selling MH

You meet at the bank/lien holder
And pay off the balance, you get what is left over
If selling for less than the balance of the loan, you can not...
You will have too secure funds to pay the balance or a loan to cover the balance
The buyer has too get a clear title

If it is a cash deal, there should be no time involved in getting a clear title.
As stated, meet at YOUR lender, give them the cash, they give you a lien release which you give to the buyer along with the Bill Of Sale. The lender gives you the title, which you sign over to the buyer, the lender's Notary notarizes your signature(s) on the title, and it is a done deal.
If any kind of a check or money order is involved, THEN it gets interesting. the lender probably will not release the lien until the check is verified and cleared.
The bottom line is, YOU must contact your lender and see how the transaction must be done to keep them happy. If the lender is not happy, the buyer and seller will not be either.

Great idea, however the lender is 5oo miles away, that's my problem.

I will tell you our story , When we bought our Motorhome of a private individual last year he owed more then we paid for it. What had to be done was the owner had to pay on his loan down to our purchase price.Once that was done the owner meet at our bank where we were securing the loan from and they called there bank for a pay off good for 14 days. The owner then signed a power of attorney stating for his bank to release the title to our bank upon pay off of his loan.Our bank was local here in Ohio and he had a loan through bank of West in Calif. It was nerve racking waiting for the title to arrive took about 3 weeks but it did with no issues.... As soon as his bank showed the loan balance as 0 he lets us come and take the motorhome with out title in our hand and all has been great.