Axis Pro 750 Sparkplugs?

[Ronald]

I have an axis pro 750 I use around the yard, after very short use machine starts running very rough.  I've pulled the sparkplug and found it covered with carbon and wet with fuel.  Machine only has 13 hours on it.  What sparkplugs should I use to burn off excess carbon and burn fuel more efficiently?

[mark6227]

Did you add any type of fuel conditioner/octane booster?are you using at least 91 octane?my bighorn ran like that after i put octane booster in cheap 87 gas l,it did not like it,now i use 91 or E free,have you changed the plug to a new one?and have you took it for a long run at or near wot as to seat the rings?which i had to do,run about a mile or 2 going between wide open,take foot off gas let it slow down itself then do it again a couple times,if none of that works gap your plug.002" more giving it a longer spark

[mark6227]

Did you add any type of fuel conditioner/octane booster?are you using at least 91 octane?my bighorn ran like that after i put octane booster in cheap 87 gas l,it did not like it,now i use 91 or E free,have you changed the plug to a new one?and have you took it for a long run at or near wot as to seat the rings?which i had to do,run about a mile or 2 going between wide open,take foot off gas let it slow down itself then do it again a couple times,if none of that works gap your plug.002" more giving it a longer spark,also if its one of those torch plugs cross reference it to an ngk,champion or autolite

[Ronald]

I've been running non ethanol fuel, put a couple of ounces of sea foam a while back? Thanks for the input....

[Jaygyver]

I would find out WHY it's running rich like that. Changing to a hotter plug can make problems in itself. I have zero knowledge on EFI so can't help you there.

If it's still under warranty ask who you bought it from what shop is recommended to work on them if it came from a box store or similar. They -usually- contact a local shop to work on machines they sell.

As far as gas, any newer machine made recently -should- be able to run ethanol -mixed- gas (10% or less usually) at what ever octane that they recommend. If it's not used very often even with 13 hours on it the gas can get stale if it sit's for months between fueling. It wouldn't hurt trying a higher octane as the higher ones have more cleaners in it but if it runs fine on 87/88 octane then it's just throwing money away.

What worked for ME is Sta-Bil gas treatment but I use the -Storage- version year round as some years I use 50+ gal, (mowers, generator, saws, SxS, etc,) and the next year I might use 10 gal. I have always used ethanol fuel and haven't had any issues, at least so far... I have two 14 gal tanks that I use for everything that is run on gas. Another thing to look at is how busy is the gas station you use as a busy one will have the freshest gas compared to a mom and pop off the beaten path.