Toro Power Clear 721: oil, paddle and cable service
The cited Power Clear 721 manual describes a single-stage rubber-paddled rotor, not a Power Max auger gearbox. It lists 0.6 L or 20 US fl oz nominal engine oil, an initial oil change after two hours and yearly changes later. Confirm model and serial before applying its plug, paddle-wear or cable instructions.
Do not empty an oil bottle into a partly filled engine
Form 3429-269 warns that oil remains after drainage. A 26-ounce bottle contains six ounces more than the 20-ounce nominal quantity, so the bottle size is not a refill instruction. Follow the manual’s level procedure rather than using a two-stage826LE’s larger figure.
The listed plugs are Champion RN9YC or NGK BPR6ES with a 0.030-inch gap. That differs from the cited older 826LE’s RJ-19LM family. Similar Toro branding does not identify a compatible service kit.
| Single-stage721 service point | Applicable manual specification |
|---|---|
| Nominal engine oil | 0.6 L /20 US fl oz |
| First oil change | 2 hours |
| Plug replacement | 100 hours |
| Specified plug gap | 0.030 inch |
Read the rotor wear indicators
The 721 uses wear-indicator holes in the rotor blades to determine when dealer replacement of the blades and scraper is required. Inspect them as directed instead of treating the rotor as a two-stage auger or applying gearbox-oil service to it.
The cable inspection comes after the first hour and then yearly; plug replacement is at 100 hours. Record those separately from the two-hour initial oil change and annual oil/rotor work. A short season can reach the calendar limit without accumulating100 hours.
Treat the 721’s rubber rotor as hazardous while it can move. Stop the engine, remove the key and complete the ignition isolation in its manual; wait for the rotor to stop before using a clean-out tool on the blockage. A rotor that fails to stop as the manual directs needs repair before more clearing.
721 manual, form 3429-269, Toro 826LE manual for the contrasting26-ounce figure
Toro Power Clear 721 snow blower: oil, spark plug, belt, scraper and paddles
The Toro Power Clear 721 takes 20 fluid ounces (0.6 liter) of oil, changed after the first 2 hours and then yearly. The spark plug is Toro 81-3250, or Champion RN9YC or NGK BPR6ES, gapped 0.030 inch and replaced every 100 hours. The drive belt is 138-8723, the scraper blade 133-5585 and the replacement paddles 38261.
Stop the engine, wait for the rotor to stop and pull the spark plug boot before you clear the chute or do any service. Never put a hand in the chute.
A single-stage snow blower with a 212 cc engine
The Toro Power Clear 721 is a 21 inch single-stage snow blower: a rubber-paddled rotor throws the snow and also pulls the machine forward, which is why it clears down to the pavement. It is covered by models 38752, 38753 (electric start) and 38756, all with the Toro 212 cc four-stroke engine. Being single stage, it wears differently from a two-stage: the paddles and the scraper blade touch the pavement and wear out, and a poly V drive belt runs the rotor.
20 oz
Engine oil
0.6 L. Do not pour it all in after a drain.
81-3250
Spark plug
Toro’s number; Champion RN9YC or NGK BPR6ES. Gap 0.030 in.
2 h
First oil change
Then yearly, with the plug at 100 hours.
Oil, plug and fuel
The engine takes 0.6 liter (20 fluid ounces) of oil. The manual gives the viscosity by temperature on a chart, and Toro sells a 5W-30 and a 0W-30 synthetic winter oil in 20 ounce bottles, which is exactly one fill. Fuel is fresh unleaded gasoline with up to 10% ethanol; the manual warns against E15 and E85 and against any methanol.
| Item | Specification |
|---|---|
| Engine oil capacity | 0.6 L (20 fl oz) |
| Spark plug | Toro 81-3250, or Champion RN9YC or NGK BPR6ES |
| Spark plug gap | 0.76 mm (0.030 in) |
| Spark plug torque | 27 to 30 N·m (20 to 22 ft-lb) |
| Fuel | Fresh unleaded gasoline, up to 10% ethanol; no E15, E85 or methanol |
The Toro Power Clear 721 snow blower schedule
| When | What |
|---|---|
| After the first hour | Check the control cable and adjust it if necessary. |
| After the first 2 hours | Change the engine oil. |
| Before each use or daily | Check the engine oil level and add oil if necessary. |
| Every 100 hours | Replace the spark plug and check the control cable. |
| Yearly | Inspect the rotor blades and have an authorized dealer replace them and the scraper if necessary; change the engine oil. |
The rotor blades have a wear-indicator hole. When it is exposed the blades are worn to the limit and the blades and the scraper should be replaced together by a dealer. Before storage, drain the fuel, run the engine, change the oil while warm, squirt about 10 ml (2 teaspoons) of oil into the spark plug hole and refit the plug at 27 to 30 N·m.
