and Personal Pace is hold-the-bar-and-pull (ReadyStart: no prime, no choke). The exceptions catch owners: the TimeMaster starts with the bar released, the 60V 21466 and 21566 reverse the button and bail order, and the 20036, 20037, 20071 and 20072 need 3 to 5 primer pushes.

Work through Toro’s checks in this order

Toro’s own YardCare checklist runs weather first (below 50°F, thicker oil makes cranking harder), then the air filter, controls in the starting position, fuel over 30 days old, the spark plug and, on electric-start models, the battery. The flow below folds in the model steps from the table.

1. 1Is it a 60V battery Recycler (21466, 21566)?

   YesLatch the battery fully (lid must close), charge it, keep it between 41 and 104 F, and follow your manual's button and bail order: they are opposite on these two models.

   NoGo to the next question

2. 2Is the fuel over 30 days old, or from a pump above E10?

   YesDrain it and refill with fresh 87 octane, 10 percent ethanol or less. Toro calls old fuel the leading cause of hard starting.

   NoGo to the next question

3. 3Is it a TimeMaster?

   YesStart with the blade-control bar released. Electric start: key to Start for 5 seconds at most; an engaged bar can blow the 40 A fuse.

   NoGo to the next question

4. 4Were you pulling without the blade-control bar held to the handle?

   YesHold the bar against the handle, pull lightly to resistance, then sharply.

   NoGo to the next question

5. 5Does it have a primer bulb (20036, 20037, 20071, 20072)?

   YesPush 3 times, 1 second each, or 5 times at 55 F and below. Do not prime a warm engine.

   NoGo to the next question

6. 6Is it a 20093 Super Recycler with an ignition toggle?

   YesPush the toggle to On (I) before pulling.

   NoGo to the next question

7. 7Does the electric start click or do nothing (21464)?

   YesCharge 24 hours, then check the 40 A fuse; the spare is in the battery compartment. The recoil still works.

   NoGo to the next question

8. 8Was a SmartStow mower stored upright with fuel above the engine decal line?

   YesLay it level, check the oil and the air filter, then start it on the ground, never standing.

   NoGo to the next question

9. 9Is the plug wire loose, or the plug fouled or not gapped at 0.030 in?

   YesReconnect the wire; replace with Briggs 692051 or 491055S per your model, torqued to 15 ft-lb.

   NoStill no start after several attempts: Toro's manuals say contact an Authorized Service Dealer. Inside the GTS term, bring the receipt and do not open the carburetor first.

Source: Toro operator's manuals (Forms 3328-678 to 3456-222) and Toro warranty 3478-788

The same checks for Honda, Kohler and MTD-built mowers are on our lawn mower not starting checklist. Fuel limits maker by maker, including why E15 is off limits, are on our guide to what gas a lawn mower takes.

SmartStow models: the fuel line before you stand it up

The SmartStow manuals for the 21445, 21565 and older 20340 say: store it upright only with fuel at or below the level on the engine maker’s decal, never past 90 degrees, never transport it standing, and never start it in the vertical-stow position (Form 3445-592, p. 17). Before folding, lower the cut height to 3-5/8 in (92 mm) or less (p. 18).

Briggs & Stratton’s Mow N Stow page cites a 110 degree storage angle; Toro’s manual stops at 90, so use Toro’s number. If yours was stood up overfilled and now will not start, lay it level, check the dipstick and the air filter, which Toro says to replace when excessively dirty (p. 20). White smoke afterward is explained in our lawn mower smoking guide.

Tipping for service has its own rule. Toro says to run the tank dry or empty it with a hand pump, never siphon, and tip the mower onto its side with the dipstick down (Form 3445-592, p. 19). Our oil change guide covers the drain itself.

Primer, choke or neither: why older Toros start differently

Current EXi engines have no primer and no choke, per Briggs & Stratton. Older Toros do. The 20036 and 20037 Super Recycler manual (Form 3328-678, p. 9) says push the primer 3 times, a second apart, or 5 times at 55°F (13°C) or below, and never prime a warm engine after a brief shutdown: the first check on a primer model that won’t restart hot.

The 20071 and 20072 manual (Form 3357-437, p. 8) gives the recovery step: if the mower does not start in 1 or 2 pulls, press the primer 1 or 2 more times and try again. Toro’s troubleshooting table in Form 3328-678 (p. 20) lists an unpushed primer second, after stale fuel, and a plugged fuel cap vent hole under hard starting. None of the 14 manuals we read has a choke lever step.

Electric start, keys and switches

On the 21464 Personal Pace Electric Start, charge the battery 24 hours before first use, then monthly or every 25 starts (Form 3444-703, p. 23). If it will not charge or the starter will not turn the engine, replace the 40 A plug-in fuse; a spare sits in the battery compartment. The recoil still works on a flat battery (p. 15).

The electric-start TimeMaster uses a key: hold it at Start 5 seconds at most, and never with the blade-control bar engaged, or the 40 A fuse may blow (Form 3471-140, pp. 14 and 15). With no alternator, only the charger refills its battery (p. 24). The older 20093 Super Recycler needs its ignition toggle at On before any pull (Form 3359-177, p. 8).

