HT lead, distributor cap and ignition circuit check (6000 Mile (10 000 Km) / 6 Month Service)
1 Clean each HT lead by wiping along its length with a fuel-moistened cloth and inspect it for damage.
2 Note the fitted position of each lead before disconnection.
HT lead connections - OHV engines
HT lead connections - CVH engines
When removing a lead from a spark plug or the HT coil, pull the lead off by its rubber connector.
Pull the HT lead connector - not the lead
3 The socket contacts on the distributor cap should be cleaned if they appear corroded.
Inspect each HT lead end ferrule for corrosion
A smear of petroleum jelly (not grease) applied to the ferrule on the end of the HT lead will help to prevent corrosion.
4 Remove the distributor cap and rotor arm.
5 Examine the rotor arm and inside of the distributor cap . If the contacts are corroded or are excessively burnt, or if the carbon centre contact in the cap is worn away, renew the cap or rotor, as necessary. Check carefully for hairline cracks and signs of arcing. Make sure that the HT leads are reinstalled in their correct firing order.
6 Check that all HT and LT electrical leads are correctly routed and clear of all moving or hot engine components. Ensure that all lead connections are secure and where applicable, protected.