Toro Timecutter 75742 engine stopped in the middle of mowing. Won't start again

MacArthur

MacArthur

Forum Newbie
Battery fully charged, sprayed a few puff of carburetor cleaner into the air intake, it will start, but stopped very quickly again, which means spark plugs probably are OK.

Strangely there was some fresh fuel leakage at the input side of the fuel filter. Checked the connector and clamps, both are OK, no cut/broken, still sealed properly. Couldn't figure out where the leakage came from.

There's almost no fuel inside that clear filter. Fuel line between tank and filter is definitely not clogged, I can siphon gas out without any effort. Removed the fuel filter and blew it several times from the output, and I can see some debris inside. My guess is: regardless of the filter, some debris managed to get into gas tank and clogged up the carburetor bad, it "choked" up the whole thing

What do you guys think? Any advice is welcomed!
 
How well does it flow to the carb? It sounds like you blew from filter to tank, how is it going the other way? If it flows freely to the carb, I'd pull the carb and bowl, and check flow through the float valve. Since you have it opened up, I'd blow out the carb passages.
 
sgkent said:
pull the carb bowl and see if it has fuel in it.
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Mark H_NO said:
How well does it flow to the carb? It sounds like you blew from filter to tank, how is it going the other way? If it flows freely to the carb, I'd pull the carb and bowl, and check flow through the float valve. Since you have it opened up, I'd blow out the carb passages.
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Guess that's what I'll do over the weekend. Taking out the carb bowl requires a complete disassembly, that's big job for me.

Really hope there could be some quick and easy way to get it back to work ... //sigh
 
Hello Newbie,

Welcome to the forum.

The first thing we need with any machine is the product label information that is on the chassis and the engine model and spec numbers.

This way we can reference what configuration your machine is. They are not all built the same in a "cookie cutter" fashion.

From your description, it is likely some fine sediment has gotten through the fuel filter and plugged up the carburetor needle and seat or the main fuel jet.
 
MParr said:
Pull the fuel line off at the carburetor. Crank it over. Is there fuel flowing from the fuel pump towards the carburetor?
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Thanks for the reminder -- just realized that this Toro 75742 does use a pulse-style mechanical fuel pump instead of a simple siphon tube. So if any debris yes that will be more likely to get clogged than the carburetor.
 
Mark H_NO said:
Agreed! That's a quick and easy check to make sure.
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Fuel filter is in before the fuel pump -- judging by the fact that fuel filter is pretty dry (when it works there should be half cup of fuels inside that filter any time), I think it's safe to say that the fuel pump is either clogged or broken...
 
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Auto Doc's said:
Hello Newbie,

Welcome to the forum.

The first thing we need with any machine is the product label information that is on the chassis and the engine model and spec numbers.

This way we can reference what configuration your machine is. They are not all built the same in a "cookie cutter" fashion.

From your description, it is likely some fine sediment has gotten through the fuel filter and plugged up the carburetor needle and seat or the main fuel jet.
Click to expand...
Ordered a replacement kit for TORO #127-9206 Fuel Pump. I'll just replace it anyway and see if that fixes it.
 
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