Scott Bonnar 45 Rebuild (17 - Intermediate Clutch Installation)

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0:00 - Adjustment Bracket
5:25 - Operating Lever

With the intermediate clutch back together, let's get it mounted on the mower.

As this machine is a solid deck mower, we'll start by installing the u-shaped bracket into which the clutch cable will be threaded. The top hanger bolt onto which the clutch bracket mounts is integral to this cable bracket and it goes on first.

If you've got a twin rail mower, you won't have the cable bracket (or rather, it will be welded to the back rail); you'll be using two regular bolts to mount your clutch bracket instead.

The cable bracket is installed using the integral bolt and a second, smaller bolt, star washer, and nut. Secure this small bolt first as it's easiest to position the clutch bracket without any washers or nuts in place on the hanger bolt.

The clutch adjustment bracket can now be bolted to the side of the mower. We'll worry about adjusting the bracket's position when it comes time to tension the chains. Leave the two nuts finger tight for now.

We removed the outer sprocket of the intermediate clutch assembly to reduce weight and make the bracket easier to manage during installation. This sprocket can now be re-installed. Align the internal roll pin with the slot in the clutch bracket shaft and slide it home.

The clutch operating bolt is now inserted through a washer and then through the centre of the intermediate clutch assembly. On the back side, this bolt passes through a hole in the clutch operating lever.

All of the stainless steel fasteners used on this machine were purchased from Cameron Petrie at CETE Parts.

🎬 CETE Parts Unboxing
   • Cutting Edge Turf Equipment Unboxing  

🌐 Cameron Petrie / Cutting Edge Turf Equipment
  / ceteparts  
https://www.ebay.com.au/usr/ope-parts

A Nyloc nut is used to secure this bolt but don't over-tighten it. The intermediate clutch works when the outer sprocket engages the cork adhered to the inner half of the clutch; to idle, the outer sprocket needs to be able to slide away from the cork along the shaft of the operating bolt. In other words, leave a small gap between the large outer sprocket and the cork.

Note the cork should not be lubricated in any way.

🎬 Watch all the rebuild videos here
   • Scott Bonnar 45 Rebuild  

🎬 Watch all the teardown videos here
   • Scott Bonnar 45 Teardown  

🎬 Check out the SB 45 walkthrough videos if you're new to cylinder mowers and Scott Bonnars
   • Scott Bonnar 45 Walkthrough  

⚠️ Your safety is your responsibility. Don't forget to disconnect your spark plug before starting work on your machine and always read and follow the instructions/labels on your equipment, tools and chemicals. ⚠️

#ScottBonnar #Rebuild #IntermediateClutch
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Additional Resources
🌐 Scott Bonnar Restorations FB Group
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🌐 Scott Bonnar - Buy, Sell, Swap Australia FB marketplace
  / 1207116562722291  
🌐 Scott Bonnar Addicts FB Group
  / 791569104336316  
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About me and this channel: I'm Michael, a homeowner and aspiring lawn addict. I make these videos to share as much as I can, as best I can, from my recent experience rebuilding two Scott Bonnar 45 mowers. Although I'm a passionate wood worker and ex-IT guy, I have zero mechanical training. I'm no expert on these subjects but I learn by sharing and it encourages me to grow a better lawn and build a better mower if I know you're watching!

© 2020 Michael Hanes. All rights reserved.