Question about Poulan Featherlite Gas Blower, with Low Emission Engine, 150 M

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Craftsman leaf blower wont start

I replaced the module,and spark plug and its getting fuel but the spark doesnt seem very strong . is there a air gap adjustment on this unit? model #358.797170 25cc blower vac

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The air gap for the ignition coil core to flywheel is adjustable on some engines and the gap does vary.
On a Stihl, I used a matchbook cover first, then doubled it and got the engine to start. That amounts to 8-10/1000ths (0.008-0.010") as measured with a digital caliper after-the-fact.
I'm troubleshooting another engine currently from a McCulloch Airstream IV that only has ~12 hours and no spark but the coil measures roughly as it should; around 1K Ohms. Was surprised to find the company went bankrupt in '99. Another one killed by Asians and fairly poor design.

Posted on Oct 22, 2010

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1 Answer

My craftsman 25cc leaf blower wont start


pull the plug, plug into wire, touch head of plug to metal on engine. hold by rubber boot while touching pull starter, see if you get a spark across the plug gap, its small but you can see it. if no spark check switch. if plenty of spark clean fuel system and check primer

Nov 04, 2014 | Garden

1 Answer

Got a craftsman leaf blower cranks up and runs fine for about 5 mins then starts losing rpms


ITs hard to diagnose these things over the internet, it could be so many things.
Is this a gradual loss of power? If so; Im sorry to say; that it sounds like its losing compression as it warms up. It is not cost effective to repair the unit.

If the loss of power is more sudden it could be a failing ignition module. Ive even seen spark plugs that quit working when they get hot.

To test this you will need a proper spark tester, laying the spark plug against the head will not provide an accurate assesment, and a can of carb cleaner. Run the unit with the air box cover and filter removed till it fails and immediately give a shot of carb cleaner in the carb and restart. If it starts right up it could be fuel related. IF it doesnt start right up then quickly test for spark. If no spark then its likely the ignition module. If it wont run on the extra fuel and it has spark then it has probably lost compression.

Nov 05, 2012 | Craftsman 4 Cycle Blower/Vac

1 Answer

My chainsaw wont start! I replaced the spark plug and added fresh gas .It acts like it wants to start but doesnt I even sprayed the carb out with carb cleaner any ideas?


Check the fuel filter, air cleaner, and muffler for plugging. Check the condition of all fuel lines. Does the primer bulb fill with fuel when pumped several times? Check the spark at the plug (gapped at 0.020") which should be blue and snappy. If weak looking, you may need to reset the ignition module gap to the flywheel magnets with a thin business card for a gauge. Remove the left side case to expose the flywheel and ignition module. Turn the flywheel to bring the magnets under the ignition module, insert the card into the pole gaps, loosen the module screws to allow the module to contact the magnets, then re-tighten the screws. Turn the flywheel one full turn and watch the gaps to make sure the flywheel doesn't contact the module. Recheck for spark. Hope this helps!

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1 Answer

CRAFTMAN LEAF BLOWER WONT START


Fuel starvation - 'lean fuel' condition
Basic things to check:
1) spark plug
2) spark arrestor in muffler
3) fuel lines and tank filter
4) turn adjustment needles out (counterclockwise) 1/4 to 1/2 turn
Chain Saws:
5) check impulse tube and intake boot for cracks or leaks
*if all of the above are OK and/or do not improve performance then:
Remove Carburetor
6) replace gaskets/diaphragms
a) use a spray carb cleaner to clean jets, holes, and body of carb
b) fuel pump diaphragm goes against the carb body,
then the gasket towards the outside
c) metering gasket goes against the carb body,
and the diaphragm goes towards the outside

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2 Answers

Won't start --has gas--has spark craftsman leaf bower


most likely the air filter is clogged, take it out blow it out or spray water through it and allow it to dry completely.

alterinavely, just pouring a small amount of gas onto the filter should make it work, i would do that even if you do clean it properly.

this method works for cars too!

Nov 07, 2009 | Craftsman 4 Cycle Blower/Vac

1 Answer

I am gettinno spark from the spark plug I have put in a new plug,


first check to make sure the on/off switch isnt shorting out anywhere. try resetting the gap between the flywheel and the igniton module. you can use an index card or manilla envelope to set the gap. if it still doesnt work try replacing the module

Nov 22, 2008 | Craftsman 4 Cycle Blower/Vac

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