Toro mower, has its own brain

joesucks

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Hi all,
I have a Toro High Wheel Mower (Model 20016) with 6.5HP Tecumseh Engine, supposed to have a Guaranteed to start engine, it is 22" recycler, self propelled.

I really think my mower has its own mind, it is a nightmare to get it started, me and my kids are so much as scared to touch this thing. The biggest problem with this is to get it started, once it starts there is no stopping it, one of the smoothest mowers I have ever owned, starts on first pull (after first start). But to get that first start we have to do every possible dance under the sun.

Things I have done so far

  1. 1. Watched several youtube videos of this guy who pulls out the jet from the bottom and simply cleans it with a wire and wallah the mower starts to work, well I did that too 3 times so far, including the bowl, spray the carb cleaner.
    2. Removed the little black protector and cleaned the jet on the top.
    3. Put a new air filter and spark plug (had to go back to the old one, clean and prep, because looks like the new one is not properly gapped).
    4. Tried starting with starter fluid, it works some times but more than likely doesn't make any difference

Also the spark is clean and there is no problem there.
Am I missing a trick here? Please help, there are so many experts here, I am hoping one of you might have a simple answer to this problem.
Occasionally during summers, if i had left the mower out for couple of hours it seemed have help it start too, but that is sporadic and that trick seems to be over used now and my mower thinks i used enough turns of that too :frown:

Any help is much appreciated, I have in my possession a carb kit (same model as stated on the manual), but I am too intimidated to replace it yet, also trying to run out time with winter setting in, as a worst case start with new carb next season (worst case really)
 

exotion

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Wonder if your choke is stuck open. When its completely cold pull the starter a few times like your trying to start it. Take the air filter and housing off and see if the metal plate inside the carb is .closing off the hole if not try seeing if you can manually close it let us know what you find
 

joesucks

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Thank you for replying, is the plate visible once I take out the air filter ? I am a real newbie. Thanks
 

reynoldston

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Thank you for replying, is the plate visible once I take out the air filter ? I am a real newbie. Thanks

Yes it should be. some of the newer mowers it could be plastic and also some of them have a primer. I really didn't say anything because I don't know what you have.
 

Rokon

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I am not 100% sure your mower has a choke. Most 6.5 Tecumseh's have the red primer bulb to aid starting, and nothing else. :ashamed:
 

exotion

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I am not 100% sure your mower has a choke. Most 6.5 Tecumseh's have the red primer bulb to aid starting, and nothing else. :ashamed:

some kind of door should be in there no? Something governs throttle and it should be closed when cold and open when warm
 

afoulk

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most techumsehs only have the throttle blade in the carb for controlling the throttle. they usually have a primer bulb instead of a choke.
 

exotion

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most techumsehs only have the throttle blade in the carb for controlling the throttle. they usually have a primer bulb instead of a choke.

Interesting sorry for my ignorance I tend to stay Way from tecumenseh they are just headaches waiting to happen so if the primer bulb is all that helps cold start I would start with that is it intact is it kind that pushes fuel or air?
 

Rivets

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I would start by removing the carb and giving it a good cleaning. When you put it back together, I would install a new float needle and seat. Part number 631021B. If you decide to got this direction and need help installing the new parts, post back and I'll post a step by step procedure.
 
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