If you provide the mower, you can set yourself up to be responsible for maintenance and liability if it malfunctions.

Ask the repairman to confirm if it was deterioration or malfunction versus actually damaged.  

If it malfunctions you will repair asap and nothing more.

We have experienced this over and over where the owners are spending money on deductibles and then we have to send out our maintenance people to fix the problem.Our next problem came in the form of a malfunctioning air conditioner.

If a fire is caused by an electrical malfunction or a propane tank or a forest fire, does the house burn differently? 

Is this a malfunction or the permanent way of how shares will be shown from now on?

I explained I will think about it and if I do allow it, they will be responsible for any and all damages and repairs due to malfunction or misuse, which they agreed to.

In your situation I’d probably be empathetic and say I’m sorry that this occurred, then explain to them there is nothing wrong with the electrical system in the house but rather it was the transformer which belongs to the electric utility that malfunctioned, then offer to give them the contact info for the utility in case they want to call them and ask for a new TV from them (good luck with that).

In one case, a water heater was malfunctioning, told her I would buy it that night and come replace the next morning... she was so delighted she paid $150 toward the cost of it!

Any damage caused by improper maintenance of the appliance or its malfunction will be repaired by the Landlord at the undersigned Tenant(s) expense.Tenant’s clothes washer and dryer will only be used by the legal occupants of the rental unit (as determined by the signed Lease Agreement, referenced above).