Airhead Reference › The book › Carburetion — Bing CV › R100S ('77) · R100T ('79)
Carburetion — Bing CV · Factory jetting — 40 mm (Type 94) · R100 twin-shock

R100S ('77) · R100T ('79)

Carb #
94/40/103–104
Main jet
170
Needle jet
2.66
Jet needle / clip · 341 · pos 3
BMW-WSM7 Slide 910 · atomizer 591 · idle jet 45 · idle mixture screw 1 to 1¼ turns · starting jet 80. The same carb set moves between models across years — it is the R100S set on the 12.77 sheet and the R100T set on the '79 sheet. Key jetting to model and year, never to the carb number alone.

This is the book's general row. In the book, pick your model and year and this figure resolves to your machine, with the one-page torque sheet, the job pages and the printable booklet.

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If this figure disagrees with your manual, say which manual and which page. Every report is checked against the source before anything in the book changes.

Also in Factory jetting — 40 mm (Type 94) · R100 twin-shock