Theres no spark and bike wont start

well you cant damage it by doing that but if you put too much n and didnt shake it well it will settle at the bottom of the fuel tank and fill the carburettor up with oil as oil is heavier than petrol.why are you not using the oil tank and oil pump fitted to the bike ?best thing to do is put a new spark plug in it turn the fuel tap off roci the bike bacwards and firwards to mix the oil and fuel in the tank,and drain the carburettor by undoing the 14mm nut in the centre of the bottom of the carb,then turn the fuel back on and try and start it up.

First thing to check would be the spark plug

put compression gauge in spark plug hole and if its less than 100psi then you need a new oversized piston and rings ! gaskets also !!!

Replace the spark plug to new one they rarely come good or be reliable once fouled shouldn't need to clean carb but if were mine I would clean it anyway
regards Jamie

I have a flymo 430 petrol strimmer and cannot start it. ive cleaned the filter, put in new plug it went first time and then stopped and wont start again the plug seems to get wet all the time any ideas

Check the spark plug gaps and set to 25thou or 0.9mm.
Hope that helps

If it is brand new, sounds like you should return it for the retailer to have repaired.

I’m happy to assist further over the phone at https://www.6ya.com/expert/rolandw_c013176d62ee17ae

check to see if it is firingif it`s not firing it`s probably the coiland if it`s firing check to see if it`s easier to crank over than usual if so then there is no compression in which case u may have a big problem but i doubt that`s the problem 9 times out of ten when a bike wont start it`s the fire or maybe u forgot to turn the gas off and it`s flooded if u want to know if it`s flooded take out the spark pluge put a lighter by the hole and crank it over and u might be able to dry it out like that too

Buy some starting fluid and spray some in the carb or air cleaner intake port, if the machine is flooding do not choke while using the starting fluid, make sure you do not have too much oil in the mowwer.

Hi there, try this sometimes the stand switch can make the bike not work if has got rusted at the back.and check or replace the coil., then check if you are getting a spark from the plug by putting the spark plug on top of the head. The next thing is if the bike turns over but not fire up, you need to strip down carb and clean jets, also check petrol value under the tank If you have a book it will go through this step by step. good luck.