Chainsaw Problem

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Originally Posted by Redback

Thanks John,

Only mod done to the exhaust was the spark arrestor was taken off, otherwise the exhaust is good and it's original shape.

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I was not referring to modifications, but to a buildup of carbon causing a change in the shape of the port opening into the cylinder.

John

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Originally Posted by JDNSW

I was not referring to modifications, but to a buildup of carbon causing a change in the shape of the port opening into the cylinder.

John

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Yeah sorry, it's clean and in good shape, no build up at all.

Baz.

I think you need to target the mixture. Mix up a batch that's exactly right with fresh fuel.

The gallon I mixed up must be over a year old now.. still starts with the aforementioned fiddling with the choke.

Regards
Max P

a mate of mine has the 446 ifrom memory, buys the oem oil and mixes it to the recommended ratio.....no problems to date and he has had it for six months or so.

a standard start up proceedure for chansaws and choke on, three or so pulls, when the chainsaw splutters like its about to start, choke in and she should start on high idle

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Originally Posted by Tusker

I think you need to target the mixture. Mix up a batch that's exactly right with fresh fuel.

The gallon I mixed up must be over a year old now.. still starts with the aforementioned fiddling with the choke.

Regards
Max P

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It is starting at the moment, i made up a new batch the other day, i'm going to do another batch a little leaner to see if it makes a difference.

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Originally Posted by weeds

a mate of mine has the 446 ifrom memory, buys the oem oil and mixes it to the recommended ratio.....no problems to date and he has had it for six months or so.

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I have been using the Shindawa oil and i use premium ULP, not standard ULP, i figured it may be better.

Baz.

Quote:

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Originally Posted by weeds

a standard start up proceedure for chansaws and choke on, three or so pulls, when the chainsaw splutters like its about to start, choke in and she should start on high idle

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Yep have been doing that, the thing is the last time it wouldn't start i changed the plug, now by rights it should of at least showed a sign of starting if it was the fuel that fouled the plug, am i right in this assumption:confused:

Baz.

With my whipper snipper and petrol blower I have found that when they have been sitting more than a couple of days the oil seems to come out of the fuel and settle so that when they do start they are very smokie - maybe the same is happening and the plug cannot handle the extreme oily mixture - simple suggestion is to shake the chainsaw up before use or drain out the fuel after use and only put in before each cold start.

Garry

assuming from the prior discussions that the fuel mix is sorted, if you still continue to have problems, ignition modules can have a periodic failures (eg. work when cold and not when hot) and also the kill switch wiring and plug wiring can get pinched/broken on assembly and then give an intermittent/sometime fault.

hope it helps - Laurie

50:1, but decent oil

I leave my fuel in the tank between uses and have NEVER had a problem