Big Dog Alpha MP stalls after 10 minutes of cutting. Took for repairs.

MikeyP

Forum Newbie
Joined
Jul 5, 2021
Threads
1
Messages
1
  • / Big Dog Alpha MP stalls after 10 minutes of cutting. Took for repairs.
Changed oil and filter - new fuel filter - pulled gas tank and cleaned/new gas - pulled float bowl /flushed main jet and needed seat. Starts and runs for now only 5 minutes. Please help!!!
 

bertsmobile1

Lawn Royalty
Joined
Nov 29, 2014
Threads
64
Messages
24,647
  • / Big Dog Alpha MP stalls after 10 minutes of cutting. Took for repairs.
Does it restart immediately or do you have to wait 10 minutes or so ?
 

Born2Mow

Well-Known Member
Joined
Sep 18, 2020
Threads
11
Messages
764
  • / Big Dog Alpha MP stalls after 10 minutes of cutting. Took for repairs.
2 most common causes...
• Either the engine is over-heating due to clippings captured in the cooling fins, Or...
• Fuel tank breather (usually inside the fuel cap) is blocked and won't allow fuel to flow to carb due to vacuum inside the fuel tank.

But others are reporting a mercury safety switch is mis-aligned. This switch shuts off the engine should the mower over-turn. This is a new requirement and the switches and/or installation may not be fully understood, or may simply be too sensitive.
 
Top