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Question edited for a lot more clarity. It is a 'Stihl', not a 'still'. Please always state FULL 'make model (what it is)'.
Question moved to model category.
The standard way to test any HT Ignition coil is as follows.
Remove the spark plug and ground it to the cylinder head.
Disconnect the positive lead.
Ground a 12 volt battery - (minus) to the cylinder head.
Touch a positive wire to the positive on the coil and release.
The plug should spark when you REMOVE the positive power.
you have to pull the whole unit apart air gap is important so note the gap on the coil before undoing the old one exploded views Poulan PBV200 Pro Leaf Blower Parts
There is a fuel line kit for the BR 600. Part numbers is:4282 007 1014 - longer one goes from the fuel tank filter towards the primer pump. shorter one, from primer pump to carburetor.
Steps:
Make sure to take out the fuel filter from inside the tank by removing first the rubber grommet (rubber cap with 2 or 3 holes depending on the version of your BR600).
Use a long sturdy wire with the end shaped like a hook: wide enough to hook the fuel line, but narrow enough to fit through the grommet hole.
Unplug all the fuel lines and replace line.
Remember that on some models a.) there is an extra hose to connect to the vent. b.) There are two fuel filters so the unit can pick up fuel from both corners of the fuel tank when fuel is low as the operator tilts the blower side to side when walking.
Put them back together in the reverse order as taking them out. (But you know this already.)
My guesses:
Unless the fuel lines are severely deteriorated (this rarely happens), there is no need to replace them. Since you are suspecting the fuel line, then my guess is that you are experiencing fuel cut-off when operating the machine. There are underlying causes for poor performance of your units. Check for the following:
Plugged vent. Replace.
Cracked primer bulb. Replace.
Plugged fuel filter/pick-up. Water separation on your fuel may have occurred. Water will stick to the foam (outer white, may be ceramic on some models) and rust out the inner filter. Replace.
Your carburetor is messed up. We've had several of the BR 500 and 600 with messed up carburetors, having leaks. This should come up in the first few days of using the machine. Haven't seen it come up later.
A plugged muffler. Is a b14tch to clean. But if cleaning costs would be the same as replacement. Go for replacement.
And lastly, the ignition module. The ignition module may be defective and will cause the erratic running of the engine including random shutdowns specially when hot.The BR 500/600 are notorious for this and the occurrence of effective fixes has been off and on with Stihl. This has to be tested with proper tools.
There are 2 ignition modules that fit that model. 4203 400 1301 and 4203 400 1301. Also check the ignition switch, remove earth cable from ignition module to double check that it isn't a dodgy earth lead. Ignition modules cost around 50 pounds + vat
if the plug is ok and kill switch and wire have been isolated from the ignition unit
and the earth is good for the armature legs on the coil - then yes the ignition module must be replaced and the air gap set to 0.010 "
a fair bit of work involved in replacing coil in one of these units !!!
ps make sure compression and muffler are ok and have a look up the ex port and check rings / piston and bore for any damage before parting with any cash for new coil
and dont be tempted to use stale fuel mix in your blower it can cause a lubrication fault
resulting i damage to piston / rings etc
no points on that model it uses a spark advance. if its running smooth while your driving it and only rough at a stop believe it or not they put out a bulletin about the motor mounts being bad for this condition
Make sure the air-gap between your used blower coil module and the magnets on the Echo's flywheel is about the thickness of a regular business card. That is about .010"-.016". The gap HAS to be present in order for the module to produce the spark.
It's the thickness of a business card.
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