OT---What did I do to my JD Zero Turn?

JerryS · Oct 4, 2013

I was mowing yesterday with my John Deere 445 zero turn (25 hp Kawasaki) when the front of the deck caught a hidden tree root. I was moving at a fairly good clip, but came to a sudden stop when I hit the root. Deck and blades are OK, but the engine immediately began surging and losing power. It will barely keep running when I throttle down to idle.

I'm not much of a mechanic, so I plan to take it in to the dealer, but I'm just curious as to what I might have jarred loose. Thanks in advance for any suggestions.

Hendrik · Oct 4, 2013

Sorry about your mishap.
Do not know your mower at all but had a spring come loose in the governor assembly of the air cooled engine of my mower, causing similar effects.
Was caused by my son's football hitting the mower :-(

Bryan inIowa · Oct 4, 2013

Just a guess ,,but made dislodged some crud in carb ow plugging up main jet ?

olddog · Oct 4, 2013

Check flywheel key.

flembo · Oct 4, 2013

I agree with Bryan had a similar thing with my 2n cleaned the carb and problem solved.

Mike (WA) · Oct 4, 2013

I'm with Olddog- an abrupt stop to the blade can bend the key just enough to put it out of time, but not shear it off completely.

JerryS · Oct 4, 2013

Mike, blades were unaffected; they never stopped whirling. Root had the same effect as running into the tree itself----sudden stop.

Aaron SEIA · Oct 4, 2013

I'd still think about the key. A sudden stop is going to be a shock to the hydro system and could still quick stall the motor causing the flywheel key to shear on inertia.
AaronSEIA

MARK ROBKE · Oct 5, 2013

I agree with Aaron. Mark

OT---What did I do to my JD Zero Turn?

JerryS

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Hendrik

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Bryan inIowa

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olddog

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flembo

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Mike (WA)

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JerryS

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Aaron SEIA

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MARK ROBKE

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