How To Jump-Start A Motorcycle

Travelling by motorcycle is a joy, but you should be prepared for any eventuality. One of the most important things you should know is how to jump-start a motorcycle if you've got a flat battery. Don't worry: The Bike Insurer is here to tell you the four main ways you can jump-start your motorcycle if you find yourself in a fix, but note that a jump start is only helpful if you've got a flat battery. If there's another mechanical fault with your bike that's preventing it starting, then jump starting isn't going to help.

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1. Push Start

A push start, possibly best known as 'bump-start', is a way to start a motorcycle with no external equipment, such as another vehicle or portable charging kit. It does need a level of strength, competence and biking experience to perform safely and successfully, so if you're a new rider or are otherwise not able or confident to proceed with a bump-start, get some professional help instead.

If you're going to try a bump-start, a helping hand from any passenger, passerby or neighbour may make this easier (especially if they're strong!). Safety first, so ensure you have a clear stretch of flat or downhill road ahead of you before push-starting your motorcycle and that the road conditions are safe to proceed. Then, follow these instructions:

Step 1

Make sure the kill switch (otherwise known as the emergency-off button) is in the correct position and your stand is up. Then, turn the key in the ignition to the 'on' position.

Step 2

If you have a sports bike, click it into first gear. For all other motorcycles, click it into second gear and keep the clutch held.

Step 3

If you have someone on hand to help, seat yourself on the motorbike whilst holding the clutch in. Ask your athletic companion to push you as fast as they can or you could let gravity assist and roll down a hill. If you're on your own and are able and confident, run alongside the motorbike whilst holding in the clutch before leaping onto the motorbike when you've reached top running speed!

Step 4

Now you are seated safely, snap the clutch out hard by releasing the lever. Hopefully, the engine will fire, but keep close control of the clutch at all times to avoid lurching forward. You may need to rev the engine to get it to fire properly.

Step 5

Once the engine has started, safely come to a stop and warm your engine up before riding off.

2. Use A Car Engine

You might be travelling via motorcycle, but that's not to say another vehicle can't help out. Perhaps a friend or a kind stranger will let you use their car engine to jump-start your motorcycle in a pinch. 

But be warned! This method may adversely affect your motorcycle's electrical system and battery life. The higher amperage of a car battery could be damaging and may void your vehicle's warranty. If you're in any doubt, get some professional help.

Step 1

Begin with both the assisting car and motorcycle entirely switched off. Then, using jumper cables, connect the red, positive clip to the positive terminal of your motorcycle battery. Attach the other positive clips to the positive terminal of the car engine.

Step 2

The black, negative clip should be attached to the negative terminal of the car engine and to any bare, metal surface on your motorcycle.

Step 3

Attempt to start the bike with the car engine switched off entirely. If you leave the car on while trying to jump-start your motorcycle, you risk damaging electrical components and the battery.

Step 4

If this method doesn't work after several tries, the battery is likely completely dead, or something else is stopping you from getting back on the road.

Step 5

If your motorcycle starts, begin removing the clips in the opposite order you attached them. Then, drive around for a while (possibly 10-20 minutes) to ensure your battery is charged to maximum capacity.

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3. Use Another Motorbike

This process is similar to jump-starting with a car, so our instructions won't differ too much. All you need is a pair of jumper cables and another motorbike!

Step 1

Ensure both bikes are in a neutral position and entirely switched off. Begin connecting the cables to both motorbike batteries.

Attach a red, positive clip to the positive terminal of the functioning bike's battery and attach the other positive clip to the positive terminal of the dead battery.

Then attach the negative clip (black) to the negative terminal of the working battery and fix the other negative clip to any metal surface of the dead battery's bike that is non-painted.

Step 2

Give the functioning bike a few moments to get started after you switch it on to give the battery the best chance.

Step 3

Then, start the bike with the dead battery. If it gets going, great! Take it for a 15-20 minute journey. If, following numerous attempts, your bike isn't starting, the battery might be entirely dead or there's something else going on that's stopping your bike from firing up.

Step 4

Start removing the jumper cables in the opposite order you put them on: this means you'll begin by first removing the negative cable from the dead bike.

4. Use A Jump Starter Machine

If you come prepared for precarious scenarios, like a drained battery, you'll likely have a jump-starter machine on you.

Step 1

You'll want to start by connecting the jump starter to the dead battery. Attach the positive clip to the terminal marked POS for positive. Do the same for the negative clip and negative terminal.

Step 2

Power on your jump starter!

Step 3

Do not start your motorcycle by holding the ignition switch for an extended period: this is not complementary to how a jump-starter machine works. Instead, use short bursts to match the bursts provided by the jump-starter.

Ensure you wait a couple of minutes between each attempt. If this doesn't work after several tries, your battery is likely dead. But if it does, remove the negative clip first and start revving your bike to get the charge back into your battery!

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Is jump-starting a motorcycle bad?

As we mentioned throughout the article, some risks come with different methods of jump-starting. Using a car to jump-start a motorcycle may cause damage because car batteries have a significantly higher amperage.

You don't want to cause any further damage to your bike's electrical system. Similarly, if you push-start your motorcycle incorrectly, it could cause future issues with your gears and clutch and it's also easy to fall off and hurt yourself in the process, so only do it if you're confident and physically capable.

There's a lot of good advice available nowadays, so perhaps you could watch a video tutorial of someone jump-starting their bike first to give you a better understanding of the process. While jump-starting has risks, it could be better than being stranded without knowing how to jump-start your motorcycle.