A friend asked me to look at his mower for him. It's a 1986 model 5254 19 inch aluminum deck with F series engine. He said it would never restart after it was warmed up. I thought it might be the coil going bad. I went to pick it up and he started it up for a minute and then shut if off. It surged a little bit at high RPM.
I smelled gas as soon as he shut it off and noticed it was dripping gas from the bottom or the carb. I had never seen a carb like that one. It had the primer tube
going into the bottom of the bowl nut. I told him I thought is was flooding and that was the carb and not the coil pack. So I took it home and took the carb off,
cleaned it good and took the seat out. Its a walbro LMR 1. The new needle and seat won't be here till Friday. After some web searching I figured out that the primer tube going into the bowl nut was something called cold start enhance. It is a discontinued item. What I was wondering about was if the carburetor still leaks out the bottom would a regular Walbro carburetor bowl nut work oK? I thought some of you guys might have worked on these before and might have some suggestions. Another thing, I thought most F engines around that time period used the same coils, but this one has two different leads and wires that run to the kill or shut off. According to the Lawn Boy parts viewer, it calls for the same coil as my F engines but its a completely different one. I thought that was kind of weird. Another strange thing is that I have a L21ZPN with serial no. starting with a G but Lawn Bow doesn't list it at all and I have 1997 model 10302 and the drawings and parts list says its a 4 stoke Tecumseh but its really V series engine. Very strange. Thanks for listening.
Jerry
I smelled gas as soon as he shut it off and noticed it was dripping gas from the bottom or the carb. I had never seen a carb like that one. It had the primer tube
going into the bottom of the bowl nut. I told him I thought is was flooding and that was the carb and not the coil pack. So I took it home and took the carb off,
cleaned it good and took the seat out. Its a walbro LMR 1. The new needle and seat won't be here till Friday. After some web searching I figured out that the primer tube going into the bowl nut was something called cold start enhance. It is a discontinued item. What I was wondering about was if the carburetor still leaks out the bottom would a regular Walbro carburetor bowl nut work oK? I thought some of you guys might have worked on these before and might have some suggestions. Another thing, I thought most F engines around that time period used the same coils, but this one has two different leads and wires that run to the kill or shut off. According to the Lawn Boy parts viewer, it calls for the same coil as my F engines but its a completely different one. I thought that was kind of weird. Another strange thing is that I have a L21ZPN with serial no. starting with a G but Lawn Bow doesn't list it at all and I have 1997 model 10302 and the drawings and parts list says its a 4 stoke Tecumseh but its really V series engine. Very strange. Thanks for listening.
Jerry