Push primer 3 x's & pull-engine starts strong for 1 1/2 secs then dies. Ground wire fine, magneto & pick up fine. New spark plug,new air filter,fresh gas. Mower is lawn boy brand with accessary sensor on rear panel-thinking this may be the culprit. Haven't pulled the flywheel yet.
Posted by g_caster on
If the engine is running at all then your sensors should be ok. It sounds to me like its starving for fuel? Once the engine runs out of prime then it starves. Does the fuel system have a shut off valve? How about an inline fuel filter? Either could be plugged. I think what you will need to do is remove the carb from the engine and check to see if its clean and if fuel from the tank is flowing easily to it. Once you have the carb off the engine, remove the bowl from the carb by removing the bottom bowl nut. Use a small can or an ash tray to hold the small pieces. Shake the float back and forth to see if there is anything in it. Some floats are plastic and some are tin. If there is any liquid inside the float there is your problem. Otherwise continue on with your diagnosis by using a bread bag wire, minus the outer covering, and a little jet spray to probe and clean the internal jets. Pay particular attention to the center main jet which will have a small perpendicular air bleed hole near the bottom and to the air vent hole that is on the face of the carb where the air cleaner mounts. Any tiny piece of chaff will cause these to plug. For reassembly, the inlet needle slides into the float, and they are held to the casting by a pin. You can push the pin out with a small screwdriver and then grab it with a pair of needle nose pliers to get access to the float. Finally, check the O ring for cracks that goes between the bowl and the casting. This is an easy job, just take your time. Lawnboys are one of the better machines.
Posted on Aug 31, 2009
I was mowing the lawn and the self propel just stopped working. I'm told this could be an easy fix, but of course there's nothing in the instruction manual. Any ideas? the start pull cord is stuck
Posted by casey... on
My son just bought a new Toro self propelled 22" recycler and has had problems on two different occasions. The mower just bogs down to a stop and when he tried to pull the starter cord, it was very VERY difficult to pull. At first I thought the engine had seized up for some reason (no oil?), but we found the problem.
First, disconnect the spark plug wire from the spark plug (to avoid the engine starting); tip the mower on its side and check very carefully the pulley and transmission belt. In his case, a piece of wood had gotten stuck between the belt and the pulley. Removing it fixed the problem (now he mows a little higher so as not to get so close to any debris). (We did have one further problem after that - the engine would not start - not even fire. After pulling and pulling, checking for gas, and checking that the air filter was cleean, we decided to check if the cylinder was flooded - we removed the spark plug, wiped and dried if off, and replaced it. It started right away.)
This belt 'n pulley arrangement isn't the best idea, if you ask me.
Posted on Jun 08, 2009
I posted a question yesterday (6th July) concerning a problem with the rear wheel drive mechanism on a Toro 22in recycler lawn mower. There is a lot of gear noise when I try to engage drive. I apologize for not mentioning that the mower has a PERSONAL PACE DRIVE sysetm and this may be where the trouble is. Adjusting the cable makes no difference. At present I can only use the mower by manually pushing it.
Model numbers 20075, 20076 and 20076A
I would appreciate any help on how to fix this.
Posted by jpeace3 on
Problem is in the rear pinion gears on rear axle and the design of the axle itself. I have a 2005 model 20041 had the same problem. I found a Toro dealer that had the fix.The problem is creadted by the fact that there is too much "play" in the rear axle. You have to limit that play by installing shims, or washers First, but the 2 new rear pinion gears for the rear axle. While you're at it, you may as well buy 2 new rear wheels because the "grinding" has worn the sprockets on the reas r wheels.Next, get 2 "fender washers", 1/2" ID and about 1" OD. I found it easier to turn the mower over and set it on saw horses to work on it.( drain the gas and oil first). Remove both rear wheels, pinion gears and all the washers etc. (caution - keep all parts from one side together - do not pile all parts together - keep them seperated by wheel - the reason is I believe there is one more washer/shim on the right side than on the left). Now to put everything back together, find a spot on the axle where the washer will fit in between the standard stuff.Install new pinion gears and replace the rest of the washers/shims just as they came off. INstall new wheels and you'll be good as new!
