First saw rebuild

[Critter87]

Replacing the top end. Should I use red or blue locktite?

 

[Andyshine77]

None required.

 

[ammoaddict]

I use blue if I use any.

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[Okie294life]

None and clean the bolt threads on both side and make sure to torque everything to manufactures specifications. Don’t want any oil or grease in there at all.

 

[Vintage Engine Repairs]

I use blue loctite

 

[Justin Taylor]

Blue can’t hurt in my opinion

 

[stilh036prohog]

What head and is there an gasket involve. Use the blue.

 

[Andyshine77]

In the last 20 years I have never used any Loctite on the cylinder screws, nor have I seen a saw come from the factory with any. Husqvarna uses grease on the cylinder base gasket for centering and sealing, plenty gets in the screws. Torque them properly and you will not have any problems, just check them after a few good heat cycles.

 

[Okie294life]

The issue with using loctite is that it acts as a lubricant and can cause you to strip out the threads if you don’t back off the torque some. So use with caution.

 

[rupedoggy]

I like to coat the piston with red locktite

 

[Deleted member 117362]

In the last 20 years I have never used any Loctite on the cylinder screws, nor have I seen a saw come from the factory with any. Husqvarna uses grease on the cylinder base gasket for centering and sealing, plenty gets in the screws. Torque them properly and you will not have any problems, just check them after a few good heat cycles.

They are using thread locker and sealant on saws now. 562's, 572's for sure.

 

[Deleted member 117362]

Use blue on case bolts, cylinder bolts, muffler and oil pump bolts. Never had a problem.

 

[Andyshine77]

They are using thread locker and sealant on saws now. 562's, 572's for sure.

Is that new? My 550 and 562 had no sealant or three locker. The 390 I have here doesn't either.

 

[Deleted member 117362]

Is that new? My 550 and 562 had no sealant or three locker. The 390 I have here doesn't either.

Yes. New 562 and 572 for sure. Have a new 390 coming and will check it out. If no locker on cylinder and muffler bolts it will be getting some. Looked like they used motoseal colored sealant on cylinder.

 

[Deleted member 117362]

Is that new? My 550 and 562 had no sealant or three locker. The 390 I have here doesn't either.

Neither does my new 390xp, no locker.

 

[Brent Nowell]

Is that new? My 550 and 562 had no sealant or three locker. The 390 I have here doesn't either.

My 550 definitely had a dry base gasket, no grease. The material was green, rubbery smooth surface on both sides. The gasket was reused it came off so nice.

 

[Critter87]

The saw is a 266SE. The cylinder bolts had what locked like red locktite on the threads when I removed them.