OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Tecumseh / Kirby Engines Engine Parts for a Scott Bonnar Mower 45

Hi all.
I just pick myself up a Scott bonnar reel mower in pretty good nick for its ages. It says Mower 45 60074 on the mower itself. The engine says 2.5HP, Model 45, Model HK25, Spec No L1055. I am chasing a pull start mechanism and a muffler, everything else seems fine. Oh and all the linkages and springs for the carbie and governor were missing so a few pages from a manual on how to set that up would be great. I have looked on ebay for a manual but none of them list the HK25, just the H30. Any help would be appreciated.

I haven't personally seen a manual for those old Lauson/Tecumseh engines. They must exist, but might be rather scarce. Bruce is the person most likely to have access. I doubt there are any parts available except by taking them off another old HK25. Most of the governor parts look the same as those on the vertical crankshaft HK25, so you might try looking for an ancient rotary mower with a Tecumseh or Kirby-Lauson engine - they used to be very common in the 1960s.

hi gowie i have a parts brake - down list for Horizontal kirby 2 and 4 stroke engines if u had to u could make the solid link to the engine from the govnor arm also with right parts numbers u can still get rings and points though repco if u do pull the engine down and find it needs rings. on your id plate on the engine it should have points gap tappet clearence and spark plug info try this link for some usefull info


http://www.cpdonline.com/692509.pdf

regards steve...

Thanks for that link, Steve. It seems to start from a later generation of engines than the HK25 & 30, but it looks like a useful manual.

Hi gowie77, and a big warm welcome to the forum. It's great to have another Scotty Model 45 owner on board.
I hope we can help you with advice on any probs you may have, as we all love to learn new things and tinker here.
Once again,

gowie77, I suggest you take a look at this thread:
https://www.outdoorking-forum.com.au/forum/u...Words=governor&Search=true#Post14222

In that thread wazzbat posted some closeup pictures of the governor on his HK25. His governor spring is quite a bit past its use-by date but otherwise the pictures show you what the governor should look like.

Hi all. Thanks for that info, I looked a that thread and yes indeed it is the same motor. I will look into making some linkages and buying some springs etc. I managed to find a muffler and air filter on the outdoor kings website so its only a pull start mechanism that I require, in the meantime i will get it running and just start it with an pneumatic drill and a socket. Thank you...

gowie77, please don't use a socket wrench on the flywheel retaining nut to start the engine. You will make it very difficult to ever get the flywheel off, and you may even strip the thread on the end of the crankshaft.

hi all here is some picks of my kirby 3hp for a sb 45 20inch regards steve...

couple more of kirby 3 hp steve....

Thanks Steve, and congratulations on having governor spring and wire link both in perfect condition. I don't know how you achieved that. Is the engine an HK30?

hi grumpy and thank you for your kind comments yes it is a 3hp kirby which belongs to a sb/45 20inch im reconditioning attached is a close up of the id plate kind regards steve...

Considering I only paid $60 for the lawn mower I was pretty happy as mechanically it was in great condition, nothing some dulux cant fix. I headed down to our local rubbish dump recycle shop on the weekend and scored big time. I found an old edger with a HK25 kirby engine, pull start and all linkages intact and it was only $15.00. Thanks for your help, I have 2 engines now so will easily get her up and running in no time.

That sounds like the way to go - genuine parts, and no experimenting required. Plus a supply of future replacements. On the other hand, it might have been a nice vintage edger you are dismantling. Edgers that old are rare. Might be worth while just borrowing the bits you need, and keeping the edger for future restoration when you find some more bits.

Well said, grumpy, early edgers are hard to find, and do make an excellent restoration project...Yep, I would definately consider that option if I were you....borrow the parts and replace as you find newies...which are about, when you least expect to find 'em!