The Ogura GT2.75 PTO Clutch (Part # 09653700) is standard on all PT-300's (Except the 72" FX921).
It has a standard armature, rotor, and field coil. The armature engages rotor when PTO Switch is engaged,
closing air gap. This clutch has reversible brake plates that can be flipped when worn. Non-adjustable air gap.
Ogura Electromagnetic Clutch Troubleshooting
The Ogura GT3.5 PTO Clutch (Part # 09153900) is equipped with a rotor, armature, and field coil to allow for Power-Take-Off
and engage the mower deck. The GT3.5 clutch is adjustable to allow for a technician to open or close the air gap
between the armature and rotor.
Resistance at the field coil should be 2.12 ~ 2.88 Ohms. Use a feeler gauge to measure the air gap during adjustment.
The gap should be 0.012" ~ 0.024". Do not over tighten the nuts as this may force the rotor and
armature into contact.
Ogura Electromagnetic Clutch Troubleshooting