Hi,
On the exhaust valve, I have repaired the valve seat, lapped the valve, replaced the valve seal and head gasket. Set the valve clearances. It started right up but It started but immediately blew out the valve seal because I did not understand how to seat it firmly. Lots of oily smoke. So I replaced the seal and the head gasket and set the valve clearances again. On impulse, I tested the compression and on cranking the engine, the resulting compression was 160. Valves too tight. So I adjusted the valve clearances again. It would not start.
The gas line was full of air, so I pulled the fuel line off the carbuerator and it pumped out the air and gave a normal gas flow.
It still wouldn't start. Good spark. No compression.
I pulled the valve cover gasket and on cranking the engine, saw that the intake valve, rocker arm and push rod are not moving.
Do you know what might be wrong? The mower was working fine until the exhaust valve seat failed.
On the exhaust valve, I have repaired the valve seat, lapped the valve, replaced the valve seal and head gasket. Set the valve clearances. It started right up but It started but immediately blew out the valve seal because I did not understand how to seat it firmly. Lots of oily smoke. So I replaced the seal and the head gasket and set the valve clearances again. On impulse, I tested the compression and on cranking the engine, the resulting compression was 160. Valves too tight. So I adjusted the valve clearances again. It would not start.
The gas line was full of air, so I pulled the fuel line off the carbuerator and it pumped out the air and gave a normal gas flow.
It still wouldn't start. Good spark. No compression.
I pulled the valve cover gasket and on cranking the engine, saw that the intake valve, rocker arm and push rod are not moving.
Do you know what might be wrong? The mower was working fine until the exhaust valve seat failed.