How To Start A Puch Moped
Puch Maxi - how to first?
Hi,
I've merely bought a Puch Maxi, its a Uk 2-speed automatic and it had been stored for 11 years.
I don't understanbd the starting procedure. I had to thoroughly clean out the carb and petrol tap but it doesn't start - I have a adept spark and petrol at the plug.
I have a string lever on the handlebars, the cable from this splits into ii at a plastic Y lever. It seems to operate the decompressor and starting mechanism.
If I pedal off and pull in the lever the engine turns but sounds as though it has feeble compresssion (presumably considering the decompressor is on) and doesn't fire. When I release the lever the moped merely reverts to freewheeling.
How the hell do I get it started? I tin can see that it volition ever start with the decompressor lever pulled in and withal as soon as I release it the the engine stops turning over and I merely coast........... Frustrating.
I'm loathe to adjust annihilation since I presume it was put abroad, 11 years ago, in working order.
Also I don't seem to take a RUN ande Kill switch, just one big black switch which appears to control lights and horn, I remember!
Any advice?
Thank you
Allan
Re: Puch Maxi - how to start?
What you're describing sounds weird...pictures might help.
There shouldn't be a decompression valve on a Puch. There should be a single cable running from the big black lever to your gearbox. That engages the clutch and lets the pedals turn the engine over. Turn the run switch (there should be 1) to run, turn the fuel valve on, pull the clutch lever and pedal. If everything is working properly, the engine should start (might accept some choke). If it doesn't, you have a trouble(s) somewhere that yous need to fix. Check out Fred's Guide in the Resource->Articles department.
Re: Puch Maxi - how to start?
Hi Matt,
Thanks for your reply.
I can't notice the exact manual for this model, its a 1979 Puch Maxi 2-speed automatic, but whatsoever standard Maxi manual mentions the decompressor.
I have the standard black starting lever with 1 cable, this goes down to a plastic Y device which branches into two cables, one to the decompressor and a short one to the top of the gearbox. When the starting lever is pulled the Y piece operates both cables simulataneously although they can be adjusted independently.
The manual actually states that the starting lever operates a decompressor and that it should come up into action before the starting device (clutch?).
Since I accept spark and petrol then I gues its either pinch or timing. The mileage is only 4679 so I wouldn't look massive habiliment just operating the decompressor would of form mean depression compression. I'k reluctant o alter the timimg yet since information technology belonged to one old lady and I'd probably brand it worse.
No apparent run/kill switch, I gauge its left downwardly to the decompressor.
Just one large black switch moilding. Information technology has iii switches ane large one with 2 positive positions plus a button position, one red button which operates the horn and then a pocket-size pointed switch on the inderside of the moulding which has ii positive positions plus it tin be pushed in. Again I can't find a film of a Maxi with a similar switch but everything seems original and untouched.
It seems to be quite a common trouble with the Maxi and 1 guy is selling his on ebay cos he just can't cure it, in that location have as well been post in the forum with the aforementioned problem.
Hopefully all will be revealed in the fullness of fourth dimension.
Thanks
Allan
Re: Puch Maxi - how to start?
Attempt adjusting the part of the cable that pulls the decompression and so that it does not pull it. The cycle volition be harder to start just it's the easiest fashion to figure out if that's the trouble.
Re: Puch Maxi - how to commencement?
Hi Matt,
That'southward a good point.
The other thing which occurs to me is that>
You pedal off with the starting lever pulled, this eases the pinch making it easier to pedal and operates the starting clutch then mayhap when you've reached a couple of mile an hour the centrifugal clutch should come into functioning then that the rear wheel is turning over the engine and you can release the starting lever therby allowing maximum pinch. Mine simply goes dorsum to freewheel.
This seems the logical method and as I remember is how some of the simple mopeds work, including my Velosolex. So I wonder if somehow the centrifugal clutch is stuck, mayhap through standing.
Any Maxi owners out there who can confirm this point?
Regards
Allan
Re: Puch Maxi - how to start?
i know that ped! pull the starting handle, then pedal while holding it until it starts....
