I can't recall Daisy ever having made one, but you may be thinking of the Crosman AIR17.
Daisy started making air rifles in 1895
Clarence Hamilton
If it's a recent Daisy or even some older Daisy's I would start with Daisy (See the link below) Daisy has some parts. OR: you can do a search on the web for "Air Gun Repair" and locate someone near you to repair the Daisy. OR: you can see the link below for a list of shops.
I suggest you go online and do a search for 'Air gun repair." and locate someone who fixed Daisy's.
I've gone through several air gun catalogues and have been unable to locate a Daisy model 170 bb gun that has ever been made. I did find a Daisy BB gun model 5170 and a BB rifle model 1170 along with a BB rifle model 107 but "NO" model 170. However I suggest you search the web for "Daisy Air gun Repair" or "Air gun repair" and locate someone near you who can help you.
Are you asking about a gun or a rifle. Which model are you asking about. Daisy had made over a 100 different BB guns and rifles
I believe your Sears BB gun may be made by Daisy air gun co and I think it is a model 1894 Daisy ( It looks like a Winchester 3030). Daisy offers a service to estimate the value of old airguns. see the link below.
This model was made by Daisy Air gun it's a model 1894. I suggest you do a search on the web for air gun repair ( there are several people who repair airguns.) locate one who repairs Daisy and send it to them.
I suggest you go online and do a search for 'Air gun repair." and locate someone who fixed Daisy's.
It sounds like a Daisy BB gun.
yes
I would start with Daisy air gun company. See the link below. contact Customer service.