Posted on Aug 02, 2009
Well of course I left fuel in the tank when I stored my mower and now it will not turn over. It started then about 30 seconds later cut out. I pulled out the fuel tank and completely drained it. Installed a new fuel filter (in-line). I checked the spark plug and it is in good shape. I checked to see if the spark plug wire is putting out a spark and it is. I also loosened up the nut on the bottom of the carb to drain out any old gas in there. Still nothing. Is there a way to prime the engine on this mower? I noticed after cranking it a few times that no fuel appears to be in fuel filter. i Know the fuel line isnt clogged because i cleaned it out. is there some sort of fuel pump in the tank? I have no idea what else to do. just trying to avoid taking it to get serviced. Thanks in advance.
Posted by sammyg2005 on
First check to see if there is a fuel shutoff under the tank. On some models there is a fuel filter screen inside the tank where the fuel line connects to the tank. If niether of these work, R&R the carb.
Posted on Apr 10, 2009
I asked someone to help me put on a new spark plug. Well the guy wanted to do more. Regardless he was mad when I asked for my mower back 2 wks later. Is there a screw or something on the carborator that could be adjusted to keep it running that this guy could of done to not make it start now?? There is no lever or anything on this mower to adjust the idle. It is a 22 inch Toro Recycler. I am a single mom with no money the lawn mower was hardly used in the past year. This guy wanted $100 bucks to get it ready for spring all I wanted was a spark plug as I had no tool to get it off. He took it and came back saying I needed a carb redo at $50 and then bad valves??? at another $125. I could buy a new one at that but I have no money can anyone help me out to fix this myself?
Posted by jdetato on
I have a toro mower for little over a year now and it no longer self propells as it should. I am not sure where to start in tacking this issue other than calling professionals to work on it.
Posted by Skywalker1 on
Self propell toro mower will not "self propell", nor can i pull it backwards
Posted on Aug 29, 2009
what is the gas/oil mix for a Toro CCR 2450?
Posted by mark... on
Hi my names Dane, and I'm going to help you.
The mix on the toro CCR 2450 is 50:1 I don't know if you;re having any more problems, but I wanted to include this link for you to check out. I'll let you judge.. Thanks! Dane
Posted on Dec 12, 2010
Toro electric start 22'' inch lawmower Model No. 20018. Starts fine manually but electric start just makes "erererer..." noise. Charging battery makes no difference, fuse looks fine. Had same problems last yr about this time and took it to dealer, whatever they did worked about 1/2 the summer, now it is doing the same thing.
Posted by toefungus on
There are a couple of things you can check;
First, check to make sure the bendix is engaging. It is the gear that meshes with the fly wheel.
If it is, then try and see how fast the motor is spinning. Don't look at the blade though. It could be a faulty starter motor.
Make sure to also check the battery voltage with a volt meter. It should read at 12.0 or higher.
Posted on Mar 03, 2010
i have a toro no prime no choke ready to start lawn mower that won't start
3 most common possibilities: Most gas mower carburetors have a tiny hole for the fuel to rise into the vacuum venturi throat of the intake. The hole in this riser tube which goes down the center of your float chamber to the area where the fuel sits in the bowl is only about as big as dental floss. Take the tine of a wire brush to clear it of crystallized or varnished gasoline and oxidized pot metal tube crust. When they make stainless carburetors, it will eliminate half of the heart attacks caused by this problem. Additives and condensation that settle out in old gas also can lead to clogging. Another very common problem is shearing the aluminum alignment pin in the top of the crankshaft when the mower whacks a log, root or rock. The inertia splits the alignment pin in half and throws spark timing off. So it backfires or won't run. Also check your spark by grounding the fat end of the sparkplug with a jumper cable to the engine casing, leave it plugged to the wire and pull the cord to see if it is firing. Keep spark away from fuel. Ignition points in some small engines get crusty when sitting in humid conditions. So they have to be filed clean of oxidation for proper contact and sparkplug operation.
Posted on Jul 03, 2016
Toro 149cc Lawn Mower Won't Start
Most gas mower carburetors have a tiny hole for the fuel to rise into the vacuum venturi throat of the intake. The hole in this riser tube which goes down the center of your float chamber to the area where the fuel sits in the bowl is only as big as dental floss. Take the tine of a wire brush to clear it of crystallized or varnished gasoline and oxidized pot metal tube crust. When they make stainless carburetors, it will eliminate half of the heart attacks caused by this problem. Additives and condensation that settle out in old gas also can lead to clogging.
Posted on Jul 03, 2016
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