| Also known as | E12425 |
| Diagram | Fig. 1 — CRANKSHAFT AND CONNECTING RODS · ref 5 |
| Subsystem | engine bottom |
| Listed in parts books | 1971, 1974, 1976–1980 |
FLYWHEEL,T140
Flywheel for the T140 unit twin crankshaft assembly, part number 71-2425.
This is the flywheel for the T140 unit-construction twin, listed in the crankshaft and connecting rods section of the parts book. It's the mass that rides between the two crankshaft halves, bolted in place as part of the crank assembly, and it's what smooths out the pulses from the two pistons firing so the engine doesn't shake itself apart at idle and low revs.
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Our records show this part number appearing across catalog listings from the early '70s through the late '70s, and you'll also see it cross-referenced under the older E12425 form if you're working from an earlier parts book. If you're rebuilding a bottom end, this is a part you pull, inspect, and reuse or replace based on condition rather than something that wears out on a set schedule, so check it over carefully before you decide.
If you're not sure whether the flywheel in your crank matches this number, bring it in or give us the numbers off your crankcase and we can help sort out what you've actually got.
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