Toro Lawnmower when Blade Clutch engaged Engine stopped

rolmJune 28, 2012

Toro Lawnmower when Blade Clutch engaged Engine stopped when I pulled to restart no compression, This is model 20465 Serial 5917434 I believe it's a 1995 machine. I removed the OHV cover I pulled on the cord and non of the valves were moving. I pushed each valve by hand and they were not seized. Best I can gather is the cam is not turning. The engine is not making any noises when I pull the cord so I am assuming the crank is not broken. The engine is a 5.5 hp is this a B&S engine or. Please see link with view of engine.

http://www.ereplacementparts.com/toro-2 ... 27946.html

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tomplum

Suzuki

    Bookmark   June 28, 2012 at 10:15PM
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rustyj14(W/PA)

Its Toast! Throw it away and buy a new one! Set old one on curb--it will disappear in 3 minutes!

    Bookmark   July 1, 2012 at 12:44PM
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rolm

I was just abought to trash the engine, for some reason I tipped the mower on it's side (oil side) and when I placed it on it's normal state I noticed I had compression when I pulled it, at this point the engine started ran for a few seconds, Next I removed the carb bowl cleaned out the junk and cleaned the jet. The mower started and ran for a few seconds, next time I pulled it no compression. I checked the oil level it was half on the dip stick I topped the oil up. Still no compression. So what gives here???????? I hate to throw out a working engine. Is there and oil pump on this engine that may be connected to the cam shaft that may be working as a low oil shut off??????? I believe the engine is a Suzuki

    Bookmark   July 15, 2012 at 2:19PM
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andyma_gw

I am guessing that tipping the mower on the wrong side floods the cylinder with the oil in the sump. This helps the rings seal and gives enough compression to run. Try tipping the mower and starting it.

    Bookmark   July 15, 2012 at 3:54PM
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tomplum

A 95 would be a Briggs. Sorry for the misinformation. Andyma could be right on, but you may want to remove the rocker cover to get a feel of valve action etc. Loose valve seat?

    Bookmark   July 15, 2012 at 10:20PM
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snuffyinatl

Sounds like you may have a valve sticking open. That would explain the loss of compression. May want to pull the head and verify both valves are opening and closing....

    Bookmark   July 21, 2012 at 7:52PM
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