>Tuning every 10,000 KM, meaning cleaning of plugs. Replace conventional plugs every 30,000 KM depending upon their condition.
>clean air filter every month from petrol pump.
>Throttle body service when idling is uneven.
>Tappet adjustment when tappets make thup thup sound. Most mistries at 3S are not experienced enough to do good tappet adjustment and will overtighten the tappets. Do it only when needed and only from a recognized ustaad.