McCulloch 250 Lives Again

[Mastermind]

We didn't take any pictures of this repair job......it was one of those, well we need to dig deeper sorta things...and, well before you know it the fuel tank is off and the oiler is in pieces. The flywheel had to come off...three times.

A big thank you to Marc (diggers dad) for sending us some parts for the old girl. She was sporting a homemade choke and throttle linkage. The carb was assembled incorrectly and several bits were gone. The return spring was missing from the throttle. He also sent a better air filter than the one it was wearing and the plug for the air box that covers the mixture screws.

Anywho......here she is after Jon and I fought with the big Mac and won. You gotta love the way he starts this thing. :hmm3grin2orange:

[video=youtube;ASUiMMN8Vi8]http://www.youtube.com/watch?v=ASUiMMN8Vi8&feature=plcp[/video]

It's heading back to Florida to trim some palm trees tomorrow......I just figured you guys could appreciate that she is back from the edge of death.

 

[heimannm]

Sweet.

Get in the habit of pulling the starter rope out 6" or so when you switch it off; with the pawls in the flywheels they will catch if the engine kicks backwards as it stops and may break the rope or possibly tear something up in the starter if it catches just wrong.

Mark

 

[Mastermind]

Sweet.

Get in the habit of pulling the starter rope out 6" or so when you switch it off; with the pawls in the flywheels they will catch if the engine kicks backwards as it stops and may break the rope or possibly tear something up in the starter if it catches just wrong.

Mark

We should know that by now.....thanks for the heads up. :msp_thumbup:

This saw runs really well now. It's amazing how far down things can go.....a piece missing here......something misplaced there.

 

[watsonr]

Nice saw, that old girl sounded saw-weet!

 

[mad murdock]

Awesome job on that 250! Sounds very nice.

 

[Jim Timber]

Did you mod it at all, or just put it back together correctly?

 

[leeha]

Nice job, Sounds great.




Lee

 

[JRHAWK9]

Sweet.

Get in the habit of pulling the starter rope out 6" or so when you switch it off; with the pawls in the flywheels they will catch if the engine kicks backwards as it stops and may break the rope or possibly tear something up in the starter if it catches just wrong.

Mark

Like this?

[video=youtube;0PymM9vgt7g]http://www.youtube.com/watch?v=0PymM9vgt7g[/video]

I've seen this done on old Macs a few times.

 

[RandyMac]

Holding the rope is a good idea, however the snapback on starting is worse, case damage is possible.
250s can try the snapback on you, it isn't too bad, the Super 250/660s can hurt you though.

 

[Mastermind]

Did you mod it at all, or just put it back together correctly?

It's all stock......

We were just contacted about making it run right. The owner didn't want a "plasticy" saw so this was his idea for a tree trimming beast. :msp_wink:

 

[alderman]

My Nephew gave me a 250 awhile back. I saw a few videos of guys pulling out the starter rope when shutting down but never knew why.
I'd hate to pack one of these around all day but I sure like the way they run.
What chain do you have on it?


Sent from my iPhone using Tapatalk

 

[Mastermind]

My Nephew gave me a 250 awhile back. I saw a few videos of guys pulling out the starter rope when shutting down but never knew why.
I'd hate to pack one of these around all day but I sure like the way they run.
What chain do you have on it?


Sent from my iPhone using Tapatalk

Just to give it a try we used the 28" .404 setup from my Pioneer.

 

[watsonr]

Just to give it a try we used the 28" .404 setup from my Pioneer.

AND?????? Don't leave us hangin' here Randy!

 

[Eccentric]

Holding the rope is a good idea, however the snapback on starting is worse, case damage is possible.
250s can try the snapback on you, it isn't too bad, the Super 250/660s can hurt you though.

Yep..............as can a 103cc RH start Mac (such as a 790) without a comp release. Gotta pull it like you mean it!

It's surprising how strong the 'bounceback' can be when shutting down one of the larger old saws with the pawls on the flywheel (or clutch hub in the case of the RH start Macs). The first time I shut down one of thes saws (while doing the correct' shutdown with the rope held out) I was surprised at just how hard the rope was pulled in. I can see why starter parts get broken on these saws.

 

[cpr]

... or no-decomp kartsaws?

Sounds great. +1 on the starter preservation on shutdown. Randy and Aaron are right on the kickback starts, though. Dayumm, they hurt. Unless you feel like wiring in an ignition delay box (I don't), there's no cure other than commitment and prayers... maybe.

Everyone should have a 250 (and a 10-10), it's the rules.

 

[Brian13]

Sounds great. And I second Aaron, a 103cc saw with the points a little off will make you wince when you pull on it:msp_smile:.

 

[heimannm]

My 740 at a mere 99cc was the greatest challenge to my final digits.

Mark

 

[Warped5]

Love it Randy!

 

[Mastermind]

AND?????? Don't leave us hangin' here Randy!

Well.......errr.......mmmmmm. We didn't video the cuts. :msp_sad:

 

[watsonr]

Well.......errr.......mmmmmm. We didn't video the cuts. :msp_sad:

well........err......mmmmmmm. Did it put a smile on your face?

I thought so! :msp_wink: