Colt Marlington
ArboristSite Guru
Yesterday I bought a used 421 for what initially looked to be a good price when it fired right up.
I knew there was some issue with the chain, but didn’t bother to pull the clutch cover as I was in a big hurry. Looks like CAD got the best of me on this one.
Anyway, although I have a basic understanding of mechanicals in general, I’m relatively new to the finer aspects of chainsaw tuning.
The saw needs a new sprocket clutch drum, and a chain, and I was wondering if the conversion to rim sprocket is a good option. Apparently the big advantage is being able to switch to a .325 chain.
Is the rim sprocket a more durable option?
In the future, if ever needed, will I be able to replace just the sprocket at a lower price than the whole drum?
I know I’ll need a 0.2mm shim I believe is correct.
And I have to buy a new chain anyway.
And if I do the switch, I assume a new bar also?
And are there any bars that will work with the rim sprocket conversion without modification for the oiler?
The saw came with a relatively new Oregon Double Guard 16” bar. I have no idea if it is the correct bar for the saw.
In the end I just want something that works.
But if I’m going through the trouble and expense wouldn’t mind getting a nicer bar and chain, within reason, either with the stock sprocket or the rim sprocket.
I appreciate any help that you guys can give me.
I’ve certainly learned a lot in the short time I’ve been here.
I knew there was some issue with the chain, but didn’t bother to pull the clutch cover as I was in a big hurry. Looks like CAD got the best of me on this one.
Anyway, although I have a basic understanding of mechanicals in general, I’m relatively new to the finer aspects of chainsaw tuning.
The saw needs a new sprocket clutch drum, and a chain, and I was wondering if the conversion to rim sprocket is a good option. Apparently the big advantage is being able to switch to a .325 chain.
Is the rim sprocket a more durable option?
In the future, if ever needed, will I be able to replace just the sprocket at a lower price than the whole drum?
I know I’ll need a 0.2mm shim I believe is correct.
And I have to buy a new chain anyway.
And if I do the switch, I assume a new bar also?
And are there any bars that will work with the rim sprocket conversion without modification for the oiler?
The saw came with a relatively new Oregon Double Guard 16” bar. I have no idea if it is the correct bar for the saw.
In the end I just want something that works.
But if I’m going through the trouble and expense wouldn’t mind getting a nicer bar and chain, within reason, either with the stock sprocket or the rim sprocket.
I appreciate any help that you guys can give me.
I’ve certainly learned a lot in the short time I’ve been here.