Repair 7

Mini bike motors are harder to repair than normal bike motors, due to their smaller scale of size. However, they are almost identical in structure. Repairing a mini bike motor will require disassembly, diagnosis, and reassembly. You will need to have some experience in working with motors to be able to complete the diagnosis, but the disassembly and reassembly processes will be easy. The whole process will take up to a week, not including the time it takes to order replacement parts.

Instructions

1

Turn off the bike if it is not already turned off. If you just turned it off, wait 2 hours before disassembling it.

2

Read over the troubleshooting section of the manual and check out which parts may have problems. Also, look over the assembly diagram to familiarize yourself with the machine.

3

Unscrew the screws on the case with a screwdriver from the toolkit. Lift away the case and lay it on the ground. Pull the wire away from the spark plug. Locate the motor towards the front end of the bike. Unbolt the bolts on the motor and caully lift the motor towards the front of the bike and then away from the bike. Set it gently on the floor or a worktable.

4

Remove the spark plug by unscrewing and then pulling it away. Remove the bolts holding the carburetor in place. Lift the carburetor away from the rest of the motor. Remove the cylinders, pistons, and bearings by pulling them away from the motor.

5

Check all the parts for consistency with the manual. Check for broken, rusted, or irregularly shaped parts. Also, check for missing parts. Order any parts that need replacement.

6

Install the bearings, pistons, and cylinder by pushing them back into place. Match the holes on the carburetor with the poles on the motor and gently lay the carburetor down on the motor. Bolt the carburetor in place with a socket wrench from the toolkit. Install the spark plug by screwing it back into its socket with your hand.

7

Pick the motor up and match it with the poles sticking out from the frame around 2 feet behind the wheel. Stick the motor in and bolt it in place. Stick the wire socket back on to the spark plug by pushing it firmly. Screw the case back on the bike.

The chrome bonnet scoops on the Mini Cooper S and JCW models have been known to melt due to the high heat of the engine. Mini has developed a fix for the problem, which is covered by the Mini Cooper warranty.

Models Affected

The Cooper S and JCW models from model years 2006 until 2010 with the chrome bonnet scoop are affected. The Cooper S and JCW hardtop, convertible and clubman can all develop the problem.

Causes

For the 2006 model year Mini went from a superchared to a turbocharged 1.6 liter engine. Initially the 2006 hood scoops were non-functional and closed off; however, new engine design meant more heat was generated at the top of the engine under the hood scoop, causing it to overheat and warp.

Solution 1

Mini dealers can replace the scoop under warranty with a new design that will not warp as easily.

Solution 2

Remove the scoop and put holes through the scoop to allow it to vent. Recent Mini hood scoops have a few holes in them, and increasing the number of holes may prevent the scoop from warping.

The Mini Cooper or "Mini," made by BMW, comes standard with a Service Interval Display or SID. This keeps track of when the next oil change is needed. It can be found near the odometer on the instrument panel. You should have the oil changed first before you attempt to manually reset the light or else it will keep turning back on. Its an easy fix requiring no special tools and just a few minutes of time.

Instructions

1

Put the key into the ignition. Locate the trip odometer button and press and hold it in. At the same time, turn the key in the ignition to the "I" position. Look for the message "51A" just left of the mileage on the instrument panel.

2

Release the button and wait for three seconds. Press and hold the trip button again and wait about five seconds. Look for the message "RST" next to the mileage counter. Once you see this message, release the trip button.

3

Press in the trip button again and wait for the message "15000" to show up. Once you see this message, release the button and turn off the vehicle. The oil light should now turn off.

4

Turn off the vehicle and wait one minute. Turn on the engine and verify on the instrument panel that the check oil light has remained off.