Hi everyone,
New user here, found this place by Googling for a problem I'm having. Got a weed trimmer with a B&S 6 HP Intek (Model #121607-0018-E1) that often binds up on the compression stroke when trying to start it. I can start it with the rope; sometimes it spins OK, but many times the resistance is so hard you could just about pull your arm out of the socket. The electric start can't overcome the compression at all. Once it starts it runs great but you about kill yourself to get it going. The motor is about 1997 vintage. I've been the only owner. It has sat for a few years, but I would guess it has about 50 hours on it.
Here is what I have done, trying to get this thing going reliably so I can cut down the weeds I really need to cut down.
1) Replaced the battery.
2) Cleaned and overhauled the carb
3) Checked the valves and set the valve lash to .005. The specs I can find say .004 to .006.
4) Changed oil and all filters.
5) Replaced the spark plug with a new one of the correct type. (Champion RS12YC IIRC) Don't know why it had the wrong plug in it, but with the right one it does run much better WHEN it runs.
At one point I thought there was too much oil in it, so I drained ALL the oil out and the problem persists. I believe there was too much oil in, but as I said, with all oil drained it was just as hard to pull when it hit the compression stroke. It now has the correct amount of oil in it according to the dipstick.
Any ideas?
Thanks for all suggestions!
-- Jason
New user here, found this place by Googling for a problem I'm having. Got a weed trimmer with a B&S 6 HP Intek (Model #121607-0018-E1) that often binds up on the compression stroke when trying to start it. I can start it with the rope; sometimes it spins OK, but many times the resistance is so hard you could just about pull your arm out of the socket. The electric start can't overcome the compression at all. Once it starts it runs great but you about kill yourself to get it going. The motor is about 1997 vintage. I've been the only owner. It has sat for a few years, but I would guess it has about 50 hours on it.
Here is what I have done, trying to get this thing going reliably so I can cut down the weeds I really need to cut down.
1) Replaced the battery.
2) Cleaned and overhauled the carb
3) Checked the valves and set the valve lash to .005. The specs I can find say .004 to .006.
4) Changed oil and all filters.
5) Replaced the spark plug with a new one of the correct type. (Champion RS12YC IIRC) Don't know why it had the wrong plug in it, but with the right one it does run much better WHEN it runs.
At one point I thought there was too much oil in it, so I drained ALL the oil out and the problem persists. I believe there was too much oil in, but as I said, with all oil drained it was just as hard to pull when it hit the compression stroke. It now has the correct amount of oil in it according to the dipstick.
Any ideas?
Thanks for all suggestions!
-- Jason