JLG X20JP - X600AJ Service Manual - Manual (Page 73)

SECTION 3 - CHASSIS & TURNTABLE
3121623 – JLG Lift – 3-49
SPARK TEST
GASOLINE IS HIGHLY FLAMMABLE AND EXPLOSIVE. YOU CAN
BE BURNED OR SERIOUSLY INJURED WHEN HANDLING FUEL.
KEEP HEAT, SPARKS AND FLAME AWAY. HANDLE FUEL ONLY
OUTDOORS. WIPE UP SPILLS IMMEDIATELY.
DO NOT OPERATE THE STARTER MOTOR FOR MORE THAN 5
SECONDS AT ONE TRY. IF STABLE COMPRESSION IS NOT
OBTAINED WITHIN 5 SECONDS, STOP THE STARTER MOTOR AND
WAIT 10-20 SECONDS TO ALLOW THE STARTER MOTOR TO
COOL, AND REPEAT THE OPERATION AGAIN.
1. Loosen the carburetor drain screw to drain the car-
buretor througly.
2. Remove the spark plug cap from the spark plug.
3. Remove the spark plug from the cylinder.
4. Crank the engine several times to expel unburnt
gas.
5. Attach the spark plug cap to the spark plug.
6. Ground negative (-) electrode (i. e. threaded part) of
the spark plug against the cylinder side head cover
bolt.
With recoil starter type:
Pull the recoil starter to check whether sparks jump
across the electrodes.
With starter motor type:
Turn the combination switch to the "START" position
to check whether sparks jump across the elec-
trodes.