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To push start (bump start) a motorcycle with a flat battery: switch the ignition on and the kill switch to run, select second gear, pull in the clutch, push the bike to a brisk jog (or roll it downhill), then release the clutch quickly while dropping your weight onto the seat. When the engine fires, pull the clutch back in and rev gently to keep it running.
Step by step
- Check it’s safe: a clear, quiet road or a gentle downhill slope, with no traffic.
- Ignition on, kill switch to run, fuel on if your bike has a tap.
- Select second gear (first gear can lock the rear wheel).
- Pull in the clutch and push or roll the bike to around jogging speed.
- Pop the clutch: release it quickly while bouncing your weight onto the seat for rear-tire grip.
- Clutch in once it starts and keep the revs up.
- Ride for 20–30 minutes to recharge the battery, or get it tested.
When push starting won’t work
- Most fuel-injected bikes need some battery voltage to run the fuel pump and ECU. If the battery is completely flat, a push start may not work.
- Bikes with a dead or faulty starter relay will push start; bikes with no spark or fuel problems won’t.
- Automatic and DCT motorcycles and scooters can’t be push started.
Safety tips
- Use second gear rather than first; first gear can lock the rear wheel.
- Choose a clear, gentle downhill slope with no traffic.
- Wear your helmet and gloves; you’ll be moving as soon as it fires.
- Have a helper push if you can, and keep the kill switch and side stand in the run position.
Alternatives to push starting
- Jump start from another bike or a portable jump pack. Avoid jump starting from a running car; its alternator can overload a small bike’s electrics.
- Charge the battery with a smart charger or battery tender.
- Replace an old battery: most last three to five years. See our best motorcycle batteries.
Why your battery went flat
Common causes are a bike that sat for weeks, accessories left on, a failing regulator/rectifier or a worn battery. If it keeps happening, have the charging system tested. For storage tips, see how to winterize a motorcycle.
FAQ
Can you push start a fuel-injected motorcycle?
Often yes, if the battery has some charge left. A completely dead battery may not power the fuel pump.
Does push starting damage a motorcycle?
Done properly, it’s generally fine, but follow your manual.
Why won’t my bike start after a push?
The battery may be too flat, or there may be another fault. See how to maintain a motorcycle.
The bottom line
Second gear, clutch in, get rolling, pop the clutch. Then fix the cause so it doesn’t happen again.
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