Both of my MTD lawnmowers start with the starting fluid but stall after a second of running. I changed the air filters, later just removed them for testing purposes. Checked the spark plugs (just in case), removed the carburetors and cleaned the bowl bolts, one was in pristine conditions, the other was clogged. Changed the gaskets on both bolts and bowls (on one the gaskets were really bad, so I got a rubber gasket at the NAPA autoparts, the fuel resistant one, since I could not find any place to buy the fiber one). Still the same result, starts goes for a sec or so and dies. Any ideas what could be wrong? Any help will be greatly appreciated, thanks.
MTD lawnmower starts with the starting fluid but stalls
- Thread starter dlogvine
- Start date
Sure, my bad.
First lawnmower
Model number 11A-B16M029
Serial Number 1B030K12605
the number is 126T02 0675-B2 09092958
Carburator pic
Top panel
Second lawn mower
Top panel
Number 12H802-3129-B2 01102457
Model Number 12A-288A300
Serial Number 1L181K30678
Carburator pics
First lawnmower
Model number 11A-B16M029
Serial Number 1B030K12605
the number is 126T02 0675-B2 09092958
Carburator pic
Top panel
Second lawn mower
Top panel
Number 12H802-3129-B2 01102457
Model Number 12A-288A300
Serial Number 1L181K30678
Carburator pics
From your description sounds like a fuel delivery issue. You said you cleaned the bowl nuts but sometimes the tube going from the nut into the carb venturi can also get clogged with junk fuel. Also it may not be a bad idea to remove the engine blower housings and make sure the plastic intake tube hasn't been cracked or the mounting bolts come loose.
It is the fuel delivery problem. I cleaned up one of the floating bowl bolt jets and one of the machines started running. The other one still coughs about 2 secs and dies. I purchased a new carburetor for the other mower, will just replace the whole thing.