--cb-
Re: Puch Maxi - how to start?
i take a ane spd 1.5 hp... i would need to see this ped though so i can come across the problem and help.. he should simply have to pull that lever and then pedal forward...
--cb-
Re: Puch Maxi - how to start?
Your reasoning is logical but this is not how the 2-speed Puch works. The first gear centrifugal clutch tin can merely come into play when the creepo shaft has reached an RPM which equates to several MPH. The 2nd gear centrifugal clutch weights are actuated when the rear wheel reaches a speed of around 15 MPH (depending on the sprocket sizes you lot have) Simply, the second gear clutch requires that the first gear clutch be engaged in order for it (second gear clutch) to appoint the wheel to the crank. It is kind of complex but really a very clever way to bargain with the problem of keeping the manual from shifting back and forth between 1st and 2nd at a certain engine speed.
Some Puch engines have a decompression valve but most don't. Information technology is non necessary, and tin crusade problems. I would suggest disconnecting the cablevision going to it. Mine starts fine without a decompressor and I have even raised the compression ratio quite significantly (11.one:1).
Re: Puch Maxi - how to start?
Thank you Greg,
Well, that's two votes for disconnecting the decompressor.
I'll probably leave it until tomorrow cos I'm whacked from pedalling today!
I have to acknowledge information technology goes against the grain to practice abroad with something that presumably worked when it was new and I won't rest like shooting fish in a barrel until I get to the bottom of it, simply for the moment I'll settle for just hearing a splutter from the engine.
I'll permit you know the event...............
Thank you Allan
Re: Puch Maxi - how to starting time?
Pause for thought...........
I then take to fit a kill switch cos should it fire up I've no decompressor to cease it!
Flaming mopeds, I have a Cyclemaster with a duff HT coil, a Trojan minimotor, early model without a decompressor or clutch, which makes riding unpredictable and a Velosolex which is fully operational just wouldn't pull the pare off a rice pudding! these are actually cyclemotors but very similar.
Allan
Re: Puch Maxi - how to start?
i would go a new spark plug (gap it at .018"), and just pull the lever like you unremarkably would. its a puch, itll fire. practice you have the air cleaner on?-jason
Re: Puch Maxi - how to start?
I don't know if your model has the same wiring as the Puch models that were imported into the U.S. but check to make certain the ii wires that become into the dorsum of the horn are connected. It was (is) a common trouble on sometime Puchs that the horn would buzz when starting and running. Make sure these wires take non been asunder.
Also use an Automotive Electric contact spray to clean the ground wires (brown?) anywhere they fasten to the frame. Too cheque the last wiring block by the engine area to make certain there are no loose or asunder wires.
If I recollect correctly either the Kreidler or Sachs Prima moped has a like setup with a combination clutch/decompression cable. If you disconnect the decompression cable, it will be much more hard to pedal commencement.
Re: Puch Maxi - how to get-go?
To stop it without a kill switch all you take to do is pull in the clutch lever, with the wheel on the ground and y'all sitting on the bike or with the rear brake applied.
Re: Puch Maxi - how to start?
Hi,
Got and so fed up last calendar week of beingness soaked in petroil and pedalling to no end that I haven't done annihilation further.
Yes, tried new plug and air filter on and off.
How it manages to outset still baffles me. Allow me put it frontwards again in instance I worded information technology badly.
I mountain the moped, petrol on, choke on, etc I pull in the get-go lever which engages the decompressor and engages the starter clutch and I pedal off, the engine is turning over and the back bike is being driven. I and then also open the throttle. Engine doesn't fire. I release the starter lever, the engine stops turning over and the back bicycle freewheels!
It defies me at what indicate the engine is supposed to fire. If I take the starter lever and hence the decompressor open it will never fire due to lack of compression. And all the same if I loose the starter lever everything stops turning over and so again the engine can't burn - am I missing something? I just can't run into at what betoken the engine has the opportunity to fire? Can anyone tell me how its supposed to start up cos I'one thousand baffled?
