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I am unable to start my powerbase lawnmower. I have not used it since last summer. There is sufficient petrol and oil. What could be the problem? I have also stupidly lost the instruction manual.

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Have your carb looked at. If you ran it dry before you stored it last Fall then it may be worse. The small inlets and jets can become clogged with varnished gasoline. A carb rebuild kit is usually cheap and can be done by the moderate home mechanic. If this is the problem, in the future use Stabil gas treatment.

Posted on Apr 07, 2011

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Bourght petrol 471sp lawnmower with no manual it will not? put in oil and petrol.

probably the gasoline gummed up at bottom and needs to be cleaned. if the gas is not emptied when stored it can do this and will not start

Apr 08, 2015 | Garden

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I have a powerbase 3.5 hp petrol mower. It has been used three times from new and now refuses to start.i have changed both oil and petrol still nothing. When rip cord is pulled slight murmur then dies off...

Try removing any old fuel out of the carburetor. All it takes is a little condensation (water) at the bottom of the carburetor fuel bowl and the motor won't start.

Oct 29, 2013 | Garden

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Powerbase lawnmower

Bad gas. Empty tank fill with fresh gas with Stabile. Fill oil. 30w. All motors have a low oil cutoff.

Jun 03, 2013 | Garden

1 Answer

Harry Prisma 37 Petrol or mix?

your question was put in the sewing machine catagory,
if you put it in the lawnmower catagory, then someone can help you
with a answer

Jun 02, 2012 | Sewing Machines

1 Answer

Have argos xtreme lawnmower 123cc petrol 3.5hp last used oct 2010 and stored in brick shed for winter. Will not restart april 2011. It has petrol and petrol switch is on. The choke is out for cold start...

Stale fuel is normally the cause for bad starting after the winter, fuel has a very short shelf life before it goes stale, drain the fuel tank and carb float bowl, refill with freash fuel and try again

Apr 05, 2011 | Garden

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Where is the oil plug underneath the mower?

Depending on what engine is on your Toro lawnmower, there may not be a oil plug under the mower deck. A briggs and stratton engine will have one, but if the unit has self propel then you will have to move the guard over the self propel cable. This is a 1/2 in bolt, you will also have to loosen the other bolt to swing the guard around.
On a Kawasaki or Honda, and even if you have a Tecumseh engine then just start the mower up for a few minutes and let the engine oil get warm, then shut the engine off and then lay the mower on the side that has the oil filler cap and put your drain pan under the oil filler cap. You can then drain the oil out of the oil filler tube. You can also do this with the briggs and stratton engine. I find this to be a very convenient way to change the oil.
Then put fresh oil back in the unit. I always suggest to put the engine manufacturer's oil back in the unit, or if that is not available then use another oil from another engine manufacturer. IF you use automotive oil, the oil will break down faster since the heat level for the engine on car is less than that of the engine on your lawnmower. The engine has a water cooled design, that keeps the engine temperature from raising over about 250 degrees F. The engine temp on your lawnmower can get as hot as 400 degrees F in the summer heat and being run for 30 minutes or longer.
A longer answer than you had hoped but I hope the information keeps your lawnmower running well for many summers to come. :)

Apr 04, 2011 | Toro Power Lawn Mower

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Wont start... wont fire...

A lawnmower engine has to have 4 things in order for it to operate properly (besides good compression). 1. Clean oil ...straight SAE 30 in summer 2. Clean Air (Good Filter) 3. Clean Fuel (no older than 30 days or so) and lastly a strong is good, yellow is weak. It may run without these 4 things up to par, but not for long! Start looking around on the mower and try to determine if these things are OK for starters.

Jun 10, 2010 | Briggs & Stratton Garden

1 Answer

Hi, I have recently bought at auction a Honda HR194 Mower

Hey Graham:

Here is an owner's manual for your lawnmower.



May 09, 2009 | Garden

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