Mac 1-52

[lawnmowertech37]

The walls are thinner than normal and longer. They have to fit down into a recess in the cover.

brad what model is this nut go too ? ? and if i can get the serial # also i can look at the part # on the parts list and i will let you know if i happen to have the orignal bar nuts

also i have rk88hl carb kits if anyone ever needs any

 

[blsnelling]

The bar nuts are for a 1-52.

I just installed a RK-88HL kit yesterday. It now starts up with about 3 pulls cold. I could have pulled all day before and it wouldn't start unless I primed it.

 

[buzz sawyer]

The bar nuts are for a 1-52.

I just installed a RK-88HL kit yesterday. It now starts up with about 3 pulls cold. I could have pulled all day before and it wouldn't start unless I primed it.

Did the same on my 1050 yesterday with the same results - will update in about three weeks.

 

[heimannm]

Maybe....

Brad,

The bar nuts are standard 3/8-24, longer nuts can be found if you search around. I found some last February in Saskatoon, SK while visiting customers in the area. If you really can't find any let me know as I am sure I have a few left over.

The clutch/crankshaft nut PN is 103746, I just checked found the clutch nut is 3/8-24 RH (Ny-lok) one of the saws I have on the shelf. I guess these do not need LH threads since the clutch is keyed to the shaft.

Sounds like you need to make contact with a local branch of Fastenal, what they don't have they can order for you.

Mark

 

[blsnelling]

I just checked found the clutch nut is 3/8-24 RH (Ny-lok) one of the saws I have on the shelf. I guess these do not need LH threads since the clutch is keyed to the shaft.

Do I really need slapped that hard? I'm going to have to go have a look see. I just took it forgranted that it was a LH thread after working on so many Stihls.

BTW, I just went out in the garage and it fired up cold in just a few pulls. It's definately fixed.

 

[heimannm]

Not that hard...

Brad, I won't slap you. If I got slapped in the head every time I made an assumption, I would even less hearing and more bruises that I have now.

If if make you feel any better, McCullochs with the threaded clutch (clutch spider threaded) are all left hand thread in my experience to date.

I was only home for one day in the past week + so I had to spend a few minutes in the shop and squirted a little prime in the 650, just enough to fire and run for a few seconds. Can't wait to get the proper bar/chain fit to this one and run it a bit.

Mark

 

[alpinecrick]

Not to hijack, but where are you Mac guys finding carb kits?--I'm looking for Walbro SDC kits for now....



Casey

 

[blsnelling]

It's just a Tillotson HL carb. I bought my kit on eBay. I recommend you go with genuine Tillotson parts.

 

[blsnelling]

Mark

Is that a new saw Mark? I didn't know they still sold them like that

 

[heimannm]

It's magic

Brad, you can be careful when setting up photo's and make most saws look better that they really are.

I am sure (and thankful as well) that they don't make saws like that anymore.

Alpinecrick, I get kits for my McCulloch carburetors from Bob Johnson (Bob's Lawnmower, Maryland, NY) and Tillotson HL kits from NPA Distributors or any competent shop/dealer/supplier.

Try NPA Dist for the Walbro if you can't find it elsewhere.

Mark

 

[blsnelling]

I finally got the clutch for the 450 crankshaft and the 1-52 is nearly ready to cut wood. Are keys standardized in size? The slot in the crank measures .132" x .350". Of course, Mark, the crank is RH 3/8x24 threaded. I love the stamped logo in the bar. I've got one Stihl bar with the stamped logo on my S-10. I still need a grommet to go around the carb needles.

 

[heimannm]

Try Bob Johnson 607 638 9297

Try Bob for the grommet, PN 57105, he is normally in on Saturday mornings, afternoons only during the week when trapping season is in full swing.

If he can't help you out let me know, I have a few bits kept in secret places.

Mark

 

[heimannm]

By the way...

I am really jealous of that round muffler in great condition.

Anyone out there with parts saws equipped with a round muffler in good condition, let me know. I can help you gain a little $$ for Christmas shopping.

Mark

 

[Jacob J.]

I am really jealous of that round muffler in great condition.

Anyone out there with parts saws equipped with a round muffler in good condition, let me know. I can help you gain a little $$ for Christmas shopping.

Mark

Do you want one just like that one Mark? I have a whole box of Mac mufflers, probably 40 total. You're certainly welcome to one.

 

[blsnelling]

Do you want one just like that one Mark? I have a whole box of Mac mufflers, probably 40 total. You're certainly welcome to one.

Nice gesture Jacob. Nice!