I have a Kirby Tecumseh engine which I think is a H25, Unfortunately I can’t find any engine numbers or model numbers.
I’m currently refurbing a Scott Bonner 33 and want to freshen up the Kirby motor, Can anyone help me out with which model it is so I can order the correct parts needed.
Parts needed:-
Engine gasket kit.
Bearing.
Front and rear engine seals.
Carby rebuild kit.
New muffler assembly.
Con rod.
Ring set.
Also can you still get the black rubber hose that I'm assuming is crank vent / breather tube?
Not sure about your parts availability, bearings and seals will be fine from any bearing shop. Gasket set should be ok but conrod might be an ask. The hose is available but dear at between $20-$30. I will find a link for you soon.
I have attached a Tecumseh parts identification broucher that lists models, part numbers and pictures, once you can identify the parts you need just do a google or eBay search on those numbers and see what comes up, the sad part is the parts will be available in the U.S and shipping will burn you if you need a few parts from different suppliers, if you desperately just need 1 or 2 parts you might bite the bullet and pay it but for a handfull of parts you would be better off waiting for another engine to pop up cheap and use it for parts. Gasket kits are cheap and not a problem to source, just make sure you measure the PTO seal as I believe some same models came with 2 different shaft sizes i.e 2 different seal sizes
Thank you Paul C and Bon Scott for the replys and also for the above information and help, will try my luck finding the required parts needed for my rebuild.
You’re on the right track thinking it’s a Tecumseh H25/HK25 style engine, as those Kirby-built units were commonly fitted to Scott Bonnar 33s in the 60s–70s, but without the exact model/spec number (usually stamped on the blower housing or a tag) it’s hard to guarantee exact part matches because there were multiple variations with different crank sizes, seals, and internals ; the good news is most service parts like gasket kits, seals, rings, and even bearings are still available or can be matched through generic suppliers, and items like the breather tube can still be sourced aftermarket, but for critical parts like the con rod or piston/rings you really want to confirm bore size and spec before ordering, as H25 variants differ slightly, so your best approach is to identify it visually against a parts manual or measure key components, then cross-reference—because with these engines, bearings and seals are easy, but getting the wrong internal parts can cause more trouble than it’s worth.
I have a Kirby Tecumseh engine which I think is a H25, Unfortunately I can’t find any engine numbers or model numbers.
I’m currently refurbing a Scott Bonner 33 and want to freshen up the Kirby motor, Can anyone help me out with which model it is so I can order the correct parts needed.
Parts needed:-
Engine gasket kit.
Bearing.
Front and rear engine seals.
Carby rebuild kit.
New muffler assembly.
Con rod.
Ring set.
Also can you still get the black rubber hose that I'm assuming is crank vent / breather tube?
I will attach some photos for reference.
Much appreciated Damo
Hi Damo S,
Below is the Scott Bonnar parts list which might help you when searching for parts on the internet.
Regards,
Bruce
Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.
You’re on the right track thinking it’s a Tecumseh H25/HK25 style engine, as those Kirby-built units were commonly fitted to Scott Bonnar 33s in the 60s–70s, but without the exact model/spec number (usually stamped on the blower housing or a tag) it’s hard to guarantee exact part matches because there were multiple variations with different crank sizes, seals, and internals ; the good news is most service parts like gasket kits, seals, rings, and even TBS bearings are still available or can be matched through generic suppliers, and items like the breather tube can still be sourced aftermarket, but for critical parts like the con rod or piston/rings you really want to confirm bore size and spec before ordering, as H25 variants differ slightly, so your best approach is to identify it visually against a parts manual or measure key components, then cross-reference—because with these engines, bearings and seals are easy, but getting the wrong internal parts can cause more trouble than it’s worth.
And without the exact model and spec numbers it’s important to be cautious because there were several variations with different crank sizes, seals, and internal components; while common service parts like gasket kits, seals, rings, and needle roller bearings are usually easy to source or match through generic suppliers, critical items like the con rod and piston need to be confirmed by measuring bore size and checking specs against a parts manual, since using incorrect components can lead to fitment issues or premature wear, so proper identification and cross-referencing is the safest approach.
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