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Macculoch M3540PD petrol lawn mower & black smoke & flame

We have a macculoch M3540PD petrol lawn mower and it throwing out black smoke and a flame what can it be and how do I fix it

Thanks for reading


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  • Frank
    Frank May 11, 2010

    no much, time to get a new one!


5 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: My lawn mower doesn't start and when it does, smoke comes out of exhaust

I used my mower two weeks ago. Now it won!t start, I check the air filter,change the gas, check the
spark plug and it was soaked with gas. I clean the plug and set the gap and it still won!t start. It
sound like it wants to start but it will not start.

please answer me fast
Thank you very much

Posted on Sep 17, 2008

  • 77 Answers

SOURCE: Brand new weed eater lawn mower blowing white smoke.

Pull air filter see if theres any oil in it,make sure the oil isnt overfilled. Push mowers usually smoke like that if theyre overfilled,or tipped on thier side,if there is oil in filter simply take filter off,drain oil to correct level,and run it till smoke goes away. If none of this is the problem rings are probably shot. Weedeater is a cheap brand and theyre made cheap too,not made to last.

Posted on Aug 12, 2009

  • 68 Answers

SOURCE: Murray 4.5 hp Q lawn mower runs rough and smokes.

White smoke indicates that it is burning oil. The smoke would be black if it was running rich. So probably the rings will need to be replaced eventually. These mowers are prone to problems but the carbie is least likely to be the problem. So before you adjust the carbie take the cover off the top and give it a good clean and check that all the hoses are connected and are not cracked. Then make sure the airfilter is clean, blow it out with an air compessor or better still get a new one. Then try it out agian. If this doesn't help there is two screws on the carby marked L and H. Turn these only 1/8th of a turn at a time and note or make their current position. Start with the H scew with the mower at full revs. Turn anti clockwise untill you get max revs then turn it back a bit. Running too lean will over heat the motor and damage it. Then if needed adjust the L (or Low)screw. If you get black or grey smoke when you push the throttle up from idle to full its too rich so turn clockwise. If if slows before it picks up to full revs turn anti clockwise.

Posted on Sep 06, 2009

  • 3 Answers

SOURCE: Webb Diplomat 350 Petrol Lawn Mower stops running 10 minutes

The 'DIPLOMAT' series of WEBBs is bad news, its NOT a WEBB! Webb were swallowed by qualcast-atco-suffolk, who dunped Webbs tooling, & dressed up punches & commodores in thin disguises, dumped the briggs & stratten engine for their own alloy job, & charged a rip off premium for the Webb decals!
The qualcast suffolk alloy engine suffers from a WIPAC electronic ignition unit. As it gets old, it fails, sometimes completely, sometimes as it warms up. Once cool, it works for a while again.
Not too hard to replace, but hard on the wallet, £69 genuine, £40 fake! On the whole its not too bad an engine if cared for & oil changed often. better to look on ebay for a cheap used HONDA engine & transplant! R-E-L-I-A-B-L-E !............I did! ( £35 honda gc series, 5,5hp! )

Posted on Apr 02, 2010

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