Suzuki DL650K5 Service Manual page 248

5-34 FUEL SYSTEM AND THROTTLE BODY
• Connect a tachometer and start up the engine.
• Bring the engine rpm to 1 300 rpm by the throttle step screw.
• Check the vacuum of the two cylinders and balance the two
throttle valves with the synchronizing screw 2 on the No.2
throttle body.
NOTE:
* During balancing the throttle valves, always set the engine
rpm at 1 300 rpm, using throttle stop screw.
* After balancing the two valves, set the idle rpm to 1 300 rpm.
"
Avoid drawing dirt into the throttle body while running
the engine without the air cleaner box. Dirt drawn into
the engine will damage the internal engine parts.
NOTE:
Make sure that the throttle lever should have a gap A (between
the throttle lever and throttle lever stopper screw) during syn-
chronization.
% Throttle lever gap A: 0.17 mm (0.007 in)