What's on your bench today?

[Johny Walker]

this, requiring a new carb ,

[WoodED]

ive got a mac335 thatisnt seized but wont start, a fs120 strimmer that need putting back together (but i dont remember how) and a bg85 blower which starts and ticks over but diesas soon as u hit the throttle

[Megatron]

OEM piston - no, used aftermarket after consulting the customer and going through the prices - tested the old piston for steel inserts and found no steel present - wouldn't Stihl just increase the aluminium thickness to increase strength and the aluminium would conduct heat more efficiently?

 

Limiter caps are off - the saw seized so it is important that I know where the tune is, once I have reset the mix, they will be replaced. The saw was set at 3/4 on the idle and 1/4 on the H screw with caps removed, the rear filter cover says H=1/2 L=1/4

 

Having very roughly got the saw started, the L is at 3/4 and the H at 1 turn, I will do a tune before the saw goes back to use. The carb is a tillotson of a considerable size:thumbup:

 

The damage on the saw was almost definitely caused by the H setting being too lean, possibly by removal of the caps and setting to the settings on the cover - I will leave this on the rich setting to give the piston a chance to run in especially baring in mind the sort of work it will do but will rely on my tach to do the final tune.

 

Happy so far:thumbup:

 

I have never tried with magnets on an 088/MS880 piston or cut a piston in half but the info came from a good source. Perhaps ask on Arboristsite?

 

What model Tillotson carb does the saw have?

[spudulike]

I have never tried with magnets on an 088/MS880 piston or cut a piston in half but the info came from a good source. Perhaps ask on Arboristsite?

 

What model Tillotson carb does the saw have?

 

Not sure - didn't take note and it is back on the saw now, the IPL says HT12E and it looks about right to the one fitted. One big carb compared to the MS200T one I am doing at the moment.

[spudulike]

Just picked up the new muffler for the MS200T I have on the bench - job list includes carb clean and tune, pressure check and fit the new exhaust. Stripped it down as it makes pressure testing far easier - pretty dirty state....it isn't now:001_rolleyes:

 

Compression check is a healthy 150psi, I have had the recoil apart as it had a nasty creaking noise - all good now. Cleaned all the grot off - passed the pressure check, just need to reassemble and clean the carb then a final tach.

 

One important point all the MS200Ts I get in have NO chain catchers - please replace these if you have a saw without one, if the chain comes off or snaps, it may save you a trip to A&E plus they only cost a couple of quid:001_rolleyes:

 

This saw will be fitted with a new one before it goes out!

[Matthew Arnold]

Got a Stihl MS260 which died on us this morning. The fuel smelt a bit funny this morning (not the usual petrol smell) but i only noticed it after the saw wouldn't start. Asked one of our apprentices as he did the petrol run this morning. We have 3 pumps in the yard, one for deisel, petrol and gasoil. He had put gasoil (normally used in generators) in the combi can. So we have 5 litres of gasoil and 2 stroke oil mix to get rid of. Going to strip the saw tomorrow morning to allow the oil to vapourise and drain the tank. How the apprentice got the Gasoil and Petrol nozzles mixed up i dunno.

[spudulike]

Right - rebuilt the clutch cover with new plastic, the build up off chips and oil had broken the leaf spring but have renewed this.

 

Started work on the carb, full strip and ultrasonic clean, noticed the diaphragm spacer was in the wrong position, rebuillt the carb and have some major running issues, have swapped the carb for a known good one and the carb is the problem - poor idle, soaring up to fast revs and then dying completely - I have a theory of what it is but time will tell!

[josharb87]

Great thread Spud!

 

What do you (or Megatron) reckon to this, shipped my 880 over from the uk and changed to Aspen without re-tuning, a fair few tankfulls have been through her now, just a bit paranoid, i think its ok, a touch rich perhaps, but acceptable (?)

And its got the green airfilter, is it worth changing to the black one?

 

[Cut4fun]

Taken a 2171 crankcase out of a orange husky tank, handle and covers and putting it back to a 2171. Instead of a 2171 that looks like a 372. Going to use the husky stuff to put another 372 together with.

[High Scale]

Spud, how much does the piston cost for the 254?