The frame looks like a Mercian Strada Speciale based on the clover leaf cut outs in the lugs.
LFGSS.com 1985 Mercian Strada Speciale
At the Mercian website there is a collection of catalogs you can use to compare your bike to the manufacturer's specifications
The fork is confusing. I can't find a Mercian with a fork crown like yours.
Maybe the fork is from ...
Downtube shifter bosses suggest an 80s bike, or an earlier 90s frame.
The handlebars are untaped and what I can see looks like galvinised steel, which leans toward 80s.
All I can say is a lugged steel frame from the 80s. Please add a full photo from the bike's right-hand side.
Aside - your shiny new brake pads are for Alloy rims - are your rims aluminium ...
I've looked back at some of the BMX types of my youth years and recall there weren't many Skyway wheels with as many plastic spokes, ie, 7.
This may be your best search technique if the bike is totally original to when new.
Also another rare feature is the small triangular inserted section on the underside of the frame positioned near to the Head-tube&...
I used to have a Raleigh ultra burner and my mate a super tuff burner don't look like any of them but my mate had 1 with a pedal back brake similar to yours does this have a similar rear brake? Think it might of been a Mongoose or a Scott bmx.
As Vladimir says specific questions for issues will generate more detailed information. The problem is if you don't know what to ask for it's hard to know what to look for. Here is some information to get you started.
Here is a diagram of a bike like - but not exactly the same as - your bike.
Here is the link to the manufacturer's ...
You do not need a special manual and there probably isn't any. You have to identify the kind of parts that are used on the bike. Like: quill stem, coaster brake rear hub, the type of bottom bracket (square taper) and so on.
Most skills you need for this bike are the same as on any other similar bike from older times so you need to get generc knowledge about ...
It looks like a well made steel frame that probably has good quality butted tubing and seems to be quite racy with a fairly tight geometry. Looking at the Campagnolo dropouts doesn't tell us much as they were in a long production over decades. The sloping fork crown and the recessed brake nuts date this to being an 80s or even early 90s race frame. The seat ...
2016ish SE Bikes Tripel.
Vera CityWide are Fuji eom tires, not sure that's the same?
Why the yellow tyre?
Im pretty sure thats a trainer specific tire like this
Looks like a fairly basic steel frame with 3-speed nexus hub. Pretty common for a lot of retailers to stock a bike like this, without a logo on the frame its hard work to say which ...
Your bicycle is a
Model Boulder W S in Lavender
Serial number: c41bd535
Product number: 330573
However that doesn't give a year. I found that using step 1 of https://www.giant-bicycles.com/us/registration
Your next options are to complete that registration process, and to look through https://www.google.com/search?q=giant+boulder+&tbm=isch and ...