Small Engine Problems? Ask an Engine Mechanic for Answers ASAP
Hello and welcome to JustAnswer!This is James, I'm an Engineer with over 10 years of experience, and I'll be assisting you today.
Sorry to hear your appliance is having issues, please stand by while I find the answer for you, this is not an immediate service however I will try and respond as soon as possible.
The lances are not really serviceable parts the only way to unblock them are to bath the lance in hot soap water and then use compressed air to push the debris through.