Re: Could somebody tell me something about the honda 7.5 cdi 4 stroke bf75l wont st
Things to check before or instead of using starting fluid.
1) Depending on the year, there is a filter in the fuel pump (under the big shiny screw) that is quite small and in this era of ethanol, plugs easily. Also, depending on year, there is fuel filter inline between the fuel pump and the carb... replace it. If your year HONDA does not have this filter, buy one and install it. Be careful to observe the arrow for fuel flow direction.
2) You should probably dump any old fuel and clean out the tank of the obvious crap.
3) Cheap insurance would be to replace the hose to the tank/primer bulb. Some "replacement" ones sold several years ago were not safe with ethanol... the whole inner liner is solvent, i.e. dissolves in ethanol. A HUGE mess results from this...Believe me!
With clean fuel, clean filters and a new line/bulb... squeeze the primer bulb 5 to 6 times. It should be initially easy to squeeze and then get hard. If this happens, so far, so good. Now find and open the knurled knob on the back/bottom of the carb. Fuel should run out of the drain hose in the bottom of the carb. Squeeze primer bulb, and see more fresh fuel run out. Be responsible/safe with this drained out fuel.
If fuel does not run out, then disconnect the hose (actually small diameter tubing) between the fuel pump and the carb and squeeze the bulb. If fuel comes out now, then the carb needs a rebuild since, as a minimum, the float valve is stuck.
If all is OK with the fuel, the starting procedure is:
1) put engine in Neutral
2) more throttle to "start" position
3) Pull the choke out ( black knob on lower right front)
4) Squeeze primer bulb until it gets firm
Pull the starter cord by... slowly pull until you feel resistance, then sharply pull to start. There is an art to starting a manually choked engine. Unless the engine is warm or its a very warm day, pull choke fully out, pull cord once or twice. Then push the choke in to about 1/2 choke and pull several times until it starts. If it does not start on the 4th or 5th pull, STOP and open the choke all the way (push in) and wait until the excess fuel in the engine evaporates ( 5 to ten min wait). Start at the beginning.
If you have to do this process more than twice, there is something wrong with the engine. HONDAs of this type are very easy to start if they are "up to snuff"
I've had engines that have sat for 6 months winterized, and then started on the second pull.