Securing clutch to Honda GC 160

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  #1  
Old 05-06-09, 05:42 PM
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Securing clutch to Honda GC 160

I'm trying to put a new motor (Honda GC-160 5 HP) on a 1985 Mighty Mac 12P chipper-shredder. The centrifugal clutch assembly is quite battered and I can't use 2 set screws to secure it to the motor shaft, as originally designed. The Honda shaft is threaded to accept a bolt at the front end. Would this plus the shaft key be enough to secure the clutch? What size bolt should I use -- not mentioned in the Honda manual. The shaft is 3/4". Thanks
 
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Old 05-06-09, 10:38 PM
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I don't know...is there a spacer to take up the slack between the clutch and the engine so you can tighten a bolt against the clutch without it just sliding down the crankshaft?
 
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Old 05-07-09, 05:03 AM
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No spacer needed. The shaft is exactly the right length for the clutch assembly. The problem is that the guys who removed the assembly from the old motor had to bash it a lot to get it off and the pulley that holds the belt was pushed up a bit to block the two holes for set screws. I reckon a bolt and washer put through the end of the shaft should be enough to secure the assembly, but don't know for sure. I'm also hoping someone here can give me the proper bolt specs because I don't want to run any risk of ruining the threads in the shaft.

Unfortunately, the clutch assembly is no longer available from the manufacturer. I might go to the city to see if any bearing supply places have an alternative assembly that would work.
 
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Old 05-07-09, 10:18 PM
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Yes, a bolt should work. I don't know what thread it will be, since some crankshafts are made to manufacturers specs. I imagine it will be a 8mm or 10mm bolt.
 
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Old 05-08-09, 07:22 PM
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Thanks. I wound up getting my problem solved. I took the clutch back to the small repair shop where the two guys bashed it off the old motor. I showed them how the pulley was blocking the set screw holes. One took a small hammer and kept tapping the pulley until it slid down enough to get the set screws in. But I'll still put a bolt, washer and lock washer in the end of the shaft for extra security.
 
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