What's on your bench today?

[monkeymoreton]

Managed to get a bargin of second hand cylinder for my 254xp put it all back together to realise crank seals had caused the failure in the first place. Must say theyre a nice easy saw to change them on. Now runs like a trooper

 

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[woody paul]

Got a pioneer 650 on bench which has been barn stored for 20 years, had no spark so took it apart cleaned points no joy still nothing. So pointing towards capacitor any one now were I can get one or any one got one kicking about.

[spudulike]

Got a pioneer 650 on bench which has been barn stored for 20 years, had no spark so took it apart cleaned points no joy still nothing. So pointing towards capacitor any one now were I can get one or any one got one kicking about.

 

Try using one off an old car or any engine using points. A faulty capacitor would cause poor running rather than no spark unless it has gone closed circuit. A test is to measure the resistance one way then swap the probes round and see if you get a kick in the gauge and then it settling.

 

Make sure the points are opening and closing as if they are permanently open or closed, you will get no spark. Measure the resistance across the contacts to see if they are OK.....if this is all done and no spark, the coil is bad:thumbdown:

[woody paul]

Thanks Spud,

Was thinking of fitting any old one and giving it a go. point are opening and closing but will check resistance.

O have check capacitor with a tester and get nothing.

[Richard Thompson]

I've had my husqvarna 450 on the bench for a clean up after cutting a crumbly/dusty old oak, an ms250 for a spark plug lead rebooting but the saw needs a new magneto and a makita saw that needed a new primer bulb

[Gerbutt]

I've got an ms150 that's playing up a bit. It'll be fine one minute and then it'll run rough as though it's far to rich. The air filter is clean and I've had the carb of and apart and cleaned that up, but still the same. Any ideas? Also, sometimes it'll just cut out in the middle of a cut. I've checked the earth and it seems tight?

 

 

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[spudulike]

I've got an ms150 that's playing up a bit. It'll be fine one minute and then it'll run rough as though it's far to rich. The air filter is clean and I've had the carb of and apart and cleaned that up, but still the same. Any ideas? Also, sometimes it'll just cut out in the middle of a cut. I've checked the earth and it seems tight?

 

 

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Possibly a plug/HT issue as the running rich may be a misfire!

[Gerbutt]

A mate has a 150 that's gone through two plugs in a year, they just suddenly stopped working. Maybe mine is breaking down slower, I'll pop a new one in and see. Thanks chap.

 

 

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[spudulike]

Had an MS200 once that acted like it had a limiter on the carb, the centre electrode was loose and bouncing up and down so it wouldn't get over 5krpm!

[bmp01]

Only plug failure I've experienced was recently, with one of those small M10 plugs in an MS211. Ok, so the saw runs reasonably high compression of 195 psi but that's not extortionate and it shouldn't cause a failure anyway. I dissected the plug, ceramic was cracked, nice arc pattern confirmed it was shorting.... see attached pictures.

 

bmp01