Chainsaw cuts out if not revved

[MrHairy]

It's 10 years old man! sell it and treat yourself to a new one!

Ty:lol:

 

It may be 10 years old, but it's been well looked after, and had little use.

 

I bought a new ms170 to use in the mean time, but I need a top handle saw and can't afford a new decent one of them yet.

 

I've no idea what these limiters are like...pic????...in the past I've used a piece of hacksaw blade to cut the plastic and pliers to pick them off bit by bit.(on other carbs not this one)

 

I'll post some pics in a short while.

 

Thanks, Glen

Edited September 7, 2014 by MrHairy

[MrHairy]

Here's a few pictures of the carb and surrounding area.

Chainsaw Pics - Photobucket

[wisecobandit]

Thing I missed first time around which should of picked up on.

You say you cleaned the carb but haven't removed the limiters? You need to cut them off (sometimes you can just turn the adjuster and they will snap) but im unsure of what the limiters are like on a mokita.

You need to get those screws out and squirt cleaner down them etc, You may have cleaned the carb body as such internally but until you have removed those 2 adjustment screws and cleaned them the low idle circuit cant be classed as being cleaned properly and could be your issue.

[spudulike]

Thing I missed first time around which should of picked up on.

You say you cleaned the carb but haven't removed the limiters? You need to cut them off (sometimes you can just turn the adjuster and they will snap) but im unsure of what the limiters are like on a mokita.

You need to get those screws out and squirt cleaner down them etc, You may have cleaned the carb body as such internally but until you have removed those 2 adjustment screws and cleaned them the low idle circuit cant be classed as being cleaned properly and could be your issue.

 

From the photos, it looks like they are plugged with a welch type plug - not sure if conventional screws will be found under these plugs (the two golden coloured ones) but it may well be worth popping one out and seeing what lies beneath:scared1:

[mikerecike]

I think we might be missing the critical photo -looking down that white plastic tube - or some from that side at least

[MrHairy]

I think we might be missing the critical photo -looking down that white plastic tube - or some from that side at least

 

The white tube thing controls the choke, the choke switch screws into the end when the carb is fitted.

 

 

Thing I missed first time around which should of picked up on.

You say you cleaned the carb but haven't removed the limiters? You need to cut them off (sometimes you can just turn the adjuster and they will snap) but im unsure of what the limiters are like on a mokita.

You need to get those screws out and squirt cleaner down them etc, You may have cleaned the carb body as such internally but until you have removed those 2 adjustment screws and cleaned them the low idle circuit cant be classed as being cleaned properly and could be your issue.

 

OK thanks, I'll have a go at removing the gold cap things.

Edited September 8, 2014 by MrHairy

[MrHairy]

From the photos, it looks like they are plugged with a welch type plug - not sure if conventional screws will be found under these plugs (the two golden coloured ones) but it may well be worth popping one out and seeing what lies beneath:scared1:

 

I managaed to remove a cap and there is a screw head underneath

[wisecobandit]

Make sure you take note of the settings (ie turn each screw in and count exactly how much you turn them before they softly ground out) write it down and then remove them and strip the carb again before squirting cleaner thru. Also I always tend to have a quick look at the ends of the screws to make sure they are in good nick and dirt free.

[MrHairy]

Make sure you take note of the settings (ie turn each screw in and count exactly how much you turn them before they softly ground out) write it down and then remove them and strip the carb again before squirting cleaner thru. Also I always tend to have a quick look at the ends of the screws to make sure they are in good nick and dirt free.

 

OK, will do that. Thanks for the tip.

 

Went to get some more carb cleaner today, but they'd sold out, and said next week. I ordered 3 lots of parts for this so far, and they all took a week as well.

I quite enjoy taking things apart and fixing them, but all the waiting for things is frustrating. The joys of living on an island I suppose.

[wisecobandit]

Toolstation is where I get my carb cleaner and its pretty good stuff. I buy 6 or 12 at a time. Always end up getting a few other odd bits and when you spend £10 anyway you get free delivery.