Suzuki DF 25, Service Manual, Page: 33 / 148

2-12 PERIODIC MAINTENANCE
ADJUSTMENT
If engine idle speed is out of specification, adjust engine speed.
Turn the idle adjustment screw
A
clockwise to increase idle
speed or counterclockwise to decrease idle speed.
CARBURETOR
Inspect the body, the float chamber, the lever, the linkage, the
connector and the fuel inlet.
If crack or other damage is found, replace.
IGNITION TIMING
NOTE:
Before checking the ignition timing, make sure that the idle
speed is adjusted within the specification.
1. Start and warm up the engine.
2. Attach the timing light cord to the spark plug high-tension
cord.

09930-76420: Timing light
3. Check the ignition timing while operating the engine at the
idling speed.
Ignition timing: Approx. BTDC 30°
Inspect initially after 20 hours (1 month) and every 100
hours (6 months) thereafter.
Inspect every 200 hours (12 months).