Ms391 and water

[GardenKit]

A hot engine suddenly quenched can cause the pot to shrink quickly. This can distort or crack the pot, and maybe pinch piston momentarily, bending the con rod. The engine need not actually stop, but the damage may be done.

 

The engine can stop under water without ingesting water through the carb

if the the air filter is good. It will just suffocate the engine as the filter blocks.

[Acg128]

Spuds a top bloke

[spudulike]

Spuds a top bloke

 

Love you too but Barrie does have a point, if the saw was running for a while and then plunged in to water, it will change the properties of the cylinder pretty quickly!

 

The good bit of all this is the saw ran after the dunking meaning that no fatal immediate damage was done - I guess there could be some damage that didn't come out straight away.

 

Dry it out, get fresh fuel and oil in it and possibly clear the carb out and see how it goes - if the rod is bent then the cylinder will wear quickly and compression will fall off fast! The saw will also be hard to pull over even with the plug out - is this the case......???

 

Let us know how it goes

[WorcsWuss]

On the basis that the saw was presumably down to idle by the time it hit the water, at idle it would presumably take very little to stall the engine.

If the hot and expanded pot was suddenly cooled causing it to contract onto the piston enough to bend the conrod, surely it would stall it as well?

So on the basis that it was still running when it was pulled out of the water you'd hope that the guts of it would still be ok.

[spudulike]

We shall see......keep us posted on the patients health:thumbup:

[GardenKit]

If it actually submerged there is no way it was running when it was pulled out. Without air it would have stalled.

If it was still running then it did not go under so my previous comments re quenching may not be relevant in this case.

The rattle is therfore a mystery./

[Rich2484]

The rattle could be anything at this stage.

 

Could be something broken from the impact gett caught up in flywheel or clutch side. Hade. This before with a screw that was on the flywheel on a hedgecutter. Rattled it way down and stuck near the magnets.

[Aaron]

All is well! Dried saw out in airing cupboard following spuds advice and she started fine and ticked over for while no problem. Thanks for all the input every one!!

 

Aaron

 

 

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[spudulike]

Whohheeyy - all good news tonight - the knocking noise must have been your knees:lol:

 

Glad it is running OK.....and your towels now smell of chainsaw fuel:001_rolleyes:

[Rich2484]

Whohheeyy - all good news tonight - the knocking noise must have been your knees:lol:

 

Glad it is running OK.....and your towels now smell of chainsaw fuel:001_rolleyes:

 

Unless its aspen. Then they will smell of Somerset and fresh country air.

 

Isn't that right Barrie.