Husqvarna Craftsman 36cc, 16 In. Gas Chain Saw - Page 11 - Answered Questions & Fixed issues

Check the leftside manual transport bypass lever has not somehow engaged. Compare it to the right side.The two transaxles are driven by the same belt so extremely unlikely it's a belt problem.Look for any signs of fluid leaking from the left transaxle shaft seal. If the seal has been leaking then it may be low on fluid. The transaxles are considered maintenance free so there are no instructions from Husqvarna for adding fluid but it can be done. However, if the shaft seal is leaking it will need replaced.See operators manual regarding bypass levers (rods).https://www.manualslib.com/manual/74128/Husqvarna-115-127127-Ir.html

Normally, you just go by the Briggs and Stratton engine and model numbers. B&G carbs https://www.google.com/search?q=replacement+carburetor+for+a+18.5+brigs+and+Stratton Or Walbro https://www.banggood.com/buy/briggs-stratton-carburetor-walbro-697202.html I would be surprised if Jack didn't have one!

Briggs and Stratton 31E707-0111-E1 Parts Diagram for ...

https://www.jackssmallengines.com > briggs-stratton > c...

Briggs and Stratton 31E707-0111-E1 Carburetor - Walbro &Nikki, Cylinder Head, Fuel Supply, Kit - Carburetor Overhaul - Walbro & Nikki Exploded View parts lookup by model. Complete ... (Carburetor Part Numbers 696179, 697202). $6.18. https://www.google.com/search?q=Walbro+697202 ..

Model number?

Check the carburetor anti afterfire solenoid was not disconnected or otherwise disabled while "cleaning".

Kawasaki FR730V

Spark Plug
NGK BPR4E6
.030"
16 lb/ft

It is shown here in the Manual https://www.manualslib.com/manual/502540/Husqvarna-Yth20k46.html?page=27 ..

ever check the fluid level . they do not like air .

sounds like the where the oil comes out is gummed take the chain off and clean the hole out.

Check transaxle bypass is closed (rod is all the way forward).

Check transmission drive belt and linkage from right foot pedal to transmission.

take it to your local dealer for their help many thinks have to be seen by the fixer which we can not do

for you own safety fix it right.

White smoke is water vapor (steam) Blue smoke is oil Black smoke is rich mixture Best guess is that you have a blown head gasket.

Did you be chance check and see if there is fluid in the transmission?

No, check that the two fuel lines are not switched and fuel purge is working.

Easy way to test; Identify which line has the filter and disconnect the other (fuel return) at the carburetor. Then press purge bulb several times. Fuel should spurt out the fuel return port at the carb.

If no fuel spurt, move fuel line (with filter) to the other carb fuel port and repeat test. If still no fuel then purge is not working... either fuel not delivered from tank or carburetor is blocked or bad diaphragm or other.

If it sat out in the weather all winter it may have rusted the actuator shafts.

If it happened suddenly, then more likely a stick has lodged underneath or something has come apart and jammed both the clutch and the forward reverse actuators.

it must have a loose bolt under it

My thought would be immediately sheared flywheel key, it is easily done to not enter the key in the flywheel to the recess in the crank, the key is alloy and part of the flywheel itself.

drive shaft possibly broke the end off or the gear box at end has failed

Fundamentals

1. FUEL
2. COMPRESSION
3. SPARK

A simple diagnostic shortcut is starter fluid. Remove air filter and spray a short burst (1 second) of starter fluid directly into throat of carburetor. Promptly attempt to start.

If it runs for a couple seconds and dies, then compression and spark ok but fuel delivery is not. Check fuel lines and filter inside tank.

If no run, then conirfm spark and compression.
Remove spark plug and hold electrode end against the cylinder and pull starter cord. You should see a spark.

To test compression, spark plug removed, place thumb over spark plug hole and give starter a pull. The compression should push your thumb and make a PFffft sound.

I am unfamiliar with the model but taking a guess; the drive belt could be slipping when it picks up something. It would be a good idea to look underneath to see what those sticks and stones might be getting stuck on instead of being thrown clear and check the drive belt for condition and tension.