The most common and most likely answer to this crossword clue is the 8 letter word RESTORER
I've seen this crossword clue in The Sunday Telegraph
R
E
S
T
O
R
E
R
More clues leading to the result RESTORER
- Craftsman's business in arrears regularly
- Furniture craftsman possibly concerned with shop on river
- Repairer has hesitation about shop beginning to rot
- Repairman set out in error, confused
- Who’ll renovate antique luxury car round back of furniture shop
- Lounge layout disheartened artisan
- Craftsman’s disastrous error covering broken set
Buddy explains!

The straight part
We know that "Repairman" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case repairman = restorer.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does RESTORER mean?
RESTORER noun- One who restores.