Exmark turf tracer 36 pull start with Kawasaki motor.. Mower starts and runs great but I can engage the blades cut for awhile after a few minutes it will start to spurt and sputter miss and eventually die. Disengage the blades it will start right back up. Motor runs fine as long as I'm not cutting grass! Give me a clue as to where to start dissecting the problem. Please.
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