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Joined: Nov 2025
Posts: 6
Novice
Hi guys, I bought a Stockman,25K96,0774 13 hp Honda a few weeks ago,It hadn't run in many years I gathered. I'm just running the spanners over it and will use it this wet season as the push has turned into a 2 day affair now.Changed the engine oil and it fired up and is running well,took it for a run up the driveway where upon it shuddered and clunked every now and then,I thought it may have been the drive chain rusted or the tensioner as something was grabbing and releasing, today I took that wheel off,chain doesn't have any tight spots so I'm thinking something in the diff is off,maybe no lube is present.So thought I'd ask here before opening that up.There's a valve release? which comes out through the rim,which I'm thinking may release oil as i can't see any plugs for topping up oil or draining it.Nothing came out.So is this a straight forward job?Any special tools needed.Hours on gauge is 537 and lights and the rest of the mower looks to be quite ok.
regards
Colin

Joined: Jan 2016
Posts: 8,137
Likes: 231
SENIOR TECHNICIAN
Hi Colin, long time no hear, don't know anything about your Stockman tranny but I do know a bit about the old Enfields

Joined: Nov 2025
Posts: 6
Novice
Hello there Norm,well well the circles have turned,it took me a minute to think who could this be,then it came back and i remember you and Ant got into the mowers..I've just gone through the parts book and it looks like this pin on the end of the axle is a diff lock so will have a look in the morning.Hey the old enfields are out of favor these days,mine are all parked up.

Joined: Jan 2016
Posts: 8,137
Likes: 231
SENIOR TECHNICIAN
Hi Colin,
Yep I haven't ridden my old Interceptor for probably 5 years now, Got home from a meeting one night and it took me a long time to be able to get off it. I figured then it was probably a good idea for me to stop riding
And yes I am still fixing Ants mowers as he still has little knowledge of anything mechanical. If you remember he started the Club all those years ago because he wanted somebody to fix his Enfield. Haven't fixed any of his bikes lately, but he always has a mower here needing repairs

Last edited by NormK; 14/11/25 08:09 PM.
Joined: Nov 2025
Posts: 6
Novice
Went around to the local Cox agent,he hadn't seen a Cox with that type of diff lock,he said that was only fitted to Greenfields(he had a couple of those new also along with 8 Cox's). It's a sealed unit.With that I got home and played around with that pin and when it's out wheel freely spun so probably no problem and I'll never have a need for diff lock as block is dead flat.

Joined: Jan 2016
Posts: 8,137
Likes: 231
SENIOR TECHNICIAN
Hi Colin,
Good to hear, I have only had one Greenie here that was fitted with a diff lock and I only clicked it in and out to make sure it was working. With the diff lock disengaged it makes turning them so much easier. Sounds like somebody has scavenged it from a Greenie. I have often wondered how the conversion would go on an earlier Greenie I built for Sheriff in the Club because he is having trouble turning his with both rear wheels driving. Anyway good to hear your drive is now working

Joined: Nov 2025
Posts: 6
Novice
I've included a pic of the diff,it appears it was optional back then,chain is worn out anyone known what size it is?how many links?Has anyone taken this diff apart,I want to check it for lube as it appears to have seals that are available in the parts book,colin

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Screen Shot 12-02-25 at 12.33 PM.PNG (160.8 KB, 28 downloads)
Joined: Nov 2025
Posts: 6
Novice
Just picked up the correct chain,only $45 so that was about half i was expecting.

Joined: Nov 2025
Posts: 6
Novice
Turns out it was the incorrect one.to narrow so back it went.No help here,can i delete ?

Joined: Feb 2025
Posts: 29
Likes: 3
Novice
Originally Posted by leslloyd
Turns out it was the incorrect one.to narrow so back it went.No help here,can i delete ?

G'day leslloyd,

Please don't contemplate deleting your post, actually, I don't think you can... although I could be wrong on that admission .

Having said that, I'm sure that there will be somebody here that will be able to assist you with your predicament...

Regards,

mice_elf


Always striving for a better lawn...
Joined: Jan 2015
Posts: 1,536
Likes: 24
AVB Offline
SENIOR TECHNICIAN
Well see if this one is closer.

#40 Roller Chain 1/2" x 5/16" 43 drive links. The other chain was probably a 3/16" version for the non differential models.

Stockman 231901

or

Stockman 231901 chain

IPL Manual Download

22-25I3-25E94-25K94-25H94-25C95-25K95-25K96.pdf

Take with a grain of salt as I am a few skips and a hop from the there.

Joined: Jan 2016
Posts: 8,137
Likes: 231
SENIOR TECHNICIAN
Hi Colin,
I'm surprised you got the wrong chain, I know you have been dealing with chains for a very long time (Only joking)


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