Titan Chainsaw won't pull

[pleasant]

2 minutes ago, Bob The Dog said:

Had a similar issue with a husqvarna leaf blower. Turned out to be a casing screw behind the flywheel had come loose and fallen out, and was jamming behind the flywheel against the engine side. It moved occasionally and would allow the engine to rotate a few times, but would then prevent it turning. May be a possibility? 

Stihl handeld blowers are prone to that.

Had several machine given to me to dispose of because a customer has done 'self diagnosis' and tells me the engine is seized and they just want to buy a new one. 😇

[Shaffick]

8 minutes ago, pleasant said:

To be honest,. Explaining that better now, is a lot more helpful. What you are stating would appear to be isolated to the recoil unit. My earlier comments to help, were on the understanding the flywheel without the recoil fitted would only move by hand less than a full revolution before it '"locked' again. Or maybe I read your original post incorrectly

I was thinking that, but why does the flywheel keep seizing?

[pleasant]

1 minute ago, Shaffick said:

I was thinking that, but why does the flywheel keep seizing?

?? Thought he said it was fine once recoil was off

Edited October 9, 2022 by pleasant

[Shaffick]

8 minutes ago, Bob The Dog said:

Had a similar issue with a husqvarna leaf blower. Turned out to be a casing screw behind the flywheel had come loose and fallen out, and was jamming behind the flywheel against the engine side. It moved occasionally and would allow the engine to rotate a few times, but would then prevent it turning. May be a possibility? 

Not sure. I'm going to have to strip it down completely to investigate. Thanks 

[pleasant]

3 minutes ago, Shaffick said:

Not sure. I'm going to have to strip it down completely to investigate. Thanks 

There arent casing screws located behind the flywheel...its a different typre of casing compared to a blower.

[Shaffick]

1 minute ago, pleasant said:

?? Thought he said it was fine once recoil was off

Once I remove the recoil, the flywheel is seized. I have to use a socket and ratchet to free it off. Once free the flywheel moves freely by hand. When I refit the pull assembly. The engine will seize after a few pulls. I will then have to repeat the above procedure.

[pleasant]

1 minute ago, Shaffick said:

Once I remove the recoil, the flywheel is seized. I have to use a socket and ratchet to free it off. Once free the flywheel moves freely by hand. When I refit the pull assembly. The engine will seize after a few pulls. I will then have to repeat the above procedure.

I would hazzard a guess its a bearing issue. Either crankshaft either end or possibly the clutch drum bearing. All three bearings are designed to keep the crankshaft in line. If a bearing is failing it can cause end float in the crank and can cause the crank to rotate elliptically. If you grab the flywheel can you move it side to side up and down? This will indicate your issue. Removing the recoil will allow the crank to move off its designated line thriugh the engine. Re fitting the recoil will line everything up again and restrict this 'off centre' movement and could cause the issue you have. 

[Shaffick]

2 minutes ago, pleasant said:

I would hazzard a guess its a bearing issue. Either crankshaft either end or possibly the clutch drum bearing. All three bearings are designed to keep the crankshaft in line. If a bearing is failing it can cause end float in the crank and can cause the crank to rotate elliptically. If you grab the flywheel can you move it side to side up and down? This will indicate your issue. Removing the recoil will allow the crank to move off its designated line thriugh the engine. Re fitting the recoil will line everything up again and restrict this 'off centre' movement and could cause the issue you have. 

I'll try the side to side up and down motion tomorrow. Thanks for your advice. I'll post tomorrow. Much appreciated.

[Shaffick]

13 hours ago, pleasant said:

I would hazzard a guess its a bearing issue. Either crankshaft either end or possibly the clutch drum bearing. All three bearings are designed to keep the crankshaft in line. If a bearing is failing it can cause end float in the crank and can cause the crank to rotate elliptically. If you grab the flywheel can you move it side to side up and down? This will indicate your issue. Removing the recoil will allow the crank to move off its designated line thriugh the engine. Re fitting the recoil will line everything up again and restrict this 'off centre' movement and could cause the issue you have. 

Hi again. 

I've come to the conclusion that there is a bearing at fault like Pleasant stated. My friend has the same model of chainsaw and I swapped the pull cord assembly over and the problem still persists thus eliminating anything wrong with the pull assembly. I think when refitting the assembly, it centralizes everything and causes the issue with the bearing seizing up.

I would just like to say thanks for everyone's valuable advice and knowledge. I would like to say an even bigger thanks to Gareth, he's certainly the biggest tool that every toolbox requires 😁 and his advice was invaluable in diagnosing my problem. Thanks all and much appreciated. 

[pleasant]

4 minutes ago, Shaffick said:

Hi again. 

I've come to the conclusion that there is a bearing at fault like Pleasant stated. My friend has the same model of chainsaw and I swapped the pull cord assembly over and the problem still persists thus eliminating anything wrong with the pull assembly. I think when refitting the assembly, it centralizes everything and causes the issue with the bearing seizing up.

I would just like to say thanks for everyone's valuable advice and knowledge. I would like to say an even bigger thanks to Gareth, he's certainly the biggest tool that every toolbox requires 😁 and his advice was invaluable in diagnosing my problem. Thanks all and much appreciated. 

No worries.....my invoice will follow in due course. 😁