Chainsaw won't Start/Run - Reasons for Engine Damage..

VISUALLY EXPLAINED
A chainsaw may not start due to various reasons, and troubleshooting the issue involves checking different components and factors. Here are some common reasons why a chainsaw won't start:
Fuel Issues:
Empty Fuel Tank: Ensure there is enough fuel in the tank.
Old or Stale Fuel: Gasoline can go bad over time, causing starting problems. Use fresh fuel.
Incorrect Fuel Mix: Chainsaws with 2-stroke engines require a specific fuel-to-oil mixture. Ensure the mix is correct.
Spark Problems:
Faulty Spark Plug: A worn-out or fouled spark plug can prevent ignition. Replace it if necessary.
Ignition System Issues: Check for damaged wires or a faulty ignition coil.
Air Supply:
Clogged Air Filter: A dirty air filter restricts airflow, affecting combustion. Clean or replace the air filter.
Blocked Exhaust: Ensure the exhaust isn't clogged, which can lead to starting problems.
Carburetor Problems:
Clogged Carburetor: Dirt or debris in the carburetor can disrupt the fuel-air mixture. Clean or rebuild the carburetor if needed.
Compression Issues:
Low Compression: A worn piston or cylinder can result in low compression. A compression test can help diagnose this issue.
Choke and Throttle Settings:
Ensure the choke and throttle settings are correct for starting the chainsaw. Follow the manufacturer's instructions.
Safety Features:
Check that all safety features, including the chain brake and safety interlock switches, are functioning correctly.
Flooded Engine:
If you've attempted multiple starts without success, the engine may be flooded with fuel. Let it sit for a while to allow excess fuel to evaporate before trying again.
Hydraulic Lock:
If the engine has been overfilled with oil, it can lead to a hydraulic lock. Check the oil level and drain excess oil if necessary.
Worn or Damaged Parts:
For some FREE Printable Download help Leaflets: www.therepairs...
Timestamp:
00:27 - Fuel/Oil Mix Ratio. How this can cause engine damage.
01:05 - Fuel/Oil Mix Ratio. How damage occurs using Detailed Moving Engine Animation.
02:07 - Engine Damage. Comparing a normal piston and a piston damage due to incorrect oil ratio.
02:43 - Prolong Engine Life. Ways to make your chainsaw engine last longer and work better.
03:52 - Fuel too Lean. How the 'Fuel to Air' ratio (from the Carburetor) can cause damage.
05:53 - Carb Adjustment Screws. How they can contribute to engine damage.
07:07 - Inlet Boot/Manifold. How damage in this can lead to engine failure.
08:22 - Barrel/Pot gasket. Damage that can occur to the engine if this gasket fails.
09:08 - Barrel/Pot Gasket leakage. Quick observation to diagnose any leakage.
10:02 - Main Crankshaft Seals. How leakage of these can cause Bog Down and engine failure.
10:28 - Contaminated Gas/Fuel. Here's how dirt in gasoline can cause engine damage.
11:11 - Contaminated Air. This is how insufficiently filtered air can caused engine failure.
12:09 - A personal Thank you from Craig Kirkman of The Repair Specialist..
I have included a link here that a good premium two stroke oil on Amazon. I am not the seller and I do not know the seller, but I know that this type of oil is very good and will help keep your chainsaw in tip top condition for many years:
www.amazon.co....
This principle works for most types of Chainsaw saws, and the following also helps with Chainsaw maintenance. So, whether you are using a Stihl Chainsaw, Husquvarna Chainsaw, basically, all types of Petrol Chainsaw are valid for this principle, as well as many types of or a 2 Stroke Engine. The Electric Chainsaw, of course, escapes this whole principle!
I want to thank you and I hope the information here helped.
Craig Kirkman (Creator and owner of the Repair Specialist Channel) #lawnmower​ #gardening​ #repairing​ #savingmoney​ #chainsaw #Chainsawrepair #oil #smallenginemachines #DIY #howthingswork Please check out my amazon shop. I have recommended some useful items from Amazon below. I guarantee you that these items are the sorts of things I use on a daily basis so I know they are good. I have to be careful in recommending products because I have my name and credibility at stake. So I will only recommend good products. www.amazon.co....
#ChainsawMaintenance
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#FuelMixtureRatio
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[@olek912]

I deeply admire how clear and well explaining your schemes and comments are. Even one colored diagram explains much more than you can figure nd in internet or tools manuals. Really great!!

[@TheRepairSpecialist]

You're very welcome!

[@paulcostello1807]

Hello Craig. I Have a good friend who is a small engine mechanic(34 yrs experience) who uses 30 to 1 mix now in everything HE OWNS due to the increasingly poor quality of the fuel. Thank you for your concise well presented videos. Good luck to you. Regards Paul

[@TheRepairSpecialist]

Thank you so much for the nice feedback. I really appreciate it. Craig

[@budgillett9627]

Craig, I’m glad to see you in the video, it’s nice to put a face with the voice. I’ve watched nearly all your videos and now have a good understanding of the operation of chainsaws. Thank you very much for excellent productions!

[@TheRepairSpecialist]

Thank you so much for your nice feedback. It's comments like yours that motivate me to continue making these videos. Craig 😀👍

[@raybrown1954]

Craig, thank you for the clear and to the point tutorials with illustrations. Your comments on adjusting the idle screw (in addition to the L and the H mixture screws), was most helpful. ZAMA has some great technical information on their website as well. For your viewers who find this information useful, as I did, I would like to point out that you can thank Craig for sharing his hard earned knowledge in a useful technical format by donating a few dollars to him. Hit the circular icon upper left, right next to "The Repair Specialist" to explore this. Good information has value. RB, proud owner of an aging Craftsman 42cc chainsaw and young Stihl MS271 Farm Boss, and other tools that burn fuel and have performance problems.

[@TheRepairSpecialist]

Thank you so much for your nice feedback. It's comments like yours that motivate me to continue making these videos. Craig 😀👍

[@Hydrogenblonde]

Another excellent video!

[@udonhardware5178]

Great advice.

[@patrickmiller5240]

Starting a chainsaw and immediately starting to cut without allowing it to warm up can lead to piston and cylinder damage or scoring because the piston starts to expand before the cylinder causing a cold surge

[@petefroud5308]

Good info again.

[@treebutcher2000]

Spot on. 👍

[@SnoWhat4]

Constitution?? 🤔 Surely Consistency? 😆 Great info though. Very useful. Saved as top reference vid for later !!

[@amitdesai2421]

I got an old Chainsaw which was rebuilt with new block and piston, weld on flywheel which is wobbly, with no air deflector cover (I don't know what it called), and some side play in crankshaft about 4 to 5 mm does it will damage my Chainsaw? Now I used it today and found that it heats up too much very quickly, then it's stopped working...!

[@panuser5928]

Νice video !

[@gtw9998]

Hi how do you mix 40 to 1 in mm of oil

[@philliphall5198]

If they call for a 50-1 mix , use 45-1 or 40-1 , this is why many engines last 40 years and then only need new rings Yes it can stop up exhaust port and screen, yet at the price of new equipment, I clean what I have as needed

[@TheRepairSpecialist]

Great, thanks