20 Most Recent Toro Power Clear 621 R Questions & Answers

If it starts and dies the Carb will need to be opened up and cleaned. On many Toro models, the carb is fairly easy to get to.

I suspect the carburetor needs cleaning. Gas nowadays is terrible on equipment that sits for long periods of time (like a snow blower) without being used. The gas nowadays goes stale very quickly and gums up the carburetor. To prevent these issues use a gas stabilizer. I have stabilizer in all my jerry cans of gas. That way everything I fill up is ready to be stored at any time. I'll give you an example of how bad the gas is.... My neighbour bought a new lawn mower. Selling feature of the mower was "guaranteed to start first or second pull". The next year it wasn't starting properly so he took it back. He was told he didn't store the mower properly over the winter (He didn't use a gas stabilizer) so no warranty. Took the carb apart and cleaned it ran like a champ....

if oil/gas mix is run thru a four cycle engine , id suspect the plug is fouled with oil , this may require replacement once your sure all the oil is out of machine completly

bad gas , plug ,air filter , no spark ck all need all 3 to start

clean the soot off of it take it apart recoil it and put new cord on ,dont be so lazy

Clean your carb, if you have not stored it correctly you have a dirty carb now. Carb could be gummed up.

If it has a bowl, there is only one screw to remove it. It is directly under the bowl usually brass colored and there will be a washer with it also be careful if it a fbric washer you can easilly tear it. Good Luck...

Question edited for clarity. When you put it away at the end of last snow season, I expect you just rolled it to the corner of the garage and left it until now? The two stroke gas in the carburetor, went bad and gummy. It starts on starter fluid because no gas is coming from the carb. https://www.google.com/search?q=toro+ccr+2450+carburetor+cleaning ..

See if the videos help. https://www.google.com/search?q=Briggs+and+Stratton+engine+model+252416+0757+01.install+the+spring+260695+for+the+governor+lever ..

did you make sure it has spark. i have learned over the years because an electronic is new doesn't mean its good? If it has spark remove the plug and put a bit of gas in the hole and re install plug see if it will fire on that gas. if it does its the carb something is probably blocking fuel. check the compression if its low compression it will not run. if u dont have a compression checker just remove the plug stick your finger tight over the plug hole and pull it over it should blow your finger off the hole.

Yes, decompression lowers cylinder pressure during low rpm while cranking. If you're concerned with compression, you need to do a leakdown test. Inexpensive (~$30) units are available through numerous eVendors. The leakdown test provides a metered volume of air that is translated and displayed on a pressure gauge simply labeled high (excessive leakage), moderate, or low (nominal leakage).

It's an L-head engine and once they get a few hundred hours run time, the valves wear into the hard seat, lash goes to zero, and they become hard to start. You can check valve lash by removing the crankcase breather (two screws). If lash is near zero, time for a valve job. Plenty of how to videos on the web. If it's easy start, just low power then less likely a valve lash issue.

There are many things that cause low power. Bad fuel, water in fuel (fuel bowl), fouled carburetor, poor spark, fouled plug, improper plug gap, wrong plug, weak ignition module.

If you have no forward, no reverse but the motor is still running normally the most likely reason for this is the main drive belt. This connects the motor to the transmission. If it stretches, breaks or drops off the drive pulleys you will lose all movement.

My thought is the seat safety switch is faulty, because normally these mowers won't work unless someone is sitting in the seat when if goes into the blade drive. There are other ideas in the videos. Frayed wires in the harness somewhere?

Yes, a high-pitched squeal coming from your electric snow blower when you turn on the blower could indicate a bearing issue. The blower motor is typically equipped with bearings to reduce friction and allow the motor to run smoothly. Over time, these bearings can wear out or become damaged, resulting in a squealing or grinding noise. If you suspect a bearing issue, it's important to have your snow blower inspected and repaired by a qualified technician or service center. Attempting to repair the snow blower on your own could be dangerous and may cause further damage to the machine.

Try taping it lightly with a hammer it has probably never been removed.

There could be a few different reasons why your Toro Z Master 2000 series lawn mower won't start. Here are some things to check:

1. Fuel: Make sure that the gas tank is full and that the fuel is fresh. If the fuel is stale or contaminated, it may not be able to properly power the engine.
2. Spark plug: Check the spark plug to make sure it is clean and in good condition. A dirty or faulty spark plug can prevent the engine from starting.
3. Air filter: A dirty air filter can restrict the flow of air to the engine, causing it to run poorly or not start at all. Check the air filter and clean or replace it if necessary.
4. Battery: If the battery is dead or not fully charged, the engine may not start. Charge the battery or replace it if necessary.
5. Ignition switch: Make sure the ignition switch is in the "on" position and that the safety switch is engaged.

If you have checked all of these things and the lawn mower still won't start, it may be a more serious issue that requires professional repair.

1. Make sure the line size is correct and compatible with your trimmer. Using a line size that is too small or too large can cause problems with the trimmer.
2. Check the spool for any debris or foreign objects that may be causing the line to break.
3. Check the line for any kinks or knots that may be causing it to break.
4. Make sure the trimmer is properly calibrated and that the line feed mechanism is functioning properly.

https://www.youtube.com/watch?v=JzO0s_MLVXA