Battery Recyclers fail differently. Toro’s 21466 table lists a battery not fully installed and latched, not charged, or damaged, and a red charger light when the pack is outside 41 to 104°F (Form 3444-114, p. 23). The 21566 manual says the battery is not fully in if the compartment lid will not close (Form 3448-963, p. 20).

Spark plug part numbers and gap

Toro’s product pages name a Briggs & Stratton plug for each current gas mower, most marked Not Sold on toro.com. Briggs & Stratton lists both parts as Champion RC12YC replacements gapped at 0.030 in. Its chart labels 692051 for two Vanguard engines only, while Toro specifies it for these mowers; buy the part your Toro page names.

Toro models	Spark plug	Gap	Torque when reinstalling	Source
21321, 21352, 21445, 21464, 21219 TimeMaster	Briggs & Stratton 692051	0.030 in (0.76 mm)	15 ft-lb (20 N·m)	Toro 21445; Briggs chart; Form 3456-222, p. 22
21462, 21565 Super Recycler	Briggs & Stratton 491055S	0.030 in (0.76 mm)	15 ft-lb (20 N·m)	Toro 21462; Briggs chart; Form 3445-592, p. 23

A loose plug wire and a fouled or wrongly gapped plug follow fuel and the primer in Toro’s troubleshooting table (Form 3328-678, p. 20). Blade work follows the same plug-wire-off rule; see our blade sharpening guide.

First start after winter storage

Toro’s manuals have you squirt 1 fl oz (30 ml) of oil into the cylinder at storage, so the spring start begins by clearing it. The 21321 manual (Form 3456-222, p. 22) lists the order:

1. Remove the spark plug and pull the recoil handle rapidly to blow the storage oil out of the cylinder.
2. Reinstall the plug and torque it to 15 ft-lb (20 N·m).
3. Check the oil on the dipstick; our lawn mower oil type guide lists 15 fl oz for the Recycler 21332 and 21352.
4. Fill the tank with fresh fuel: no more than 30 days old, 87 octane or higher, 10 percent ethanol or less.
5. Reconnect the plug wire, hold the bar and pull.

The same page calls old fuel “the leading cause of hard starting.” Toro’s warranty accepts that a first start after over 3 months of storage, or a cool spring or autumn start, may take more than 2 pulls (Toro warranty 3478-788).

Does Toro’s Guaranteed to Start promise cover it?

Toro promises to repair or replace a residential gas Recycler whose engine “does not start on the first or second pull” for the GTS period, and its claim test is whether “an able-bodied adult can no longer start your product in 1 or 2 pulls” (Toro warranty 3478-788 Rev C). GTS does not apply to commercial use, which includes rentals and mowing more than one location.

Product	Mower warranty, residential	Engine warranty with GTS, residential	Commercial use
Gas Recycler, black steel deck, Briggs & Stratton engine	5 years	5 years	Mower 45 days, engine 90 days; no GTS
Gas Recycler, steel deck, Briggs & Stratton engine	2 years	3 years	Mower 45 days, engine 90 days; no GTS
Gas Recycler, cast deck, Briggs & Stratton engine	5 years	5 years	45 days; no GTS
Gas Recycler, cast deck, Toro engine	5 years	5 years	45 days; no GTS
Electric Recycler, steel or resin deck	2 years	None	45 days
Belts and wheels, walk power mowers	90 days	None	45 days

1. Black steel deck, Briggs5
2. Steel deck, Briggs2
3. Cast deck, Briggs5
4. Cast deck, Toro engine5

Source: The Toro Warranty, Consumer Mowers, Form 3478-788 Rev C Commercial use: 45 days on the mower and no GTS. Periods run from the original purchase date.

Show the numbers

	Mower warranty (years)	GTS starting guarantee (years)
Black steel deck, Briggs	5	5
Steel deck, Briggs	2	3
Cast deck, Briggs	5	5
Cast deck, Toro engine	5	5

The exclusions decide most no-start claims, and several are things owners do before calling:

Toro excludes	What it means at the pull cord
Fuel more than 1 month old, over 10% ethanol or over 15% MTBE	Drain and refill before you claim; a stale-fuel no-start is not covered
Fuel system not drained before more than 1 month of non-use	Run it dry at season end, as the manual’s storage steps say
Improper starting procedures	Use your model’s row in the table above, including primer, toggle or button order
First start after over 3 months of storage, or a cool-temperature start	More than 2 pulls is allowed and is not a GTS failure
Repairs or attempted repairs by anyone other than an Authorized Toro Service Center	Do not open the carburetor before the dealer sees it
Spark plugs, air filters and other maintenance parts	You pay for these even inside the GTS term

To claim, take the mower and the sales receipt to a Toro Authorized Service Center, which decides coverage; Toro excludes pickup and delivery charges. If it is outside GTS, shop prices for the same fixes are in our lawn mower repair cost survey of 26 shops.