McCulloch Chain Saws

[PogoInTheWoods]

When I pulled the tank off there was a washer between the tank and the oiler my pro mac 60 didn't have a washer. Pretty sure I should put one in when reassembly what is its exact purpose?

All of the rigid mount tanks have that spacer. The IPL's actually call it a spacer. It obviously provides a degree of isolation between the tanks for whatever reason and also may serve to level the mating surfaces somewhat at the tank / intake assembly point of the cylinder.

I really need to shut down this laptop and start working on some saws. Been IPL obsessing way too much lately. I recently started drinking coffee again after about a three and a half year break from caffeine. Can easily waste a couple hours in the Mac IPL's after only a cup or two and not even realize it these days. Yeah, it's pretty bad. LOL

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[Jethro 2t sniffer]

All of the rigid mount tanks have that spacer. The IPL's actually call it a spacer. It obviously provides a degree of isolation between the tanks for whatever reason and also may serve to level the mating surfaces somewhat at the tank / intake assembly point of the cylinder.

I really need to shut down this laptop and start working on some saws. Been IPL obsessing way too much lately. I recently started drinking coffee again after about a three and a half year break from caffeine. Can easily waste a couple hours in the Mac IPL's after only a cup or two and not even realize it these days. Yeah, it's pretty bad. LOL

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It's a powerful drug for sure.

I don't know if many of my saws have that washer some might but not all

 

[heimannm]

I've been keeping busy getting saws cleaned up in preparation to move them to the museum, amazing how that consumes a day as well. I did make the mistake one day last week to open up my computer in the new place one morning...morning gone.

I went through some 70 cc cylinders I have on hand and will add a bit to the overall confusion. There are one or two that I have not been able to track down to a specific IPL so far, some others appear in IPL's and some came to me with the saw information which I will take as being correct.

63294 - 4-10 only (70 cc with no compression release, points ignition, flush exhaust flange, no impulse nipple, three screw oil pump). If I remember correctly the bore was 1.999".













Mark

 

[heimannm]

66560 says it fits a 5-10G and I believe I saw that number in a paper IPL but I don't have an electronic copy on this computer.

70 cc with pop up compression release, points ignition, flush exhaust flange, no impulse nipple. I believe the coil mount was transitional in anticipation of the later electronic ignition modules.











I did not take any photos of the transfers but they look like the other chrome bore with two ports, a divider and a sort of open bottom.

Mark

 

[heimannm]

83222, CP70 with the lever style compression release, points ignition, flush exhaust flange, impulse nipple, three screw oil pump.















The iron bore is 1.999".

Mark

 

[heimannm]

84015 is listed for late 6-10 and early 7-10 models. Lever type compression release, points ignition, flush exhaust flange, three screw oil pump, no impulse nipple













The box had both part numbers written on it, not sure where the 87681 came from.

Mark

 

[heimannm]

87185 SP70 I believe...pop up compression release, points ignition, 1 screw oil pump, impulse nipple, recessed exhaust flange















Chrome bore, 1.998" if I recall...

Mark

 

[Brian Thacker]

Look like that 4-10 would fit in a 10-10 case.

Brian

 

[Jethro 2t sniffer]

Interesting stuff Mark. What do you make of the piston talk?

 

[Jethro 2t sniffer]

Just went and cut up some very old dry hard stringy nasty eucalyptus with the 850 this time I pulled out the reed and yup seems to have a little more pull now. Got the Oregon chain a bit better now it seems to be coming right as its getting down and raker adjustment.

Now the important test...

The Av is perfect absolutely perfect works like a charm really happy with it. If any of you end up in the same boat don't be afraid to try it. I used some soft rubber we had lying about from a silage wagon repair it was 3mm thick I've just found some 5mm stuff I might try and I know I have a thick 15mm block of rubber somewhere but yeah bla bla. Any industrial rubber should work and a couple of 4mm machine screws and nuts.

Cut the rubber so it fills up the gap from oil tank to the fuel tank bottom and it helps stop it turning about.

It feels really nice.

Save your money and DIY

 

[kbeck]

Just went and cut up some very old dry hard stringy nasty eucalyptus with the 850 this time I pulled out the reed and yup seems to have a little more pull now. Got the Oregon chain a bit better now it seems to be coming right as its getting down and raker adjustment.

Now the important test...

The Av is perfect absolutely perfect works like a charm really happy with it. If any of you end up in the same boat don't be afraid to try it. I used some soft rubber we had lying about from a silage wagon repair it was 3mm thick I've just found some 5mm stuff I might try and I know I have a thick 15mm block of rubber somewhere but yeah bla bla. Any industrial rubber should work and a couple of 4mm machine screws and nuts.

Cut the rubber so it fills up the gap from oil tank to the fuel tank bottom and it helps stop it turning about.

It feels really nice.

Save your money and DIY

Still cold and snowing here in Northern Michigan maybe springtime can cut some wood

 

[Maintenance supervisor]

All of the rigid mount tanks have that spacer. The IPL's actually call it a spacer. It obviously provides a degree of isolation between the tanks for whatever reason and also may serve to level the mating surfaces somewhat at the tank / intake assembly point of the cylinder.

I really need to shut down this laptop and start working on some saws. Been IPL obsessing way too much lately. I recently started drinking coffee again after about a three and a half year break from caffeine. Can easily waste a couple hours in the Mac IPL's after only a cup or two and not even realize it these days. Yeah, it's pretty bad. LOL

View attachment 799085​

A pot a day keeps the clowns at bay!

 

[Jethro 2t sniffer]

Still cold and snowing here in Northern Michigan maybe springtime can cut some wood

Another couple months?

 

[Maintenance supervisor]

Still cold and snowing here in Northern Michigan maybe springtime can cut some wood

Like mid- May , I remember Easter eggs buried in snow in Pennsylvania.

 

[heimannm]

Northern Michigan has only two seasons, Shovel and Swat...when the snow melts the mosquitos hatch.

Mark

 

[vinnywv]

87185 SP70 I believe...pop up compression release, points ignition, 1 screw oil pump, impulse nipple, recessed exhaust flange

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Chrome bore, 1.998" if I recall...

Mark

The oil tank is wrong for the sp70. That tank has the handle bar mount for the rigid style, not the lower front, single bolt, av mount of the sp saws.

 

[vinnywv]

Id say pro mac 700 for that one. But the cylinder looks correct having the impulse nipple?? Mismatch maybe??

 

[heimannm]

That's a head scratcher, with the impulse nipple it should be for an anti-vibe saw but you are right about the handle mount...PM700 does not have the nipple as the impulse comes through the carburetor flange.

Mark

 

[Jethro 2t sniffer]

The CP70 1 also has a rigid tank now that I'm looking.

So a rigid cylinder can be drilled and tapped for the nipple and used in a AV saw?

 

[vinnywv]

That's a head scratcher, with the impulse nipple it should be for an anti-vibe saw but you are right about the handle mount...PM700 does not have the nipple as the impulse comes through the carburetor flange.

Mark

Yes, thats what i meant, pm700 oil tank, sp70 cylinder. Seems a mismatch. Sorry for the confusion