JS300

The Kawasaki JS300 is recorded for three consecutive model years, 1986 to 1988. Every JS300 year on record is a carburetted two-stroke, with the engine recorded as 300.

At a glance

Years made: 1986 to 1988
Engine, as the records hold it: 300
Strokes: Two-stroke
Fuel system: Carburettor
Hull type: Stand-up
Model years on record: 3
Checked: None of the three JS300 model years verified, which needs a check against the maker's own document, which the row names, and an engine figure; all three name a source below.

Kawasaki numbers name the engine by its size class and are not measurements: a 550 is a 531, a 650 a 635, a 750 a 743.

1986
1987
1988

Solid: a row in the table

The Kawasaki JS300 from 1986 to 1988, one square for each model year, a decade to a row; follow a square to its row.

How we know: The 3 JS300 rows in the year table, with each row's grade and the engine cells it prints in bold.

Year by year

No recorded engine, fuel system, stroke count or hull type changes across the JS300's 3 model years.
Model year	Engine, as the records hold it	Fuel system	Strokes	Hull type	What the record says	Source
1986	300	Carburettor	Two-stroke	Stand-up	First year the catalogue carries the JS300. Kawasaki's own parts catalogue carries it for 1986 under code JS300-B1, the earliest JS300 code it holds.	Source 1
1987	300	Carburettor	Two-stroke	Stand-up	Kawasaki's own parts catalogue carries this machine for 1987 under code JS300-B2.	Source 2
1988	300	Carburettor	Two-stroke	Stand-up	Kawasaki's own parts catalogue carries this machine for 1988 under code JS300-B3.	Source 3

Sources

Kawasaki Motors Corp USA, Owner Center parts diagrams, 1986 JS300, kawasaki.com Retrieved 2026-09-20. (model year 1986)
Kawasaki Motors Corp USA, Owner Center parts diagrams, 1987 JS300, kawasaki.com Retrieved 2026-09-20. (model year 1987)
Kawasaki Motors Corp USA, Owner Center parts diagrams, 1988 JS300, kawasaki.com Retrieved 2026-09-10. (model year 1988)

Cite this page

“Kawasaki JS300”, BaddJet archive, https://baddjetarchive.com/reference/kawasaki/js300/

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