Short Description
The DL650 has two throttle bodies, one for each cylinder. These throttle bodies meter the air that is delivered to each cylinder for fuel combustion. To ensure smooth operation of the bike’s engine, these throttle bodies must be synchronised so that each cylinder receives the same amount of combustion air for each power stroke.
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5. PREPARATION
The bike’s Suzuki service manual calls for the bike’s air box to be removed before synchronising the throttle bodies. From experience, this has not been found necessary, although it does give easier access to the throttle body take-off pipes for the manometer. Many believe the effort is not worth it. For these notes, the air box is not removed.
It is recommend (but not mandatory) that you fit new spark plugs and a clean air filter (if air box is left in place) to the bike before proceeding with the throttle body synchronisation. See the Owners Manual for fitting these items.
• Remove the bike’s seat (see Owners Manual).
• Remove the left-hand and right-hand black plastic side covers (see Owners Manual).
• Raise the fuel tank (see Owners Manual) and support on its prop.
Note: To remove the black plastic “press studs” use the smallest hex key in the tool kit to press in the centre pin of the stud one click (about 2mm). You should then be able to pull the stud (with pin) straight out. Be careful not to loose the pin.
• Disconnect the IAP sensor hose from its connection on the air box (see fig. 1).
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