MS261C will not start

[PhillH]

Hi all,

I have a 2015 MS261C originally had no spark but that’s because I was not pulling it over quick enough after a new coil. 
 

Now it will not start, could it be the fuel solenoid? How can I test the solenoid?

 

Does anyone have any ideas, anything common I should be looking for?

 

Thank you in advance 

Phill

Edited Saturday at 14:58 by PhillH
Change of issue from spark to fuel

[spudulike]

Have you got the correct coil on it? I have not known a Solenoid to totally fail like this.

[PhillH]

Hi @spudulike I gave L&S engineering the serial number and they gave me the part number for the replacement which i ordered. 
 

It is weird, I have spark and it sounds like it wants to fire on first 1-2 pulls, smoke from exhaust but then there is a change in the noise and no smoke.

 

Tried brake cleaner straight into the bore and it still would not fire

 

Thank you for your support.

[Stubby]

7 hours ago, PhillH said:

Hi @spudulike I gave L&S engineering the serial number and they gave me the part number for the replacement which i ordered. 
 

It is weird, I have spark and it sounds like it wants to fire on first 1-2 pulls, smoke from exhaust but then there is a change in the noise and no smoke.

 

Tried brake cleaner straight into the bore and it still would not fire

 

Thank you for your support.

Sounds like your timing is out . Could the fly wheel key have sheared ?

[PhillH]

Let me check and I will report back, thank you @spudulike

[Stubby]

3 hours ago, PhillH said:

Let me check and I will report back, thank you @spudulike

Or even stubby 😊

[PhillH]

3 hours ago, Stubby said:

Or even stubby 😊

Sorry mate @Stubby

[PhillH]

Ok so here is an update. It was my dad who diagnosed the coil, so I ordered one and fitted it. Found out the MS261 needs to be pulled over fast to get a spark. Still would not run but getting smoke from exhaust and every so often sounded like it wanted to. 
 

Spoke to my dad, “what happened” “it sounded like it was running out of fuel, put fuel in and would not start again” 

 

I have checked the key - all ok

I have refitted the old coil and give it a good pull - it has a spark

Tried to start and still the same, throttle wide open and plenty of smoke on each pull but will not fire.

 

Tried brake cleaner again - no start

 

Disconnected kill switch and still the same

 

Compression feels ok

 

Any ideas anyone? Could it be fuel solenoid? Why not fire of brake cleaner.

 

Been used plenty this year with no issue 

 

 

[woody paul]

29 minutes ago, PhillH said:

Ok so here is an update. It was my dad who diagnosed the coil, so I ordered one and fitted it. Found out the MS261 needs to be pulled over fast to get a spark. Still would not run but getting smoke from exhaust and every so often sounded like it wanted to. 
 

Spoke to my dad, “what happened” “it sounded like it was running out of fuel, put fuel in and would not start again” 

 

I have checked the key - all ok

I have refitted the old coil and give it a good pull - it has a spark

Tried to start and still the same, throttle wide open and plenty of smoke on each pull but will not fire.

 

Tried brake cleaner again - no start

 

Disconnected kill switch and still the same

 

Compression feels ok

 

Any ideas anyone? Could it be fuel solenoid? Why not fire of brake cleaner.

 

Been used plenty this year with no issue 

 

 

Had similar problem with a big husky brush cutter, you have doneexactly the same thing I did. 

Anyway turned out to be stuck piston ring, but it felt like good comprestion when you pulled it. 

Probably worth popping cylinder off and having a look. 

[Dan Maynard]

Do you know what fuel he put in? I'd say start with basics if you haven't already - pop the exhaust off and check the piston for scoring. Also change the plug, could have a crack or other fault.