I'm not sure either about the quality of construction of the Puch, far likewise much plastic for my liking fifty-fifty a plastic throttle grip. Any other moped I've owned has always had a sturdy metallic twistgrip. Poor paint terminate, doesn't seem to be any primer glaze. Indifferent chrome plating. Possibly I'll feel differently once its fired!
Back to the Cyclemaster for a change..........
Regards
Allan
Re: Puch Maxi - how to showtime?
It'due south supposed to burn up exactly like you thought. Now, as for the decompression being engaged at the aforementioned time equally the clutch: if you lot pull the starter lever in and pedal hard, then let go, the engine should continue turning over for a menstruum of time. Since you've let get of the decompression cablevision at this point, information technology should accept pinch and still be turning over. If it'south withal non starting, go back to basics: spark, fuel, pinch, etc...
Re: Puch Maxi - how to first?
Cheers Matt,
It seems a bit hitting and miss since in that location is but a short period of time for it to, hopefully, burn and so.
All my other machines go along to turn over equally yous're pedalling and sometimes they require upward to 12 feet, I gauge, which represents quite a few revolutions.
Maybe I need to pay a chip more attention to the plug and points gaps. I tend to recollect that two-strokes are fairly tolerant but maybe I demand a bit more than precision on this one.
Thanks
Allan
Re: Puch Maxi - how to kickoff?
i dont think the decomp lever is the trouble at all. if your peddleing forever and its not firing, youre just soaking the plug, and itll never spark.-jason
Re: Puch Maxi - how to commencement?
How-do-you-do all,
LOL, LOL,
Guess what, yes, I've had it firing.
Simple really, just spark, petrol and compression to consider!
A play a trick on I read somewhere, could have been on this forum, put a teaspoonful of petrol into the plug hole. Terriffic, fired near instantly! but only for a few seconds, of course.
So now we know where the trouble lies. When I bought it the petcock (petrol tap) was blocked solid and the carb was bad as well. I though I'd cleaned them merely it expect as though there is still some blockage somewhere. I think probably a new petcock wouldn;t become amiss. Any advice on removing it. It doesn't want to come out. I can come across that there is a sparse tube going inside the tank, presumably the reserve pipage but there besides seems to exist a plastic washer or tube which stops me from pulling the petcock right out of the tank. Can I force this plastic tube out? I think this will release the head of the reserve pipe.
Great news though?
Many thanks
Allan
Re: Puch Maxi - how to start?
Allan,
This is what the petcock looks like for your Puch. Information technology should come out pretty easily but a little twist at the end. When I pulled my petcock out there was a chip of remanence of a seal. When yous put the valve dorsum on utilise some lock-tight effectually the threads. When you have the petcock out get a minor screw commuter out and check the lesser of your tank I found about a one/4 inch of rust flakes in my tank that had been clogging up my filter. Also I found that the threads on the nut that connect to the petcock thread backwards.
Good luck
- Chris
Re: Started simply petcock?
Thanks Chris,
I'll have some other go at removing it.
When it was unscrewed information technology would only come out of the tank by most 1". So I could see the small main supply pipe (non the reserve pipe as I called it previously) and I could rotate the tap in the tank but it seemed to exist firmly stock-still otherwise. So I saw the edge of a plastic sleeve but peering out of the tank and it seemed to exist this which was stopping the tap from coming right out.
I didn't desire to forcefulness information technology and take chances having the little pipe suspension off in the tank.
But out its got to come................
Cheers
allan
Re: Just what I didn'y want to happen!
More wasted hours and a bit of petcock broken off in the tank!
I managed to pull more of the petcock and the brass tube out, peradventure 2" only there was definitely something preventing the caput from coming out.
In that location was a plastic sleeve which came out only it was nearly equally though it had broken in two with one half however on the tube but inside the tank and this was holding it dorsum. I pulled, levered tried to break up this plastic tube although I have to admit the scrap inside seem like hard fibre.
Eventually the inevitable the brass tube broke leaving the sleeve and top of the brass tube stuck in the outlet. All I could practise was tap these dorsum into the tank. Not the end of the world because it will sink to the lesser of the tank simply annoying.
