Hi All,
I am having problems with a Husqvarna LC 146S (2016) mower with Briggs and Stratton 550E Series engine (Serial No: 14 1125 51 8372).
The mower tries to start and might run for a couple of seconds on idle (low revs) and cut out sometimes with a backfire. The last thing I did was check the valve clearance and set to 0.15mm (6/1000 inch) as recommend on YT video. The mower will not fire now that I have changed the clearances. I am at a loss not on what else to do as I have tried everything I found through watching repair videos on YT.
Here is what I tried so far in order:
1. Removed carb and cleaned jets.
2. Removed spark plug and checked for ignition spark (ok)
3. Cleaned around the kill switch and checked for continuity. Kill switch appears to be working as no spark on plug when switch in closed position.
4. Adjusted gap between flywheel and coil which was rubbing in spots.
5. Checked oil leavl and noticed it was over filled. Took some oil out of engine.
5. Double checked the carb to ensure jets are clean
6. Removed flywheel and checked the key/pin was ok.
7. Checked compression by pulling blade in clockwise direction. It doesnt spin freely and does bounce back at certain parts of the cycle. I can hear compressed air been expelled through the air filer which is currently removed.
At this point the mower was trying to start once every 5 - 10 pulls. It might run on very low revs for 1 - 3 seconds and cut out. Poured petrol directly into spark plug hole to see if it might help but didnt make much difference. Noticed when I removed spark plug it was wet and the fuel was blackish colour. I assume this is remaining oil residue in the engine from over filling.
8. Set valve clearances to 0.15mm. I checked before adjusting and 0.15mm gauge was very tight. It was probably set to 0.1mm previously on the exhaust (top valve) and inlet valve (bottom) had wider gap.
Mower doesn't try to start now. It might give a small backfire after pulling cord.
i am at a loss what else to try. The only other thing I can think about is the automatic choke not working. The spring and cable are all connected and it moves freely.
Any help would be appreciated.
I am having problems with a Husqvarna LC 146S (2016) mower with Briggs and Stratton 550E Series engine (Serial No: 14 1125 51 8372).
The mower tries to start and might run for a couple of seconds on idle (low revs) and cut out sometimes with a backfire. The last thing I did was check the valve clearance and set to 0.15mm (6/1000 inch) as recommend on YT video. The mower will not fire now that I have changed the clearances. I am at a loss not on what else to do as I have tried everything I found through watching repair videos on YT.
Here is what I tried so far in order:
1. Removed carb and cleaned jets.
2. Removed spark plug and checked for ignition spark (ok)
3. Cleaned around the kill switch and checked for continuity. Kill switch appears to be working as no spark on plug when switch in closed position.
4. Adjusted gap between flywheel and coil which was rubbing in spots.
5. Checked oil leavl and noticed it was over filled. Took some oil out of engine.
5. Double checked the carb to ensure jets are clean
6. Removed flywheel and checked the key/pin was ok.
7. Checked compression by pulling blade in clockwise direction. It doesnt spin freely and does bounce back at certain parts of the cycle. I can hear compressed air been expelled through the air filer which is currently removed.
At this point the mower was trying to start once every 5 - 10 pulls. It might run on very low revs for 1 - 3 seconds and cut out. Poured petrol directly into spark plug hole to see if it might help but didnt make much difference. Noticed when I removed spark plug it was wet and the fuel was blackish colour. I assume this is remaining oil residue in the engine from over filling.
8. Set valve clearances to 0.15mm. I checked before adjusting and 0.15mm gauge was very tight. It was probably set to 0.1mm previously on the exhaust (top valve) and inlet valve (bottom) had wider gap.
Mower doesn't try to start now. It might give a small backfire after pulling cord.
i am at a loss what else to try. The only other thing I can think about is the automatic choke not working. The spring and cable are all connected and it moves freely.
Any help would be appreciated.