how to put together chain break on mcculloch 7-38?

I work for Husqvarna (McCulloch), repairing these saws

Does the chainbrake just need refitting or was it disengaged on disassembly so was under tension and the spring popped out on disasesmbly?

The 738,740,742,838 and 842 all have the same inboard clutch and brake

if the chainbrake popped appart refit the pivot pin to the chain brake if its still in the saw body it goes through the part that looks like a treffoil

then turn the trefoil so the lever is at the top, then carefully using gloves safety glasses etc hold the break body and press the spring thats sticking out against something secure I use the top of the jaws of my bench visethen press down hard but slowly carefully compressing the spring then push it across back into its channel.

now the brake is ready to be refitted , the sprocket will need to have been removed but its not nessasary to remove the centrifugal clutch

feed the chainbrake in so the rear part first carefully lining it up so the pivot pin goes in to the hole in the handle push the brake handle FORWARD to line up the mechanism then screw the 4 t25 screws in and refit the cluch drum/sprocket/ bar chain and cluch cover

I had a look in the IPAs for this series of saws but theres no exploded diagram of the chainbrake mech as its only available as a complete assembly, but I could take pics of the process next time I have one on my bench

Husqvarna Rework
March 2010

From memory the 7-38 had an in board chainbrake, you do not need to remove it to take the cover off, or re fit it. If you HAVE removed the chainbrake,you need to get it back on the saw ( this will mean removing the sprocket and clutch) once back on the saw you need to re load the brake by pulling the hand guard fully back toward the rear of the saw.

Husqvarna man
February 2010