At present there must be some washers missing because when I spiral it all back together the outlet from the petcock is pointing skywards.
Call it a mean solar day for today, yet once more..........
Allan
Re: Merely what I didn'y want to happen!
I find it really foreign that the petcock is somehow attached to your tank. That's new to me. I can aid yous out with the outlet pointing skywards thought. Mainly you need to loosen the petcock out of the tank threads. Then tighten the nut onto the petcock a half turn. Since the nut connects the petcock to the tank and they share common threads this will let you lot to turn the petcock 1/two turn less when you are screwing dorsum onto the tank.
Ok... This fabricated sense in my head if information technology dose not make sense to yous allow me know Ill attempt try to find my digital camera.
- Chris
Re: Just what I didn'y want to happen!
The only fashion that you can remove the petcock or put it back on is to concur the petcock in its proper position, with respect to upwards and down, while y'all plough the nut. The nut is a special nut which has left paw threads on one stop and right hand threads on the other. It has to spiral onto the petcock at the same time it is screwing onto the tank plumbing equipment.
If you lot turn the entire petcock the brass tube attached to information technology will exist bent all well-nigh and destroyed.
And aye, there is a fiber or plastic washer (either will piece of work) between the petcock and the tank fitting.
Re: Just what I didn'y want to happen!
im sure it was allens own picayune moped sedimentary rock formation that kept the petcock from coming out all of the way. the same thing just happened to one of my other peds.-jason
Re: Just what I didn'y desire to happen!
Hi guys,
Thanks, yes been through this awkward correct/left spiral on simultaneously method - a bit of a pig's ear way of doing things!
Looking at a picture of an Italian petcock I encounter the plastic sleeve and the fibre collar. On mine the fibre seemed to have swollen and just wouldn't make information technology out.
I've been in touch with mopedwarehouse.com and I'm impressed with their efficiency - I'm yet waiting for a reply from a United kingdom visitor and quite bluntly we often go deliveries from the US faster than the UK so I'll exist placing an society for a new petcock which mopedwarehouse tell me comes complete with the new seal.
Regards
Allan
Re: Simply what I didn'y want to happen!
Well Allan,
While y'all wait for your new petcock ( I am waiting for a new 1 as well). You lot tin can nonetheless attempt to get your engine running without the petcock. Just fill up up the fuel line and let information technology drain into the carb float. With the float total yous tin can get most 2-3 blocks on that fuel. Thus you lot can diagnose whatsoever other issues with the bike.
- Chris
Re: Patience.........
Hi Guys,
Yes, I'll try filling the bladder sleeping accommodation. I think at that place is even so blockage in the carburettor then its got to come off over again. Anybody know of anything which will remove this one-time varnish like petroil?
Just posted the Puch page to my website http://freespace.virgin.net/stones.ukp/puch_maxi.htm if anyone wants to see what another mischievous max looks like. You tin also access my other pages on my Britain Cyclemaster, Trojan Minimotor and other unlikely modes of transportation and caravans!
Cheers
Allan
Re: Patience.........
Re: SORTED
While I was waiting for the new petcock I also saw one on ebay for nearly $five so I ordered this besides.
Fitted the petcock and pedalled anxiously ..........nothing. I still couldn't go any petrol into the carb. Only by feeding petrol into the float sleeping accommodation manually would information technology run. Took off the carb to give it another clean (hot soapy water didn't work) and I had to gently scrape some deposits off).
Replaced the carb still no good. I could only get petrol from the petcock if I shook the moped from side to side. Must be a really large blockage in the tank, I thought.
Right, the key is that I had just been putting modest amounts of petroil into the tank, mainly considering I ended upwardly emptying most of it.
Penny dropped, as soon as I put a decent amount of petrol in the tank the problem was solved.LOL,LOL. Petrol flowed from the petcock, the carb filled. Don't ovelook the obvious!
Now information technology goes extremely well, much better than I expected!
Thanks for your perseverance guys.
Allan
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