Question about Stihl 028 Chainsaw Crank & Case

1 Answer

Stihl 028 chainsaw runs good for awile then bogs and dies

Starts easily, good compression and spark, runs well for 15-20 minutes, then bogs and dies

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  • Matthew Morton
    Matthew Morton Feb 13, 2014

    Sorry if this sounds basic, but have you checked the air filter. They clog up with sawdust after a while and affect the way the saw runs. I had the same issue and this sorted it out.

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  • Stihl Master
  • 1,807 Answers

Check fuel filter, fuel tank vent and possibly clean carb and replace carb diaphrams

Posted on Mar 07, 2015

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Posted on Jan 02, 2017

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SOURCE: have stihl O25 chainsaw, starts, runs about 5

hey have the same o25 stihl,great saw when their working right.have had to replace fuel line to carb 5x over 7yrs.hairline crrack and it will **** air and conk out in 2-5 seconds.also there is a pulse line to carb which can also crack.if you have good spark at plug its likely a fuel delivery problem. collin

Posted on Jan 15, 2011

  • 6 Answers

SOURCE: I have an older stihl 028. The saw starts and

First check your fuel filter. Its on the end of the pick up tube in the fuel tank. Could be clogged. this is a relatively easy and inexpensive place to start. Make sure the fuel supply isnt pinched anywhere along the way.

Could be a scored cylinder. A scored cylinder is common problem with all makes of chainsaws. If you dont take special care to keep the air filter clean and in perfect working condition, the wood chips and dust will enter the combustion chamber and score the cylinder walls, ruining the rings causing a loss of compression.

The piston could also have been damaged from running to lean of fuel to air mixture causing heat damage to the piston and cylinder.

Hope this was helpful. If so, gimme a thumbs up vote!

Thank You

Posted on Feb 01, 2011

  • 144 Answers

SOURCE: Stihl 021. Starts but will not

Hi scooterbu850,
You indicate you replaced the carburetor kit, did you check for dirt and clean the carb and install the kit very carefully, and make sure all the gaskets on the carb and between the intake and carb have no air leaks? The first thing is to try to adjust the low speed screw to give you a faster idle, it is the screw with a spring, on top of the carb where the throttle cable hooks up. Turn it in (clockwise) to give more idle speed. Now locate the mixture screws on the carb, they are on the side of the carb and also have springs on them. They are marked with an L or H on the carb body beside the screws. Turn them both in (clockwise) until lightly seated then turn them out (counterclockwise) 1 turn or if you prefer turn them to the position they were before you took the carb apart. 1 turn out is the recommended position by the manufacturer so the engine starts and runs, sometimes this is the right position. If it does not idle properly, remember this position and turn the idle mixture screw out (counterclockwise) in 1/8 turn increments until it runs properly 5 or 6 times or more if it runs better. (When turned out you are adding more gas to the mixture). You could also try the high speed mixture screw and see if it helps with the idle, but do not turn in (clockwise) to less than 1 turn out from a lightly seated position, to prevent overheating. If this doesn't help, check the air and gas filters, the gas tank and fuel lines for blockages. Check the spark plug to see if it is wet and if it isn't no fuel is getting to the engine. These are a few suggestions for you to try. Hope this helps a bit. All the best and good luck.

Posted on Mar 04, 2011

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2 Answers

I have an old 028 stihl av super electrical quickstop have rebuilt the carb on it put new gas new spark plug is turning over but not starting please help Dan from NY


due to age , id start by seeing if it has any spark in plug , remove plug wire and insert 1/4 bolt , arrange near by a metal bolt or other item (not handle ) and do not hold bolt near item
turn ign switch on (don't bother with choke) and pull engine over several times , observe 1/4 bolt for blue sparks (dim lights if necessary )
no spark present , trouble shoot ign system farther
spark present - remove and clean plug with good solvent
add a little bit of engine start fluid to plug hole and reinstall plug and wire , attempt to start engine , nothing - compession problem or shorted plug if it sputters but doesn't start then its a carb problem , troubleshoot carb (clean it )

Apr 14, 2015 | Stihl Garden

1 Answer

Stihl chainsaw problems


Adjust the high speed screw on carb

Install a new spark plug

Use fresh fuel

Aug 05, 2014 | Stihl Garden

1 Answer

I have an older stihl 028. The saw starts and idles nice. As soon as you throttle up or put it under load, it bogs out, It also seems a little smokier, Can ya help? I cleaned the carb and jets and...


First check your fuel filter. Its on the end of the pick up tube in the fuel tank. Could be clogged. this is a relatively easy and inexpensive place to start. Make sure the fuel supply isnt pinched anywhere along the way.

Could be a scored cylinder. A scored cylinder is common problem with all makes of chainsaws. If you dont take special care to keep the air filter clean and in perfect working condition, the wood chips and dust will enter the combustion chamber and score the cylinder walls, ruining the rings causing a loss of compression.

The piston could also have been damaged from running to lean of fuel to air mixture causing heat damage to the piston and cylinder.

Hope this was helpful. If so, gimme a thumbs up vote!

Thank You

Oct 08, 2010 | Stihl 16" Chainsaw Bar Chain Saw 018 025...

1 Answer

Stihl chainsaw 028 wb will not start it has spark, but always floods, I cleaned the air cleaner


Does the saw have a lot of hours on it ? What is the fuel mix you are using, Stihl recommend 40:1
You may need a CARB KIT.

Feb 02, 2010 | Garden

2 Answers

My 345 chainsaw bogs down when it hits wood


There are two idle screws one high, and one low. Your high adjustment idle screw needs to be adjusted.

Jan 18, 2009 | Husqvarna Forest & Garden No.967012396 345...

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