Mitox coughing and spluttering

[spudulike]

Thx for all that.

There seems to be only one adjustable screw which doesn't have an obvious screw head only a small V cut into its side.

Does this sound right??

 

Get a photo up as it will help us see what you mean. On most carbs there are two screws close to ach other, the one nearest the cylinnder is always the L or low speed screw.

 

The large screw away from the other two screws is the idle and is always adjustble.

 

There are some carbs that have one screw only and these work by bypassing a regulated amount of air past the throttle valve - the MS171/181 are examples of this type of carb.

[russtobin]

I've had a good look and it seems to be a one screw carb.

I'll take some photos in the morning and post.

Thx again for ongoing support.

[GardenKit]

This is a rotary barrel type carb, a copy of the Walbro WYL.

But unlike most WYL carbs this one does have a High Speed screw that looks unlike any other. It is set at a slight angle in the carb body and is easy to miss, even though quite large and is adjusted with a 'pacman' adjuster.

[spudulike]

This is a rotary barrel type carb, a copy of the Walbro WYL.

But unlike most WYL carbs this one does have a High Speed screw that looks unlike any other. It is set at a slight angle in the carb body and is easy to miss, even though quite large and is adjusted with a 'pacman' adjuster.

 

Beginning to make sense, I know you sell these machines Barrie hence mentioning you earlier.

 

I thought the needle running down the middle of the barrel is usually raised to richen the carb but guess this is a bastardised version for chainsaws. Only ever seen them on strimmers or trimmers!

[GardenKit]

but guess this is a bastardised version for chainsaws. Only ever seen them on strimmers or trimmers!

 

Me too!

The 281MT is a multitool!

[spudulike]

Me too!

The 281MT is a multitool!

 

Oh wooops:001_rolleyes: been a long day and not familiar with the Mitox range, thought it mighty strange:lol:

 

Think I will let you sort this one out:thumbup:

[GardenKit]

 

Think I will let you sort this one out:thumbup:

 

Oh! do I have to? Not particularly fond of them myself:001_rolleyes:

[GardenKit]

I should have mentioned that these machines, being Chinese, have one or two issues. One is that the ethanol in fuel degraded the fuel filters on the earlier machines. The degraded felt travelled up the fuel pipe and clogged the internal gauze, causing your symptoms.

 

I would clean the carb and replace the fuel filter before any tuning, or you will just be compensating. The fuel pipes and carb diaphragms should be done at the same time, the will likely be crazed. Oh, and the tank grommet is very dodgy too, almost certainly perished and leaking. Replace it.

The new materials are better.

[russtobin]

Thx again for that

Have replaced the fuel filter(probably bolting the door after the....)

Will have a go at cleaning the carb and you are right the grommet does leak!

Attaching a couple of photos for confirmation.

[russtobin]

Anyone know the easiest way to strip down this kind of carb?