Parts to buy for the Toro Power Clear 721 snow blower
| Part | Part number |
|---|---|
| Spark plug | 81-3250 |
| Fuel filter | 127-9065 |
| Drive belt, poly V | 138-8723 |
| Scraper blade | 133-5585 |
| Replacement paddles | 38261 |
| Engine oil, 5W-30 synthetic winter | 38908 |
| Engine oil, 0W-30 synthetic winter | 38913 |
| Carburetor, complete | 127-9111 |
| Ignition coil | 136-7769 |
| Drive-belt cover | 108-4893-03 |
The belt is under a cover held by three bolts; a worn, oil-soaked, cracked or frayed belt should be replaced, and a belt that squeals under a heavy load needs its control cable adjusted first. The same maintenance habits apply to the two-stage Toro 826LE and the autumn changeover covers the storage routine.
- Spark plug: Champion RN9YC or NGK BPR6ES are equivalents.
- Fuel filter: In the fuel tank assembly 127-9497.
- Scraper blade: Scraper replacement kit PC21: 161-0963P.
- Replacement paddles: Extended-wear paddle kit: 38205.
- Engine oil, 5W-30 synthetic winter: 20 oz bottle.
- Engine oil, 0W-30 synthetic winter: 20 oz bottle.
- Carburetor, complete: Internal carburetor service kit 127-9394.
Toro Power Clear 721 snow blower: questions
How much oil does a Toro Power Clear 721 take?
0.6 liter (20 fluid ounces), per the operator’s manual. Toro warns that some oil stays in the crankcase after a drain, so pour about three-quarters in first and top up to the dipstick.
What spark plug does a Toro Power Clear 721 use?
Toro part 81-3250, or a Champion RN9YC or NGK BPR6ES equivalent. Set the gap to 0.76 mm (0.030 inch) on a new plug and torque it to 27 to 30 N·m (20 to 22 ft-lb).
How often do I replace the spark plug on a Toro Power Clear 721?
Every 100 hours, per Toro’s maintenance schedule, with the control cable checked at the same time. Wait for the engine to cool before you change it.
When do I change the oil in a Toro Power Clear 721?
After the first 2 hours of use, then yearly, ideally in autumn before the machine is needed. Check the level with the dipstick before each use or daily.
What is the drive belt for a Toro Power Clear 721 E?
Toro part 138-8723, a poly V belt, from the parts catalog for model 38753. It sits under a belt cover held by three bolts.
What scraper blade fits a Toro Power Clear 721 E?
Toro part 133-5585 is the scraper blade, and 161-0963P is the PC21 scraper replacement kit. Toro says a dealer should replace the scraper and rotor blades together when the wear hole shows.
What are the replacement paddles for a Toro Power Clear 721?
Toro sells Replacement Paddles as part 38261 and an Extended Wear Paddle Kit as 38205 for its 21 inch single-stage snow blowers. The paddles wear on pavement and need replacing over time.
What fuel filter does a Toro Power Clear 721 E have?
Toro part 127-9065, inside the fuel tank assembly 127-9497 in the parts catalog. The manual has you check it and the fuel hose as part of storage and start-up.
What oil should I use in a Toro Power Clear 721 in winter?
The manual gives viscosity by temperature. Toro sells 5W-30 synthetic winter oil (38908) and 0W-30 synthetic winter oil (38913) in 20 ounce bottles, which is one full fill.
What fuel does a Toro Power Clear 721 use?
Fresh unleaded gasoline with up to 10% ethanol. Toro warns against E15, E85 and any gasoline containing methanol, and against stale fuel.
How do I store a Toro Power Clear 721 for summer?
Drain the fuel and run the engine dry, change the oil while warm, squirt 10 ml (2 teaspoons) of oil into the spark plug hole, and refit the plug at 27 to 30 N·m.
What models does the Toro Power Clear 721 manual cover?
Models 38752, 38753 and 38756 with serial numbers from 400000000 up, per form 3429-269. The 38753 is the electric-start 721 E with the 212 cc engine.
When should the Toro Power Clear 721 rotor blades be replaced?
When the edge of a rotor blade wears down to the wear-indicator hole and the hole is exposed. Toro says to have an authorized service dealer replace the blades and the scraper.