Jammed ignition switch - MVAgusta.net
 
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post #1 of 5 (permalink) Old 10-29-2017, 05:40 PM Thread Starter
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Jammed ignition switch

Started the bike as usual, once warmed up switched off and withdrew key. Later put key in ignition switch and it would turn to the first ignition position but would not rotate to the start position. Key can be turned to the anticlockwise positions to activate steering lock and works normally to the left positions but will only go so far as to turn on the ignition to the right. Any ideas anyone?

Can the switch be easily removed and if so do I need to remove petrol tank etc, where does ignition cable run to, down left or right side of bike, can switch be dismantled for inspection and possible repair? Have tried both keys (spare is virtually new) and neither is bent or distorted, so a little baffled as the switch worked normally the first time but would not work after removal and reinsertion.

Any help appreciated, bike is a 2002 F4 750

Tony
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post #2 of 5 (permalink) Old 10-30-2017, 04:53 AM
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Switch Removal from the manual.

Name:  F4 750 Ignition Switch.jpg
Views: 155
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You will have to remove the tank and airbox to get the switch out.

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post #3 of 5 (permalink) Old 10-30-2017, 04:54 AM
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You probably have tried this, but spray a lubricant down the barrel of the switch and work your key gently back and forth. There may be a piece of dirt or other debris blocking the action.

Of course, the switch barrel may have failed.

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'07 Ducati Monster S4Rs, '07 Ducati Monster 695
2010 Harley Davidson Ultra-Classic Electra-glide CVO FLHTCUSEBLK
'63 Honda C100A Cub
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post #4 of 5 (permalink) Old 10-30-2017, 01:48 PM Thread Starter
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Thanks for the postings, have tried the lubrication method to no avail, was rather hoping I might not have to remove tank etc, but looks like no alternative, is the tank removal a long job do you know? Does anyone know if this is a common problem?
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post #5 of 5 (permalink) Old 10-30-2017, 05:02 PM
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It's an uncommon problem you have there.

A locksmith might be able to help if you don't want to remove your tank and airbox.

Removing the tank and airbox is not difficult; although it does present some challenges that could catch you out.
Disconnecting the quick release fittings needs to be done with care. Many people have broken embrittled connectors.
The side undertak panels pull out from the back pins first then slide toward the rear of the bike.
Removing the airbox panels (with the little screws) can release a brass ferrule from the well nuts. That brass ferrule can drop into your intake. DO NOT actuate your throttle until you know you have captured all the parts. If a piece falls it will be sitting on your throttle butterfly valve.
The fuel tank is best removed with little or no fuel in it. A friend can help lift it up so you can disconnect the fuel lines and electrical plug.

There are detailed instructions in the Frame Manual or workshop manual.

I can have those components off my bikes in under 20 minutes as I have done the operation many times. Approach it with care and you should be fine.

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'07 F4 312R, '10 B4 1090RR, '15 B3 800RR
'07 Ducati Monster S4Rs, '07 Ducati Monster 695
2010 Harley Davidson Ultra-Classic Electra-glide CVO FLHTCUSEBLK
'63 Honda C100A Cub
'61 MVA TRA 125
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