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Posted

My husky has died (my saw not my dog)

 

Started it this morning and it was running fine. Then i ran out of fuel. After i had refueled and tried to start it again nothing happened. It sounds like it isnt even trying to start kind of like it is not compressing but im not sure. I checked the spark plug and then tried to spark it on the block to make sure the plug wasnt knackered, the plug wasnt sparking so i tried a new plug and that wasnt sparking either so i took the side off and cleaned the points on the coil and it started sparking again but it will not start. I dont really know what else to try and i cant really think what would be making it not start.

 

any ideas?

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Posted

Coil sounds shagged for a start, you may also have a seized/scored cylinder if it feels low compression, pull the muffler off to have a look inside

 

 

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Posted

After pulling the saw over on choke, was the spark plug wet or dry?

 

If it is dry, even after 10-15 pulls, the issue is with the carb/fuel system, if it is wet then the fuel system is probably OK but do turn the saw upside down and pull it over so you clear any flooded and puddled fuel from the lower crankcase.

 

The spark sounds a little strange, I recently had an ignition module fail on a 372 - pretty uncommon for these SEM units.

 

One thing to do is to make sure the coil is damn close to the flywheel - I set this with a business card and that works for me.

 

Try a different spark plug but it isn't often this is the issue.

 

If you get stuck and need help, PM me.

Posted

thanks for the advice spud,

 

I dried my spark plug today and then pulled it ten times on choke and my plug was wet again after. Tried adjusting my coil distance to card width but still no start, can you think of anything else it could be??

Posted
thanks for the advice spud,

 

I dried my spark plug today and then pulled it ten times on choke and my plug was wet again after. Tried adjusting my coil distance to card width but still no start, can you think of anything else it could be??

 

HT lead could be loose or broken, had that happen before, magnets may have lost some polarity strength

 

 

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Posted

Put a squirt of fuel directly down the plug hole and put the plug back in then pull it over and it should run at least for a few seconds if it is firing at the right point. Warming the plug on the gas ring or with a blow lamp before you put it back in can give it a bit more chance as well.

Posted

Right, you have fuel, go back and try the spark again, make sure you get a nice fat spark, get an old plug, open the electrode right out say 3-4mm and pull it over hard and see if you still get a fat spark - if you don't, chances are the coil has failed.

 

Other than this, the saw may have seized - try taking off the muffler and looking at the piston to make sure the piston isn't scored,

 

You could also try a compression check if you can get hold of a gauge - any self respecting car mechanic wil have one but try the Gunson one if possible.

 

An engine needs spark fuel and compression - life isn't quite that simple but it isn't far off in theory.

 

If you have checked all the above - heat the plug up with a plumbers lamp and fit it back and pull it over with no decomp valve, no choke but DO use the fast idle setting (choke pulled out then pushed in)

 

If that doesn't work - send it in:thumbup:

Posted
Not common but more common than coil failure is the on/off switch itself failing.

 

Usually that means you cant turn it off but it will run ok .:001_smile:

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