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Starting a reluctant hedgetrimmer

 
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JB



Joined: 08 Jun 2005
Posts: 7745
Location: 91 N
PostPosted: Wed May 31, 17 3:33 pm    Post subject: Starting a reluctant hedgetrimmer  Reply with quote    

OK it wont start. A squirt of lighter fuel in the cylinder gets it to fire sdo I obviously have, spark and compression. SO what's next to try?

sean
Downsizer Moderator


Joined: 28 Oct 2004
Posts: 41702
Location: North Devon
PostPosted: Wed May 31, 17 3:48 pm    Post subject: Reply with quote    

Fresh fuel? If it's been hanging around for too long that's a problem.

dpack



Joined: 02 Jul 2005
Posts: 32953
Location: yes
PostPosted: Wed May 31, 17 8:18 pm    Post subject: Reply with quote    

easy start spray down the air intake can be effective with older engines

clean air filter
clean fuel tank, pipe and carb ( a bit of muck in the carb jet is a common problem )

as above fresh fuel but old stuff usually leads to racing rather than a non starter

Slim



Joined: 05 Mar 2006
Posts: 4685
Location: New England (In the US of A)
PostPosted: Wed May 31, 17 8:24 pm    Post subject: Reply with quote    

dpack wrote:

as above fresh fuel but old stuff usually leads to racing rather than a non starter


Not when there's ethanol mixed in that takes on water over winter, but I'm guessing your don't have that mandate over your way

Edit: Google says you do have ethanol as well. This may be useful: http://www.chicagotribune.com/sns-201505181900--tms--askbildrctnab-a20150529-20150529-story.html

Nick



Joined: 02 Nov 2004
Posts: 33676
Location: Hereford
PostPosted: Wed May 31, 17 8:29 pm    Post subject: Reply with quote    

Our fuel can have up to 10% ethanol in it. It's particularly common in cheap fuel, such as supermarkets.

Slim



Joined: 05 Mar 2006
Posts: 4685
Location: New England (In the US of A)
PostPosted: Wed May 31, 17 8:38 pm    Post subject: Reply with quote    

If that's the case, I'd fill up the tank of every small engine you own every autumn and add something like sta-bil fuel stabilizer at the same time.

dpack



Joined: 02 Jul 2005
Posts: 32953
Location: yes
PostPosted: Wed May 31, 17 9:04 pm    Post subject: Reply with quote    

that certainly wont help,

the old stuff i replaced last time i used the chainsaw started fine but i recon the "moderating" additives had gone off , hence the racing/knocking and hitting the stop button asap

note to self ,find a use for a couple of litres of old fuel

Hairyloon



Joined: 20 Nov 2008
Posts: 14812
Location: Today I are mostly being in Yorkshire.
PostPosted: Wed May 31, 17 10:50 pm    Post subject: Reply with quote    

Nick wrote:
Our fuel can have up to 10% ethanol in it. It's particularly common in cheap fuel, such as supermarkets.

I am told from one source that the premium unleaded has less alcohol, but I'm told from another (who I believe has done reasonable internet research) that there are no hard and fast rules: there is huge variation even within the same brand.

Hairyloon



Joined: 20 Nov 2008
Posts: 14812
Location: Today I are mostly being in Yorkshire.
PostPosted: Wed May 31, 17 10:53 pm    Post subject: Reply with quote    

Personally, I think if I used my reluctant hedge trimmer any more than I do, I'd throw it away and get a battery one: it is a better tool on several counts.

Mistress Rose



Joined: 21 Jul 2011
Posts: 8810

PostPosted: Thu Jun 01, 17 7:10 am    Post subject: Reply with quote    

If the hedge trimmer is a 2 stroke also check the spark plug. I drove a moped for some years and got quite good at cleaning and resetting the spark plug gap. If a 4 stroke, probably a good idea to have a look anyway. Our chemistry teacher at school once read us a very amusing bit about starting a motor mower, which I think covered the situation quite well, but sadly can't remember the details after something like 50 years.

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