LOS ANGELES — The library bond that goes to voters in November has its final language, and the fight over the last two weeks was about a sentence that is no longer in it.

The measure, certified this week, would authorize borrowing for construction, seismic retrofit and accessibility work at 34 branches, including the Hollywood branch, whose 1920s reading room reopened in July after nineteen months of structural work that ran over budget and past two deadlines. The bond funds buildings. It does not fund hours, staff, books or programs, all of which come from the annual operating budget, and that distinction is the whole of the argument.

The draft that went to the county’s counsel in June contained a clause committing the system to maintain existing service hours at any branch receiving bond funds for the life of the improvements. It was removed before certification.

“It came out for the reason those clauses always come out,” said Curtis Bellweather, who has spent four years organizing for the measure and was in the room for two of the three drafting sessions. “Counsel says a bond cannot bind an operating budget it has no jurisdiction over, and counsel is right, and it is still the thing every single person at every single library meeting asks about. We are now going to spend three months answering it without the sentence.”

The concern is not hypothetical here. Hollywood lost weekday evening hours in the 2024 budget cycle, then lost the reading room entirely to construction, then ran a folding-table lending service out of the lobby for nineteen months. The room is back. The Thursday evening hours are not.

Naomi Farrell, a retired branch librarian who now sits on a Friends of the Library board, put it more bluntly than the campaign would prefer. “You can seismically retrofit a room and lock it at five,” she said. “I have watched that happen in this county. A beautiful, safe, empty room.”

Supporters’ answer is that the bond is not competing with hours but preventing a worse choice. The system’s deferred-maintenance backlog is $1.4 billion by its own accounting; nine branches have unreinforced masonry or pre-1976 concrete frames awaiting retrofit; and every year that work waits, it is paid for out of the same operating fund that buys the hours, in emergency repairs and closures.

Opposition has been quieter than the measure’s organizers expected and comes from two directions that do not much like each other. A taxpayer group objects to adding to the property-tax rolls for buildings, arguing the system should shrink its footprint rather than retrofit it. A smaller set of library users objects that the branch list was assembled without a published ranking, so that no voter can tell why one branch is on it and another is not.

That second complaint has some force. The system says the 34 branches were chosen on structural assessment, equity criteria and readiness to build. It has not released the scoring.

The measure requires two-thirds approval, a threshold that has ended better-funded campaigns than this one. Bond measures for libraries have historically done well in the county and the last comparable one, in 2016, cleared with room to spare — but it was on a presidential ballot, and this one is not.

What the campaign has instead is the reading room, and it intends to use it. The first organized bond event is scheduled for the 22nd, in the room itself, with a table of the original 1926 card catalog drawers that the retrofit preserved because a preservation consultant insisted and a contractor grumbled.

Mr. Bellweather said he has one rule for volunteers between now and November, arrived at after the clause came out.

“Do not promise anybody an hour,” he said. “Promise them a building that is still standing in the earthquake, and tell them the hours are a fight we have every June, and that they are invited to that one too.”