mtd ride on slipping belt new belt a new pulley on deck hit a small stump until then all was good then started slipping like a bastard any time i give a load like cutting grass it slips bad new belt new pulley im thinking its an engine mount problem under load the engine is either tilting or sliding back is this a possibility. for reference its about an 84 to 86 model 12 horse 7 speed 48 cut its doing my head in
