A young entrepreneur has been given the go-ahead to repair and sell motorcycles at 400 Old Colony Road, but selectmen Thursday put restrictions on his hours of operation after two residents complained about the noise of revving engines.

 Robert Martin, 25, was represented by Norton lawyer Dan Rich, who called him just the kind of businessman the state wanted to see in operation in these tough economic times. Rich said Martin has been working on motorcycles since he was 12 years old.

 His business, East Coast Motor Sports, has been in business for seven months and Martin has been leasing the property, but he applied for and received a Class 2 license that now will allow him to repair and sell used motorcycles.

 He told the board he owns two motorcycles that are on the premises, and said he will purchase other bikes at auctions to repair, display and sell them.

 He will also be working on and selling ATVs and dirt bikes, but told the board he will not have more than 10-12 vehicles in the shop at a time.

 “With gas prices the way they are, there will be a lot of work in that field,” Rich said.

 Several neighbors in the area told the three board members present there is already noise from motorcycles that disturbs them, particularly at night.

 One woman, who owns a residence at 396 Old Colony, said tenants have heard motorcycle engines revving up at 11:30 at night, and said the noise disturbs both adults and children living in the home.

 “It’s a dangerous neighborhood,” she said, commenting vehicles drive up on her lawn and adding she also has concerns about wetlands in the rear of the property.

 Martin assured the board all waste oil will be disposed of at a recycler, and said an oil/water separator in the drain within the shop will be maintained by the building owner.

 Board members agreed there is always the possibility of traffic or noise problems, but said they wanted to treat Martin’s business the same way they had addressed a previous liquor license granted to a pizzeria near Red Mill Village, also the object of apprehensive predictions by neighbors. In that case, they granted the license but reserved the right to address any problems as they arose, and will re-evaluate the license at the time of renewal.

 Selectmen did agree with one resident that lining motorcycles up on the lawn in front of the shop could cause motorists to become distracted in an already congested area, and limited Martin to two vehicles on display in front of the shop.

 Martin said he intends to have a two-foot by four-foot sign in front of the business, facing one direction.

 Board members also decided to limit Martin’s hours of operation from 9 a.m. to 6:30 p.m. They told residents not to hesitate to call to report excessive noise or other problems, but Martin assured members he intends to work with surrounding residents and businesses to make sure his venture is a good neighbor.