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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 26731
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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I have a craftsman garden lawn tractor model no 91728746. I

Customer Question

I have a craftsman garden lawn tractor model no 91728746. I clipped the top of a tree root while mowing. Bent the center blade but did not shear the gear the blade attaches too. When I try to start the engine I hear a loud click noise from the engine as soon as you turn the start switch. I removed the starter and checked it, it turned when I jumped it with cables. Cleaned the battery cables and ensured I was getting 12 volts from the battery. I rotated the engine from the bolt on top of the engine. It is not locked up also removed the v-belt to ensure I didn't have a weak starter. The click noise comes from the engine, like a safety switch. Not sure what to check next.
JA: Do you have fuel in the tank? If so, is the shut-off valve open and the fuel clean?
Customer: yes. The click noise is coming from the engine
JA: Do you plan on doing the work yourself?
Customer: yes
JA: Anything else we should know to help you best?
Customer: I best described the situation
Submitted: 5 months ago.
Category: Small Engine
Expert:  Curtis B. replied 5 months ago.

Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!

Expert:  Curtis B. replied 5 months ago.

What is battery voltage when you turn the key to start and you get the click? Does voltage drop from around 12.5 to 9 vols?

?

Customer: replied 5 months ago.
No
Expert:  Curtis B. replied 5 months ago.

No voltage drop? If you go to the starter solenoid, and jump the battery cable terminal, to the single switch wire terminal, does the engine spin?

Customer: replied 5 months ago.
No voltage drop, engine clicks clicks so as you turn the key
Expert:  Curtis B. replied 5 months ago.

Rapid clicking if you hold key at start?

Expert:  Curtis B. replied 5 months ago.

Are you testing with a voltmeter?

Customer: replied 5 months ago.
No one single click
Customer: replied 5 months ago.
Customer: replied 5 months ago.
Using a voltmeter
Expert:  Curtis B. replied 5 months ago.

And if you jump the starter solenoid does engine spin?

Expert:  Curtis B. replied 5 months ago.

What does battery voltage read?

Customer: replied 5 months ago.
Jumped the starter, it spins. Battery voltage is 12.45
Customer: replied 5 months ago.
Is there a safety switch for the engine
Expert:  Curtis B. replied 5 months ago.

Safety switch is seat and brake and pto switch. This click you hear is when key is flipped on and off?Or at start position? On and off can be the fuel solenoid in the carburetor clicking. You didn't damage the wires to the blade switch when you hit root?

Expert:  Curtis B. replied 5 months ago.

How did you jump the solenoid to get engine to spin? Across the two cable terminls, or the battery termial to the switch terminal?

Customer: replied 5 months ago.
Click I hear is when key is turned to on position. Happens instantly
Expert:  Curtis B. replied 5 months ago.

So likely the fuel solenoid. Safety switch would not click.

Customer: replied 5 months ago.
Click noise comes from the engine
Expert:  Curtis B. replied 5 months ago.

Fuel solenoid is on the engine, is it making this noise?

Customer: replied 5 months ago.
How do I check fuel solenoid
Expert:  Curtis B. replied 5 months ago.

You would feel the fuel solenoid and if it clicks when you turn key on, it is ok. It is not causing the probelm. No start is likley a seat switch or other safety switch not completing the circuit for start.

Customer: replied 5 months ago.
Where would be another safety switch