Badboy zt elite knocks key on engine off

bsamot69

Forum Newbie
Joined
Aug 11, 2018
Threads
2
Messages
4
Turned ignition key on with engine off and loud knock occurs. Sounds like rod knock. Start engine , knock continues. No problems b4 todsy. Ideas, suggestions
 

ILENGINE

Lawn Pro
Joined
May 6, 2010
Threads
39
Messages
9,855
Are you saying the knock occurs when you first turn the key on or does it start knocking when the engine is cranking to start and then continues. May want to check the motor mounting bolts. It doesn't take much to create movement and a knocking noise on start up, shutdown, and during acceleration.
 

bsamot69

Forum Newbie
Joined
Aug 11, 2018
Threads
2
Messages
4
When the ignition key is turned to on position it knocks. No attempt to crank, yet. Just key on. Weird, huh? Then when crank and engine starts, the knocking continues.
 

ILENGINE

Lawn Pro
Joined
May 6, 2010
Threads
39
Messages
9,855
About the only thing I can think of that would have enough mass to clunk on key on would be the electric pto clutch engaging, but then the deck would be trying to turn when the engine was cranking, and then run after being started. Still may be worth a look as far a bad bearing, or on some mowers the clutch is electric hot on key on and uses the ground to engage and disengage, so a short could cause issues.
 

bsamot69

Forum Newbie
Joined
Aug 11, 2018
Threads
2
Messages
4
Checking it out this morning found the motor that raises/lowers blades/deck was source of knock, so last person that used it put the deck up past stop. Thank you for the input. This forum is great:)
 

ILENGINE

Lawn Pro
Joined
May 6, 2010
Threads
39
Messages
9,855
That will do it. thanks for posting the solution for your problem. Didn't think about the electric servo lift motor knocking trying to go past the stop point
 

JjEjFjF

Member
Joined
May 23, 2017
Threads
1
Messages
14
Checking it out this morning found the motor that raises/lowers blades/deck was source of knock, so last person that used it put the deck up past stop. Thank you for the input. This forum is great:)

Yeah , thanks for taking the time to let us know what the issue was. These forums are riddled with unfinished threads.
 
Top