| Also known as | 70-5446, E5450 |
| Diagram | Fig. 1 — CRANKSHAFT AND CONNECTING RODS · ref 20 |
| Subsystem | engine bottom |
| Listed in parts books | 1964–1965, 1967–1968, 1970 |
ENGINE SPROCKET 650 29T - ET SPROCKET HAS BOSS FOR PEG - NON ET USE 70-5446
29 tooth engine sprocket for the 650 unit twin, ET version with a boss for the peg; non-ET engines use 70-5446 instead.
This is the engine sprocket for the 650 unit twin, 29 tooth, the one that carries the primary chain off the crankshaft. The catalog notes this version has a boss for the peg, meaning it's meant for engines fitted with electric start (ET). If your engine is a standard kickstart-only (non-ET) unit, the catalog points you to 70-5446 instead, since that one doesn't carry the peg boss.
Read more
It lives on the crankshaft, out at the front of the engine where the primary chain wraps around it and hands power along to the clutch and gearbox. This one shows up in our records under the crankshaft and connecting rods section of the parts book, and it's also carried the old E5450 number in earlier catalogs.
Worth double-checking which version your engine wants before ordering, since the ET and non-ET sprockets aren't the same part despite sharing the tooth count and application.
Sorry if we got something wrong here. If you think this information isn't correct, .