Vespa Primavera 50 - Service manual > Spark plug

• Position the vehicle on the stand
• Remove the spark plug external inspection door by undoing the indicated screw

• Disconnect the spark plug H.V. cable cap.

• Unscrew the spark plug using the wrench supplied.

 

• Check the conditions of the spark plug, make sure the insulation is intact, that the electrodes are not excessively worn or sooty, the conditions of the washer, and measure the distance between the electrodes using the appropriate feeler gauge.
• In case of anomaly (as described before), replace the spark plug with another one of the recommended type.

• Fit the spark plug with the correct inclination and manually screw it all the way down, then use the special spanner to tighten it.
• Fit the cap on the spark plug as far as it will go.
• Carry out refit operations.

CAUTION

THE SPARK PLUG MUST BE REMOVED WHEN THE ENGINE IS COLD. CHECK AND REPLACE THE SPARK PLUG AS INDICATED IN THE SCHEDULED MAINTENANCE TABLE. USING NON-COMPLYING IGNITION CONTROL UNITS OR SPARK PLUGS OTHER THAN THOSE PRESCRIBED MAY SERIOUSLY DAMAGE THE ENGINE.

Characteristic

Electrode gap
0.7 to 0.8 mm

Spark plug
NGK CR8EB

Locking torques (N*m)
Spark plug tightening 10 to 12

Hub oil

Check

Check oil level with the vehicle placed on the centre stand and on a flat surface.

Undo the indicated screw and check for oil by inserting a shank/plug. The level should be just under the lower margin of the fill hole.

In case of oil leakage, carefully clean the transmission crankcase with a cloth.

Replacement

• Remove the oil level check and filler screw.

• Prepare an adequately sized container.
• Unscrew the oil drainage plug and drain out all the oil.

• Screw in the drainage cap again and fill the hub with the prescribed oil.

Recommended products
AGIP GEAR SAE 80W-90 Lubricant for gearboxes and transmissions.

API GL-4

Characteristic

Hub oil
270 cm³

Locking torques (N*m)
Hub oil drain screw 15 to 17

Air filter

• Remove the helmet compartment.
• Disconnect the air intake pipe from the filter box.

• Undo the six screws and remove the air-box cover.

• To clean the filtering element proceed as follows: remove the paper filtering element, blast with compressed air and then refit it.
• Make sure the filtering element is in the correct position.
• Check that the air passage sections are not damaged or deformed.
• Check the correct sealing of the coupling between the filter housing and the cover.

CAUTION

IF THE VEHICLE IS USED ON DUSTY ROADS IT IS NECESSARY TO CARRY OUT MAINTENANCE CHECKS OF THE AIR FILTER MORE OFTEN TO AVOID DAMAGING THE ENGINE.

See also: