KennyPete
ArboristSite Operative
I seem to be having an ignition problem with my 031av. Saw starts fine, runs good for about 5 minutes, then dies. Will not start again until it cools off. I disassembled it, figuring I needed to switch it over to an electronic ignition module. I pulled the flywheel and discovered that the condenser was loose and there was a small bare spot on the kill wire. I cleaned everything, secured the condenser, repaired the bare wire, and put the saw back together, hoping that would fix the issue - no such luck. Same thing - runs GREAT when cold, as soon as it heats up it dies.
On another thread here, I came across this
"Problems with the ignition coil can make an engine impossible to start when warm (or even stop running when it warms up), apparently this happens on motorbike engines quite often and is caused by a break in the HT coil.
A carbon track forms inside the coil where the wire is broken. When the engine is cold the carbon track has a low resistance and it conducts well enough so the spark is strong enough to start the engine, when the engine is warmer the track resistance is greater and the spark less strong. This problem gets worse over time as the carbon track gets bigger and bigger, the only remedy is to change the coil or electronic ignition module."
Is there a way I can repair this line in the coil? Would it be as simple as just replacing the spark plug wire, and can that be changed? I havent knocked the saw apart again yet to look in to it. Thanks in advance for your help.
TL/DR
Disassembled and cleaned the saw
Cleaned the carb
Replaced the plug
Pulled the flywheel, secured the loose condenser, cleaned & set the points, and reassembled.
I had a small bare spot on the kill wire that I fixed with adhesive heat shrink
Problem seems to be a carbon track in the coil, though no marks on the plug
On another thread here, I came across this
"Problems with the ignition coil can make an engine impossible to start when warm (or even stop running when it warms up), apparently this happens on motorbike engines quite often and is caused by a break in the HT coil.
A carbon track forms inside the coil where the wire is broken. When the engine is cold the carbon track has a low resistance and it conducts well enough so the spark is strong enough to start the engine, when the engine is warmer the track resistance is greater and the spark less strong. This problem gets worse over time as the carbon track gets bigger and bigger, the only remedy is to change the coil or electronic ignition module."
Is there a way I can repair this line in the coil? Would it be as simple as just replacing the spark plug wire, and can that be changed? I havent knocked the saw apart again yet to look in to it. Thanks in advance for your help.
TL/DR
Disassembled and cleaned the saw
Cleaned the carb
Replaced the plug
Pulled the flywheel, secured the loose condenser, cleaned & set the points, and reassembled.
I had a small bare spot on the kill wire that I fixed with adhesive heat shrink
Problem seems to be a carbon track in the coil, though no marks on the plug