Spark Plug - Benelli TNT 25 Maintenance Manual

Spark Plug

Spark Plug condition Inspection
●Disassemble the spark plug (see the spark plug disassembly section)
●Visually check the spark plug
○If the central electrode [A] and/or side electrode [B] of spark
plug is/are corroded or damaged, or the insulator terminal [C] is
broken, replace the spark plug
★If the spark plug is dirty or there are carbon deposits on the spark
plug, replace the spark plug
○Measure the gap [D] with a wire gauge
○If the clearance is incorrect, replace the spark plug
standard spark plug gap: 0.6-0.7 mm
○Use the standard spark plugs or spark plugs in the same grade
Spark plug type: CR8E
Checking
●Start the engine according to the following conditions
First Checking
Condition:
Drive device → shift to first gear
Clutch handle → apply
Side stand → up
○Turn on the ignition switch and press the start button
○If the start-up system circuit is normal, the starter motor will not rotate
●If the engine starts, check the starter lockout switch, side stand switch , gear switch and relay box
●If the parts are all in good condition, replace the ECU • then start the engine according to the following conditions
Second Checking
Condition:
Gear → neutral
Clutch handle → release
Side stand → down
○Turn on the ignition switch and press the start button
○Then the starter motor starts if the start-up system circuit is normal
★If the starter motor does not start, check the start switch, gear switch and relay box
★If the parts are all in good condition, replace the electronic control unit
Third Checking
●After carrying out the following operations, check whether the engine can be safely stopped
●Run the engine according to the following conditions
Condition:
Gear → first gear
Clutch handle → release
Side stand → up
●If drop the side stand , the engine will flame out
★If any one does not flame out, check the gear switch, start switch, side stand switch
★If the parts are all in good condition, replace the electronic control unit
7-18
and relay box