Lexmoto hunter 50 leaking oil

Lexmoto hunter 50 leaking oil

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Discussion

Shelly P

Original Poster:

2 posts

20 months

Wednesday 19th April 2023
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My son's bike is pouring out oil where the cog is. Any idea how to get it off to have a look behind ?. Thanks

Byronwww

397 posts

145 months

Wednesday 19th April 2023
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Lexmoto quality

Biker's Nemesis

39,581 posts

214 months

Wednesday 19th April 2023
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It'll be the oil seal that sits around the shaft, order a new one, prise out the seal very very carefully with a small screwdriver or screw a screw into it and pull it out.

Use a socket the same size as the outside diameter of the seal to gently tap the new one in.

5 minute job.

OutInTheShed

8,863 posts

32 months

Wednesday 19th April 2023
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Photo looks like there's bits of casing missing?

Oil seals generally last a long time. Often they fail because the bearing behind is failing.
Can be caused by too tight a chain.
A new seal is worth trying, if that's where the leak is.

Also check oil level etc.

Shelly P

Original Poster:

2 posts

20 months

Thursday 20th April 2023
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Chain was on too tight and knacked everything up. Oil gets poured in and come straight back out. It pools where what looks like the bits broken off?? I'm new to all this . Where is the oil seal?

Krikkit

26,922 posts

187 months

Thursday 20th April 2023
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Shelly P said:
Chain was on too tight and knacked everything up. Oil gets poured in and come straight back out. It pools where what looks like the bits broken off?? I'm new to all this . Where is the oil seal?
Oil seal is this black rubbery component between the casing and the output shaft:



If it's really pouring out it might not be that, but easy to see if you pop a bit more in.

AceOfHearts

5,842 posts

197 months

Thursday 20th April 2023
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Looks to me like the chain has snapped and smashed a hole in the casing at the 7 o clock position...

anonymous-user

60 months

Thursday 20th April 2023
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Lol. That will require a petty interesting seal.

stu67

836 posts

194 months

Thursday 20th April 2023
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Yep it looks like a very loose chain has jumped or snapped and holed the crankcase, mind you it looks fairly ropey further up? and almost looks like its been previously welded?

As it's a Lexmoto I'd probably say that you can weld repair that crankcase, it's not going to be made with anything fancy.

PS I'd get him to do it, teach him to look after his bike! smile

Biker's Nemesis

39,581 posts

214 months

Thursday 20th April 2023
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I knew I should not have replied, half a story and looking on my phone.

Oh well, I know how to diagnose and fix just about anything so I'll stick to looking after my own stuff.

carinaman

21,866 posts

178 months

Thursday 20th April 2023
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Biker's Nemesis said:
I knew I should not have replied, half a story and looking on my phone.

Oh well, I know how to diagnose and fix just about anything so I'll stick to looking after my own stuff.
I didn't spot the gaping hole and I was looking at the photo on a PC screen. Someone posted on PH and you tried to help. It's all good.

Byronwww

397 posts

145 months

Thursday 20th April 2023
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stu67 said:
Yep it looks like a very loose chain has jumped or snapped and holed the crankcase, mind you it looks fairly ropey further up? and almost looks like its been previously welded?

As it's a Lexmoto I'd probably say that you can weld repair that crankcase, it's not going to be made with anything fancy.

PS I'd get him to do it, teach him to look after his bike! smile
You'd have to find some chinesium alloy and a blind welder to do a proper job

RazerSauber

2,461 posts

66 months

Thursday 20th April 2023
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Yep, that's a hole there. Is your son able to ride a 125 yet? If he is, just get rid and buy a 125. Stay away from 2nd hand Lexmoto's, they're usually more trouble than they're worth. While build quality has come on leaps and bounds, it's only in the last 2-3 years and the people that buy them often abuse them. Plenty of quality 125's around with far longer longevity in them.

stu67

836 posts

194 months

Thursday 20th April 2023
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Byronwww said:
stu67 said:
Yep it looks like a very loose chain has jumped or snapped and holed the crankcase, mind you it looks fairly ropey further up? and almost looks like its been previously welded?

As it's a Lexmoto I'd probably say that you can weld repair that crankcase, it's not going to be made with anything fancy.

PS I'd get him to do it, teach him to look after his bike! smile
You'd have to find some chinesium alloy and a blind welder to do a proper job
You know if you really were cheap and wanted just to get it back on the road some of that metal repair putty might even work, I used it years ago on the bottom of a radiator that had pin holed and I was amazed it actually worked. Mind you that looks a bit bigger than a pin hole but maybe worth a try.

Byronwww

397 posts

145 months

Thursday 20th April 2023
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Stay away from any Chinese bikes - they have a lot of different brands (hanway, lexmoto, mutt, keeway, herald and more) mostly being churned out from the same factories with the same low quality parts which makes them dangerous because bits randomly break and worthless when it comes to reselling.

A 20 year old honda 125 thats been around the world a few times is a better deal than a new Chinese bike at the same price.

Byronwww

397 posts

145 months

Thursday 20th April 2023
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stu67 said:
Byronwww said:
stu67 said:
Yep it looks like a very loose chain has jumped or snapped and holed the crankcase, mind you it looks fairly ropey further up? and almost looks like its been previously welded?

As it's a Lexmoto I'd probably say that you can weld repair that crankcase, it's not going to be made with anything fancy.

PS I'd get him to do it, teach him to look after his bike! smile
You'd have to find some chinesium alloy and a blind welder to do a proper job
You know if you really were cheap and wanted just to get it back on the road some of that metal repair putty might even work, I used it years ago on the bottom of a radiator that had pin holed and I was amazed it actually worked. Mind you that looks a bit bigger than a pin hole but maybe worth a try.
That casing looks like it's got multiple big holes in it and a massive one at the bottom.


Edited by Byronwww on Thursday 20th April 12:40

Krikkit

26,922 posts

187 months

Thursday 20th April 2023
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Krikkit said:
Definitely should've had my coffee before doing this, bloody hell that's a big hole laugh

stu67

836 posts

194 months

Thursday 20th April 2023
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It's a 50 I'm sure it will run again. This has me remembering back to my 50cc days, blimey the state of some of me and my mates bikes were awful, we never had any money to spend on them.

OutInTheShed

8,863 posts

32 months

Thursday 20th April 2023
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You might repair a hole with epoxy.

You might get another engine, or set of cases from a breaker.
You might get a non running bike or a crashed bike and make one out of two.
Not knowing the models, I don't know what interchangeability there is.
You might break the one you've got and get something different.

It's easy to say 'avoid Chinese brands' but good Japanese bikes are either expensive or the owner isn't selling.
Lots of younger people are doing OK with Chinese bikes.

carinaman

21,866 posts

178 months

Thursday 20th April 2023
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I had a quick look on eBay for Hunter 50 engine cases. The parts were <£50 but neither seemed to be the part shown in the photo.

If it's been bodged before perhaps getting that part from a breaker may be a better long term fix.