Got a yanmar 1035-6a mini hoe and just installed a thumb on it this weekend. I re build a lot of cylinders on the side for people and a guy told me you got to turn the releif valve down on the aux port valve section or it will bend a rod when curling the bucket to the thumb. I can not get a valve drawing on what all the pressures are soposed to be to save my life. I have access to gauges and numerous hyd. fittings to adapt stuff to put my gauges on can somebody hook me up with some info thanks.
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