Old stihls....

[spudulike]

Depends on which model 024. Most had a shorter stroke but I believe the super had the same stroke but certainly worth checking to see.

 

Sounds about right to me, the crank needs the same stroke otherwise the piston will either clout the top of the cylinder or not make compression!

[predator]

by the looks on ebay the cranks/conrods/crankcase's are all the same

[spudulike]

You have two 024 cranks - 1121 030 0400 and 1121 030 0405, I believe the earlier one has a shorter stroke and the later is also used on the 026 but do your homework and save wasting money.

 

There also apear to be four incarnations of cylinder!

 

Burrell on here, turned down the later 024 cylinder to fit the earlier crank - don't think it was ever "right" though.

[kkma1560]

Spud need your assistance again.....

Only managed to get 024 apart so far.

Stripped and cleaned carb, which got saw running...

But too well-full power while idling!

However then stopped and now won't start again and there appears to be fuel leak. Possibly from the impulse line - is that possible? It seems to be trickling around the hose between carb housing and cylinder.

 

Any ideas would be gratefully received.

[wisecobandit]

Sounds like the rubber inlet manifold has split/holed.

[wisecobandit]

You have two 024 cranks - 1121 030 0400 and 1121 030 0405, I believe the earlier one has a shorter stroke and the later is also used on the 026 but do your homework and save wasting money.

 

There also apear to be four incarnations of cylinder!

 

Burrell on here, turned down the later 024 cylinder to fit the earlier crank - don't think it was ever "right" though.

 

The "standard run" 024's had a 30mm stroke I believe and the super 024 and the 026 had a 32mm stroke.

 

As you say spud I know both Stihl and Mahle made cylinders for the 024. Maybe if they done the same on the 026 that would aquate to the 4 cylinders you mention.

[kkma1560]

Is it easy to replace - does the cylinder have to come off to get at it. And would it be worth replacing impulse/vacuum line at same time?

Thanks

[wisecobandit]

Its definetly worth replacing the impulse line whilst your in there if you do need to replace it for the sake of £3 or so.

 

No cylinder doesn't need to come off to replace the manifold. Its just held onto the cylinder by a "jubilee" type clip.

Basically carb off, remove the 2 metal bits between the carb/manifold, undo the bolts that hold the handle/fuel tank on (theres a few under the white plastic circle/disc covers on the chainside btw) and push the manifold thru the handle casing. Drop the handle away and you can then undo the jubilee clip (and replace the impulse then)

IT sounds more complicated than it is but only a 15 minute job. Takes longer to get the carb off!

 

If you remove the carb and then take out the metal ring in the centre of the rubber manifold, you can stick your finger in the manifold and push it around and inspect for splits and cracks externally on the manifold. Either or means it needs replacing.

 

You can normally

[kkma1560]

Thats great, thank you, will have a go tonight.