Yz125 Power Valve Problems at Alice Powell blog

Yz125 Power Valve Problems. the yamaha power valves on the 125 are prone to having failures, yamaha has recognized the issue and has changed. at the same time thoroughly cleaning the power valves and mechanism so they don't 'stick'. how to fix a broken power valve pin on a yz using roll pins, a vice, metal file and a hammer. I put a re plated cylinder on, and as soon as i gave it full. so long story short, i took my 1987 yz 125 apart after getting a low reading on the pressure tester (about 40 psi) i took my top end apart thinking. i recently posted a thread involving a problem with the low end of a 97 yz125 and was told that the power valve. My powervalve is intermittently sticking open. i suspect that's making the power valve governor lose some of its 'range of motion', so it can't push the rod all the. ok here we go, i got a 2002 yz125 and the power valve does not open.it all started when i was riding and fell going.

My powervalve is intermittently sticking open. how to fix a broken power valve pin on a yz using roll pins, a vice, metal file and a hammer. ok here we go, i got a 2002 yz125 and the power valve does not open.it all started when i was riding and fell going. i recently posted a thread involving a problem with the low end of a 97 yz125 and was told that the power valve. so long story short, i took my 1987 yz 125 apart after getting a low reading on the pressure tester (about 40 psi) i took my top end apart thinking. the yamaha power valves on the 125 are prone to having failures, yamaha has recognized the issue and has changed. I put a re plated cylinder on, and as soon as i gave it full. at the same time thoroughly cleaning the power valves and mechanism so they don't 'stick'. i suspect that's making the power valve governor lose some of its 'range of motion', so it can't push the rod all the.

YZ125 Power Valve Tech Help/Race Shop Motocross Forums / Message

Yz125 Power Valve Problems the yamaha power valves on the 125 are prone to having failures, yamaha has recognized the issue and has changed. so long story short, i took my 1987 yz 125 apart after getting a low reading on the pressure tester (about 40 psi) i took my top end apart thinking. how to fix a broken power valve pin on a yz using roll pins, a vice, metal file and a hammer. I put a re plated cylinder on, and as soon as i gave it full. at the same time thoroughly cleaning the power valves and mechanism so they don't 'stick'. ok here we go, i got a 2002 yz125 and the power valve does not open.it all started when i was riding and fell going. My powervalve is intermittently sticking open. i suspect that's making the power valve governor lose some of its 'range of motion', so it can't push the rod all the. the yamaha power valves on the 125 are prone to having failures, yamaha has recognized the issue and has changed. i recently posted a thread involving a problem with the low end of a 97 yz125 and was told that the power valve.