OK... there like 1000 'no start' posts on various 2 cycles.. and I've read most, and still stumped... Here goes.
FS55 trimmer... was working fine this summer, and then refused to start after being set aside a couple weeks. Here's what I did:
A) Symptom -- no 'kicking' even with starting fluid.
B) Check spark... nada. Switch worked, so replaced coil (stihl part), gapped to .010" , and now got good spark. New plug as well
C) Check compression -- got 120psi. Inspected piston through exhaust port... no scoring, rings looked good.
D) Checked flywheel... pulled, looked good, in keyed area, no looseness, put back together.
E) Tried starting with a bit of gas in the spark plug hole; no kicking over.
F) Starter fluid may give a one or two kicks, but nothing near running. Seems like a backfire now and then, but mostly nothing.
So... got spark, compression, and nothing. I'd expect a little running with a squirt of fued or starter fluid directly down the intake, but nothing.
Haven't messed with the carb, but doesn't seem like a fuel issue.
And yes, checked the spark arrestor... not bad but cleaned and reinstalled.
I'm about end of my options.
I've even tried starting with a drill connected to the starter wheel (jury rigged but worked... nothing worked ... no 'catching').
Help..!! Any ideas? This machine has been consistent running for the 10 or so years I had it.... now nothing..
FS55 trimmer... was working fine this summer, and then refused to start after being set aside a couple weeks. Here's what I did:
A) Symptom -- no 'kicking' even with starting fluid.
B) Check spark... nada. Switch worked, so replaced coil (stihl part), gapped to .010" , and now got good spark. New plug as well
C) Check compression -- got 120psi. Inspected piston through exhaust port... no scoring, rings looked good.
D) Checked flywheel... pulled, looked good, in keyed area, no looseness, put back together.
E) Tried starting with a bit of gas in the spark plug hole; no kicking over.
F) Starter fluid may give a one or two kicks, but nothing near running. Seems like a backfire now and then, but mostly nothing.
So... got spark, compression, and nothing. I'd expect a little running with a squirt of fued or starter fluid directly down the intake, but nothing.
Haven't messed with the carb, but doesn't seem like a fuel issue.
And yes, checked the spark arrestor... not bad but cleaned and reinstalled.
I'm about end of my options.
I've even tried starting with a drill connected to the starter wheel (jury rigged but worked... nothing worked ... no 'catching').
Help..!! Any ideas? This machine has been consistent running for the 10 or so years I had it.... now nothing..