2005 Suzuki Boulevard C90 - Answered Questions & Fixed issues

Your starter button is a two position switch. The lights are supposed to go dim when the button is pushed halfway in. When pushed in all the way it should activate the starter solenoid. The starter solenoid is located under the seat next to the battery. You can follow the positive battery cable directly to the starter solenoid. If you push the starter button and the starter solenoid clicks, then the starter button is good. If the you unplug the two smaller wires going to the starter solenoid and connect a voltage meter to the main harness leads , the needle should jump whenever you press the starter button. If it does not clean the button contacts or replace the right switch assembly. If the starter button is good then take a jumper wire and short across the two battery cables on the starter solenoid. This will put power directly to the the starter. If the starter works now replace the starter solenoid. If your starter still does not work, try holding the starter button and tapping on the starter with a plastic hammer. If the starter works now then you probably need to replace the starter brushes. If anything else is wrong with the starter you will need to replace the assembly as the dealer will usually only offer the starter brushes for repair purpose.

Main fuse location

• could be the stator or voltage regulator
• see also
• https://www.fixya.com/motorcycles/t25074788-2005_suzuki_c90t_bike_not_charging

no. At idle teh alternator is probably putting out less volts, At higher idle you should get higher voltage charging the battery, lights should get brighter.

Try putting the bike in gear when this happens and rock it until you reposition the pistons, then hit your starter and see what happens. ( If you are up against the compression stroke, then you wait a few seconds it gives it time to bleed down the compression.)

A SWITCH NR THE REAR BRAKE LEVER, NEEDS TAKING OFF, BUT COULD BE IN NEED OF A CLEAN AND A WIGLE WITH WD40

is side stand down??

make sure the terminls on battery are secure.

SHOULD BE A DRAIN BOLD IN THE BOTTOM AND WILL NEED TO PUMP THE FORKS WHEN EMPTYING.

the spruage bearing mabe bad

with engine running you should be able to check alternator output on the battery. put your leads on the positive and negative post and see if it reads more then 12 volts DC. usually charges at 13-13.5 volts

Check your rear brake master. Is there fluid in the reservoir? Have you tried bleeding the system? Does the operation of the pedal actually make everything operate as it should....is it all connected as it should be? Might require a strip down to replace seals etc. Sorry if none of this helps.

I use NGK iridium plugs. The bike runs very smooth at a low idle and the throttle response is spot on. DPR7EIX-9 is the plug number. Remember to take off the spark plug caps before installing as the wires only connect to uncapped plugs. Good luck!

in the right side front engine cover at the top.

on right hand side, lower engine cover there is a sight glass for the oil level just behind that the chrome cover is two pieces the rear is removed and the fill is located

there should be a dipstick on it ,ck on youtube l

A C90 is not a water cooled engine. It is a design that uses air and oil to cool the engine. There is no conventional radiator or coolant on this model. The finned cooler you see on the front of the bike is an oil cooler.

check to see if the clutch cable is stuck.

It sounds the stand switch still engaged even if the stand is fully up. Spray wd40 over the stand spring and switch

Under chrome cover on the right side beside the oil topping knob