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Have a 20 hp/50in cut statesman circa 2000, today without warning, the clutch/brake decided to disengage, thereby not allowing mower to move unless i put my foot under the clutch and pulled up so it would release the brake and engage the clutch. i am sure it is just\ an adjustment but i just acquired this mower a month ago and this occurred during the third cut...i can get it to work but not comfortable holding brake up with foot..sort of dangerous but i got the yard done...any ideas on this

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Hi,this solution will help you with the desired adjustment you need on your riding mower;
STEP 1 Put on gloves and eye protection, park mower on flat, solid surface, engage the emergency brake and remove the mower key. Then disconnect the spark plug wires to ensure the safety of the maintainer.
STEP 2 Locate the power takeoff (PTO) clutch on the mower. It is a small bell housing that should be attached to the underside of the engine, where it can provide power to the mower blades. The mower belt will be routed around the PTO---follow the belt and the PTO's location should become immediately apparent.
STEP 3 Locate the PTO adjustment slots. The adjustment slots are long, thin, rectangular openings in the brake plate that allow the maintainer to measure the gap between the rotor (the part that spins) and the armature (the part bolted to the engine).
STEP 4 Insert the feeler gauge into each of the PTO adjustment slots to check the distance between the rotor and armature faces. This will allow the maintainer to get an idea of the adjustment needed for the PTO.
STEP 5 Hold the feeler gauge in the first slot and tighten the adjustment nut until there is no gap left between the rotor and armature faces. Do not tighten the adjustment nut too far---the faces should just touch the feeler gauge.
STEP 6 Repeat the adjustment on the other two slots to ensure an equal adjustment at each of the adjustment nuts. It should be noted that even once the proper adjustment has taken place, the gap may vary slightly in each window. According to the Snapper operator's manual, "This is due to dimensional variations on component parts, and is an acceptable condition."
STEP 7 Reconnect the spark plug wires and start the mower. Engage the PTO switch so that the mower blades begin turning at full speed, and then disengage the PTO switch. If the mower blades and belt do not completely stop turning within five seconds of disengaging the switch, replace the PTO clutch assembly.

Thanks and take care

Posted on May 05, 2010


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