I have a John Deere 110 with a 19.5 HP B&S motor, model number 31P677 Type 0125G5.
The motor is starting hard. I have the valves adjusted to .005 on the intake and exhaust. I've tried every adjustment for .004 to .007 and the mower is still starting hard.
When I turn the engine by hand both valves are lifting properly. The motor is starting so hard that it is shearing or breaking my starter gear. When I try to start the motor turns and it will hits the compression stroke and bounce the motor back which breaks the starter gear. Basically doing kind of a back fire. I've replaced five gears in the last two weeks.
Could this be a Cam problem? I'm thinking if the cam is bad the valves won't open properly but they seem to be functioning properly. I have 681 hours on this motor and I use it every day for my lawn business. The battery is new last March. The Starter is new as well.
I'm out of ideas and need some help.
The motor is starting hard. I have the valves adjusted to .005 on the intake and exhaust. I've tried every adjustment for .004 to .007 and the mower is still starting hard.
When I turn the engine by hand both valves are lifting properly. The motor is starting so hard that it is shearing or breaking my starter gear. When I try to start the motor turns and it will hits the compression stroke and bounce the motor back which breaks the starter gear. Basically doing kind of a back fire. I've replaced five gears in the last two weeks.
Could this be a Cam problem? I'm thinking if the cam is bad the valves won't open properly but they seem to be functioning properly. I have 681 hours on this motor and I use it every day for my lawn business. The battery is new last March. The Starter is new as well.
I'm out of ideas and need some help.
